Fancy Terms Glossary.

Artificial intelligence. Software that can draft, classify, summarize or assist with tasks from prompts and data. On Cupani pages, AI means practical shop tools and assistants—not a promise of autonomous decisions without human review. SI (Super Intelligence) is the newer U.S. government term for the same kind of technology.

Also: artificial intelligence

SI has two meanings at Cupani. Super Intelligence: the U.S. government's official term for AI since Executive Order 14434 (Sept 29, 2026). It covers the same technology as AI. Shop Intelligence: Cupani's name for putting that technology to work in your shop, so your systems, numbers and bots pull the right information, flag what matters and leave decisions to you.

Also: super intelligence, Super Intelligence

Source: Executive Order 14434 (White House)

AI + SI. Cupani's short profile quiz that reads your AI and SI comfort zone and points you to a lane. Not a certification.

Also: AI + SI, AI Skills Check

Cupani's brand name for putting AI and SI to work in an independent auto shop—systems, numbers and bots that surface the right information while people keep the decisions.

Also: Automotive Shop Intelligence

An AI assistant configured for shop work. Cupani demos are illustrative unless you connect a real bot yourself.

Also: bots

xAI's Grok-powered assistant product discussed in Cupani training and demos. Cupani demos do not create a live Grok Bot connection unless you set one up yourself.

Describes AI that can take multi-step actions toward a goal (not just answer one question). Cupani courses teach no-code agentic habits with human approval boundaries.

Also: agentic AI

In Cupani training, an agent is an AI setup that can carry out a scoped task or workflow. It still needs clear instructions, limits and human review.

An AI tool you chat with or assign work to—often called a bot. Assistants draft and suggest; they should not spend money or send customer messages without your approval.

The instructions or question you give an AI. Clear prompts with scope, context and constraints get more reliable results.

Also: prompts

The underlying AI system that generates answers (for example a chat model). Different models vary in speed, cost and capability.

Units of text an AI processes (input and output). Cupani stresses habits that keep token use efficient; cost still depends on your tools, plans and workload.

Also: tokens, token use, token usage

The background information an AI is given for a task. Right-sized context means enough detail to do the job without pasting secrets or irrelevant noise.

Also: right-sized context

A scheduled or repeatable AI-assisted job (for example a Monday morning report). Routines still need owner approval before they run for real.

Also: routines

A link between an AI assistant and another app or data source. Changing a connector is a risk decision, not a casual toggle.

Also: connectors

Connecting tools so data or actions flow between them (shop software, bots, reporting). Integrations need clear ownership and review.

Letting software repeat a process without redoing it by hand each time. Cupani pairs automation with human checkpoints for money, messages and customer-facing work.

A sequence of steps to complete shop work (intake, estimate, authorization, repair, invoice). AI can help inside a workflow; it should not skip approvals.

Also: workflows

How bots and instructions are nested (owner rules above day-to-day prompts). Clear hierarchy keeps draft-only assistants from overreaching.

Passing work from a bot or person to the next owner with enough notes to continue safely—without silent assumptions.

Also: handoffs

A limit on what an AI may do (for example draft-only, no spending, no customer email). Guardrails keep bots inside approved lanes.

Also: guardrails

When an AI invents facts that sound confident but are wrong. Always check important claims against shop records or a technician.

A stop where a human reviews AI output before anything is sent, saved or charged. Cupani demos label checkpoints so nothing goes live by accident.

Also: checkpoints

Customer or owner approval to do the work (or for a bot to take an action). Added work without authorization is a shop risk.

Also: customer authorization, auth

A clear yes from a person before an AI or process takes an external action—sending mail, spending money or changing records.

Also: approvals

Keeping customer and shop information from being pasted into tools that should not see it. Redact secrets; do not put passwords or one-time codes in normal prompts.

Also: privacy

A short login or reset code used once. Never paste one-time codes, passwords or card numbers into a normal AI prompt or course simulation.

Also: one-time codes, OTP

A human check that helps block bots from forms. Cupani's contact form uses hCaptcha; training login uses Cloudflare Turnstile.

Also: hCaptcha, human check, Turnstile

Cloudflare's human-verification check used on Cupani learner sign-in. Login fails closed if the check is missing.

Digital vehicle inspection. A tech's multipoint inspection with notes, measurements and photos so an advisor can review findings with the customer.

Also: digital vehicle inspection

A structured check of many vehicle systems (brakes, tires, fluids, belts and more), often captured in a DVI.

Also: multipoint

Repair order. The shop document for a visit: concern, jobs, labor, parts, fees, tax and authorization status.

Also: repair order, repair orders

A priced proposal of recommended work on an RO before the customer authorizes it. Sample prices in demos are labeled Sample.

Also: estimates

Vehicle identification number. The unique serial used to confirm parts fitment.

Also: vehicle identification number

Tests and inspection used to find the cause of a concern before recommending repair.

A third-party shop management system many shops use for ROs and estimates. Cupani demos may show a Tekmetric-style draft for teaching; they are not Tekmetric and do not create live Tekmetric records.

Cupani's shop-security concept: eyes on the shop and bays when you or a manager can't be there.

Also: Sentry

Authored practice scenarios in Cupani courses. No live AI model is called; nothing connects to Grok, Claude or other services.

Also: simulations, sims

The scoring checklist for a practice or assessment answer—what “good” looks like.

A final project or self-review near the end of a course, before or alongside the final assessment.

Cupani's record that you completed a course edition. It is not an accreditation, license or vendor certification.

Also: certificates

Permission for a learner account to open a specific course. Without an entitlement, the course stays locked.

Also: entitlements

The version of a course (for example 1.1). Progress and certificates are tied to the edition you studied.

Also: course edition

How many vehicles (usually counted as paid repair orders) the shop served in a period. It measures volume, not profit.

Formula Car count = number of qualifying repair orders closed in the period

Example Example: 22 paid ROs closed each week for 4 weeks = a monthly car count of 88.

Notes Shops count differently: some count every RO, some skip $0 ROs, warranty-only ROs or quick oil changes. Pick one rule, write it down and keep it.

Also: vehicle count

Average repair order. The average amount a customer pays per visit.

Formula ARO = total sales on qualifying ROs ÷ number of qualifying ROs

Example Example: $50,000 in sales across 200 ROs = an ARO of $250.

Notes Decide whether sales include or exclude sales tax, tire fees and $0 ROs. Most shops leave tax out. A change in the counting rule can move ARO without any real change in the business.

Also: average repair order, average RO, average ticket

The average number of labor hours sold on each repair order. It shows how much work each car brings in.

Formula Hours per RO = billed (sold) labor hours ÷ number of ROs

Example Example: 120 billed hours on 60 ROs = 2.0 hours per RO.

Notes A drop can mean more quick services in the mix, not worse selling. Read it next to car count and ARO.

Also: hours per repair order, H/RO, billed hours per RO

How much of the work your advisors recommend that customers actually approve.

Formula Close ratio % (by dollars) = approved work $ ÷ presented (estimated) work $ × 100

Example Example: $40,000 of work presented and $24,000 approved = a 60% close ratio by dollars.

Notes Shops measure this three ways: by dollars, by number of jobs (line items) or by number of ROs with any approval. They give different answers, so name which one you use. Declined safety work should still be recorded for follow-up.

Also: closing ratio, closing rate, close rate, approval rate

The hourly price your shop sets for technician labor, as shown on estimates. Your rate on paper.

Formula Labor charge on a job = billed hours × posted labor rate

Example Example: a 2.0-hour job at a $150 posted rate = $300 of labor.

Notes Some shops post different rates for different work (diagnostic, electrical, heavy line, fleet). What you actually collect per hour is the effective labor rate, which is usually lower.

Also: labor rate, door rate, posted rate, shop labor rate

What you actually collected for each labor hour you sold, after discounts, menu pricing, warranty and no-charge work. Your rate in real life.

Formula Effective labor rate = total labor sales $ ÷ total billed (sold) labor hours (same period)

Example Example: $60,000 in labor sales ÷ 500 billed hours = a $120 effective labor rate. If the posted rate is $150, the shop is collecting 80% of it.

Notes Use labor sales only (no parts, sublet, fees or tax). Some reports divide by clocked hours instead, which gives a lower number and answers a different question. Label which hours you used.

Also: ELR, effective rate

The labor hours charged to customers on repair orders, usually from a labor guide (book time). A technician can bill more or fewer hours than they actually spent.

Formula Billed hours = sum of labor hours on closed ROs in the period

Example Example: a brake job pays 2.0 hours by the guide. The tech finishes in 1.5 hours. Billed hours = 2.0; clocked hours = 1.5.

Notes Decide whether internal, warranty and comeback work count. Many shops track customer-pay billed hours separately.

Also: sold hours, flagged hours, flag hours, hours sold, hours produced

The time a technician was actually clocked onto repair jobs.

Formula Clocked hours = sum of time punched in on ROs

Example Example: a technician is punched in on jobs for 34 hours in a 40-hour week. Clocked (worked) hours = 34.

Notes Some shops use “clock hours” to mean all time at work (attendance), not just time on jobs. That changes every ratio built on it, so define it in writing.

Also: actual hours, worked hours, hours worked

The hours a technician was at work and available to do repairs (usually the hours they were paid for while present).

Formula Available hours = scheduled or paid hours present at work (leave out paid time off)

Example Example: a technician works a 40-hour week with no time off. Available hours = 40.

Notes Include overtime if it was worked. Do not mix one person's available hours with the whole team's billed hours.

Also: paid hours, attendance hours, hours available, scheduled hours

Paid technician time that never reached a customer invoice: waiting for parts, rework, unpaid diagnosis, cleanup, moving cars.

Formula Unbilled hours = available (paid) hours − billed hours (when billed is lower)

Example Example: 40 paid hours and 30 billed hours = 10 unbilled hours that week.

Notes Some unbilled time is normal (meetings, training, shop upkeep). Track the reasons so you can fix the avoidable ones.

Also: lost hours, unsold hours

How much of a technician's available time was spent working on jobs. It mostly reflects how the shop feeds work to the tech (dispatch, parts, approvals).

Formula Most common: Productivity % = clocked (worked) hours ÷ available hours × 100

Example Example: 34 clocked hours ÷ 40 available hours = 85% productivity.

Notes Definitions are NOT uniform in the industry. Many sources use worked ÷ available (above). Others define productivity as billed hours ÷ clocked hours or billed hours ÷ paid hours, and some call worked ÷ available “utilization.” Before comparing your number with another shop, a coach or a software report, check which formula it uses.

Also: productivity, tech productivity, utilization

How the time a technician actually spent compares to the time sold for those jobs. Above 100% means they beat the labor guide.

Formula Most common: Efficiency % = billed hours ÷ clocked (worked) hours × 100

Example Example: 40 billed hours ÷ 34 clocked hours ≈ 118% efficiency.

Notes Efficiency is the measure most tied to the technician (skill, tools, familiarity). Some sources and software swap the names of efficiency and productivity, or divide by attendance hours instead of job hours. Check the formula before you judge anyone by it. None of these numbers measures repair quality.

Also: efficiency, tech efficiency

The combined result: hours sold compared to hours the technician was available. It blends productivity and efficiency.

Formula Most common: Proficiency % = billed hours ÷ available hours × 100 (= productivity × efficiency, as decimals)

Example Example: 40 billed hours ÷ 40 available hours = 100% proficiency. Check: 0.85 productivity × 1.18 efficiency ≈ 1.00.

Notes Not every shop or software uses the word proficiency; some call this number “productivity” or “overall efficiency.” Proficiency alone cannot tell you whether a low number is a scheduling problem or a skill problem, so read all three together.

Also: proficiency, overall efficiency, tech proficiency

How often a car returns because the earlier repair did not fix the problem or was done incorrectly.

Formula Comeback rate % = comeback ROs ÷ total ROs in the period × 100

Example Example: 4 comebacks out of 400 ROs = a 1% comeback rate.

Notes Shops differ on what counts (customer-caused issues, failed parts under warranty, misdiagnosis). Track the cost too: unpaid labor hours, replacement parts and lost customer trust.

Also: comeback, comebacks, redo rate, rework rate

How many parts dollars you sell for each labor dollar. It shows your sales mix.

Formula Parts-to-labor ratio = parts sales $ ÷ labor sales $

Example Example: $50,000 parts sales ÷ $60,000 labor sales ≈ 0.83 (about 83¢ of parts per $1 of labor).

Notes Some people state it the other way around (labor ÷ parts) or as each category's share of total sales. Say which version you mean.

Also: parts to labor ratio, parts/labor ratio

How much gross profit the shop makes for each labor hour it sells, counting parts and labor together.

Formula GP per hour = total gross profit $ ÷ billed hours

Example Example: $64,000 total gross profit ÷ 500 billed hours = $128 of gross profit per billed hour.

Notes Useful because it combines pricing, parts margin and labor cost into one number tied to your capacity. Some versions use labor-only GP or clocked hours. Use one version consistently.

Also: GP per hour, gross profit per billed hour, GPPH

The total technician hours your shop could sell in a period with the people and bays you have.

Formula Billable capacity ≈ total available tech hours × proficiency

Example Example: 4 techs × 160 available hours = 640 available hours. At 90% proficiency, about 576 hours could be billed.

Notes Capacity planning is an estimate. Bays, lifts, parts delivery and advisor time can limit you before technician hours do.

Also: shop capacity, hour capacity

The standard number of hours a published labor guide says a job takes. Many shops price labor from it.

Formula Labor charge = book time × labor rate

Example Example: a guide lists 1.8 hours for a job; at $150 per hour the labor charge is $270.

Notes Guides differ by publisher and job conditions (rust, prior repairs). Shops may adjust time with notes on the RO.

Also: labor guide, labor time guide, flat-rate time

Your shop's pricing rules for parts: a table that sets the selling price from the part's cost, usually with a higher markup on cheaper parts and a lower markup on expensive ones.

Formula Selling price = part cost × the multiplier for that cost range

Example Example: a matrix row says parts costing $0–$10 are multiplied by 2.5, so an $8 filter sells for $20.

Notes Matrix numbers are your business decision; Cupani does not publish an ideal matrix. Review it when supplier costs change, and check that overrides and discounts are not quietly undoing it.

Also: matrix, parts pricing matrix, price matrix

Recommended repairs the customer chose not to approve today. A follow-up list, not lost forever.

Formula Declined work $ = presented work $ − approved work $

Example Example: $40,000 presented − $24,000 approved = $16,000 declined.

Notes Record what was declined and why, especially safety items, and follow up with the customer.

Also: deferred work, declined services, declined jobs

How much labor revenue each technician's work brought in during a period.

Formula Labor sales per tech = labor sales $ ÷ number of techs (or the labor sales on one named tech's jobs)

Example Example: $60,000 labor sales ÷ 4 techs = $15,000 per technician for the month.

Notes Compare people on similar work. Diagnostic specialists and lube techs will look very different for good reasons.

Also: sales per tech, labor dollars per tech

Key performance indicator. One of the few numbers you watch regularly to know if the shop is on track (for example car count, ARO, effective labor rate, gross profit %).

Example Example: an owner tracks five KPIs weekly: car count, ARO, effective labor rate, parts margin and comeback rate.

Notes Pick a short list, define each one in writing (exact formula and data source) and compare to your own past results and plan. Avoid copying ‘industry targets’ without knowing where they came from and what formula they used.

Also: KPIs, key performance indicator, key performance indicators

Small consumables used on jobs (rags, cleaners, small hardware, lubricants). Some shops charge a separate shop supplies line on the RO to recover this cost.

Formula Shop supplies GP = shop supplies charged $ − shop supplies cost $

Example Example: $1,500 of shop supply charges and $1,000 of supply purchases = $500 gross profit on supplies.

Notes Whether and how you may charge a shop supplies fee, how it must be shown on the invoice, and whether it is taxable depend on state and local rules. Rules vary by state and locality and can change. Confirm how this applies to your shop with your CPA or tax adviser.

Also: shop supplies fee, shop supply fee, shop supply charge

Work you send to another business (for example a machine shop, glass company or alignment shop) and bill to your customer on your RO.

Formula Sublet gross profit = sublet sales $ − sublet cost $

Example Example: you pay a glass company $300 and bill the customer $375, so sublet gross profit is $75.

Notes Keep sublet sales and sublet cost on their own lines so they do not hide inside labor or parts.

Also: sublet work, sublet repair, sublets

Return on investment. How much you gained compared to what you spent on something (equipment, training, marketing, software).

Formula ROI % = (gain from the investment − cost of the investment) ÷ cost of the investment × 100

Example Example: you spend $10,000 on new equipment and it adds $14,000 of gross profit in a year: ($14,000 − $10,000) ÷ $10,000 = 40% first-year ROI.

Notes Use gross profit or cash gained, not sales. ROI projections are estimates, not guarantees.

Also: return on investment

The share of customers from an earlier period who came back.

Formula Retention % = customers from period A who returned in period B ÷ customers in period A × 100

Example Example: 1,000 customers last year, 550 of whom returned this year = 55% retention.

Notes Definitions and time windows vary (12 months, 18 months). Fleet and one-time customers can skew it.

Also: retention rate, returning customer rate

How much you spent on advertising for each new customer it brought in.

Formula Cost per new customer = advertising spend $ ÷ new customers in the period

Example Example: $3,000 of ads and 30 new customers = $100 per new customer.

Notes Attribution is imperfect. Ask new customers how they found you and compare month to month.

Also: cost per new customer, customer acquisition cost, CAC

Profit and loss statement (also called the income statement). It shows money earned (sales) and money spent (costs and expenses) over a period, ending in profit or loss.

Formula Net profit = sales − cost of goods sold − operating expenses ± other income and expenses (− income tax, where the business itself pays it)

Example Example: $127,000 sales − $63,000 COGS − $55,000 operating expenses = $9,000 net operating profit for the month.

Notes A P&L covers a period (a month, quarter or year). It does not show cash in the bank; that is the balance sheet and cash flow statement.

Also: profit and loss, profit & loss, profit and loss statement, income statement, PNL, P and L

A snapshot of what the business owns (assets), what it owes (liabilities) and what is left for the owners (equity) on one date.

Formula Assets = liabilities + equity

Example Example: $300,000 assets = $180,000 liabilities + $120,000 equity.

Notes If the two sides do not match, something is posted wrong. The balance sheet is a single date, so always read the date shown.

Also: statement of financial position

A report of cash coming in and going out over a period, split into operating, investing and financing activities.

Formula Net change in cash = cash from operating + cash from investing + cash from financing

Example Example: +$12,000 operating − $20,000 equipment purchase (investing) + $15,000 loan received (financing) = +$7,000 net change in cash.

Notes Profit and cash are different. Buying equipment, paying down a loan or customers paying late all change cash without changing profit the same way.

Also: statement of cash flows

The movement of money into and out of the business. Positive cash flow means more came in than went out in that period.

Formula Cash flow for a period = cash received − cash paid out

Example Example: $110,000 collected and $104,000 paid out in a month = +$6,000 cash flow.

Notes A profitable shop can still run short of cash (slow-paying fleet accounts, large parts orders, loan payments, owner draws).

Also: cashflow

All sales billed to customers in a period before discounts, returns and allowances, usually not including sales tax collected.

Formula Gross sales = labor sales + parts sales + tire sales + sublet sales + fee and supply sales

Example Example: $60,000 labor + $50,000 parts + $10,000 tires + $5,000 sublet + $2,000 fees = $127,000 gross sales.

Notes Sales tax collected is owed to the state, so most shops keep it out of sales. Government fees you collect (like many state tire fees) are usually kept out for the same reason.

Also: total sales, top line

All income the business earned in a period before any costs are subtracted. In many small shops it is used to mean the same thing as gross sales.

Formula Gross revenue = gross sales + other operating income (when the business has any)

Example Example: $127,000 gross sales + $500 of vendor program income = $127,500 gross revenue.

Notes People use “gross sales,” “gross revenue” and “total revenue” loosely. On your P&L, label each line clearly and keep non-operating income (like interest) under Other income.

Also: total revenue, revenue

Sales after subtracting discounts, returns and allowances.

Formula Net sales = gross sales − discounts − returns and allowances

Example Example: $100,000 gross sales − $2,000 discounts = $98,000 net sales.

Notes Some systems record discounts as their own line; others reduce the sales line directly. Showing them separately makes discounting visible.

Also: net revenue

Money taken off the regular price (coupons, loyalty, fleet pricing, goodwill adjustments).

Formula Discount % = total discounts $ ÷ gross sales $ × 100

Example Example: $2,000 discounts ÷ $100,000 gross sales = 2% of sales.

Notes Track discounts by category (labor vs. parts) and reason. Labor discounts lower your effective labor rate.

Also: discount, allowances, price adjustments

Money billed for technician labor (including diagnosis), before parts and tax.

Formula Labor sales = billed hours × effective labor rate

Example Example: 500 billed hours × $120 effective rate = $60,000 labor sales.

Notes Keep diagnostic, warranty-reimbursed and internal labor clearly labeled so labor reports are comparable.

Also: labor revenue, labor income

Money billed for parts installed or sold, before tax.

Example Example: 400 ROs averaging $125 of parts = $50,000 parts sales.

Notes Many shop P&Ls split tires out of parts so tire margins can be seen on their own.

Also: parts revenue

Money billed for tires, usually tracked separately from other parts because tire margins behave differently.

Example Example: 50 tires sold at an average $200 = $10,000 tire sales (not counting any state tire fee collected).

Notes Mount, balance and disposal charges may be labor or fees depending on how your system is set up. Keep it consistent.

Also: tire revenue

Charges such as shop supplies or environmental fees that the shop bills and keeps (not fees collected for a government).

Example Example: $1,500 shop supplies + $500 environmental fees = $2,000 fee and supply sales.

Notes Government fees you collect and pass on (like many state tire fees) are usually liabilities, not your sales. Rules vary by state and locality and can change. Confirm how this applies to your shop with your CPA or tax adviser.

Also: fee income, shop fees

Cost of goods sold. The direct cost of what you sold: parts, tires and sublet you bought for jobs, and (in most shop formats) technician labor cost.

Formula COGS = labor COGS + parts COGS + tire COGS + sublet COGS (+ supplies, if you treat them as direct)

Example Example: $24,000 labor COGS + $27,500 parts + $7,500 tires + $4,000 sublet = $63,000 COGS.

Notes Formats differ: some shops put technician pay in COGS, others put it under operating expenses. Putting it in COGS lets you see labor gross profit. Agree on one approach with your CPA and keep it every month.

Also: cost of goods sold, cost of sales, direct costs

The cost of the technician labor you sold: tech wages and, in many formats, the payroll taxes and benefits tied to those wages.

Formula Labor COGS = technician wages (+ payroll taxes and benefits on those wages, if included)

Example Example: $20,000 tech wages + $4,000 tech payroll taxes and benefits = $24,000 labor COGS.

Notes Formats differ on whether payroll taxes, benefits, shop-foreman pay or unbilled time belong here. Service advisor pay is usually an operating expense, though some formats treat it as a cost of sales. Choose one definition and keep it.

Also: labor cost of sales, cost of labor, technician labor cost

What you paid suppliers for the parts you sold, after supplier credits and returns.

Formula Parts COGS = beginning inventory + purchases − returns and credits − ending inventory

Example Example: $25,000 beginning inventory + $28,000 purchases − $500 credits − $25,000 ending inventory = $27,500 parts COGS.

Notes Unreturned cores, uncredited returns and parts used on comebacks can quietly inflate this number.

Also: parts cost, cost of parts, parts cost of sales

What you paid for the tires you sold.

Example Example: 50 tires at a $150 average cost = $7,500 tire COGS.

Also: tire cost

What you paid outside vendors for sublet work billed on your ROs.

Example Example: $4,000 paid to a machine shop and a glass company for jobs billed this month.

Also: sublet cost

Sales minus the direct cost of what you sold (COGS). The money left to pay rent, staff, insurance, the owner and profit.

Formula Gross profit $ = net sales − COGS

Example Example: $127,000 sales − $63,000 COGS = $64,000 gross profit.

Notes Gross profit pays for overhead. You can have high sales and still lose money if gross profit is too thin.

Also: GP, gross profit dollars, GP $

Gross profit as a percentage of sales. How many cents of each sales dollar are left after direct costs.

Formula Gross profit margin % = (sales − COGS) ÷ sales × 100

Example Example: ($127,000 − $63,000) ÷ $127,000 ≈ 50.4% gross profit margin.

Notes Total GP % depends on your sales mix. Read it by category (labor, parts, tires, sublet) too.

Also: gross margin, GP %, gross profit percentage, gross profit %

Labor sales minus labor COGS, in dollars and as a percentage of labor sales.

Formula Labor GP % = (labor sales − labor COGS) ÷ labor sales × 100

Example Example: ($60,000 − $24,000) ÷ $60,000 = 60% labor gross profit ($36,000).

Notes Changes in what you include in labor COGS (for example adding payroll taxes) change this percentage. Compare like with like.

Also: labor GP, labor margin, labor gross margin, labor GP %

Parts sales minus parts COGS, in dollars and as a percentage of parts sales.

Formula Parts margin % = (parts sales − parts COGS) ÷ parts sales × 100

Example Example: ($50,000 − $27,500) ÷ $50,000 = 45% parts margin ($22,500).

Notes Parts margin is a margin, not a markup: a 100% markup is a 50% margin. Unbilled parts, comebacks and matrix overrides pull it down.

Also: parts GP, parts margin, parts gross margin, parts GP %

Tire sales minus tire COGS.

Formula Tire GP % = (tire sales − tire COGS) ÷ tire sales × 100

Example Example: ($10,000 − $7,500) ÷ $10,000 = 25% tire gross profit ($2,500).

Notes Tracking tires separately keeps lower tire margins from hiding a parts-pricing problem (or the reverse).

Also: tire GP, tire margin

Sublet sales minus sublet cost.

Formula Sublet GP % = (sublet sales − sublet COGS) ÷ sublet sales × 100

Example Example: ($5,000 − $4,000) ÷ $5,000 = 20% sublet gross profit ($1,000).

Also: sublet GP, sublet margin

How much you add on top of cost, measured as a percentage of cost.

Formula Markup % = (selling price − cost) ÷ cost × 100. Price = cost × (1 + markup)

Example Example: a part costs $100 and sells for $160: ($160 − $100) ÷ $100 = 60% markup.

Notes Markup and margin are different numbers for the same sale. Mixing them up is one of the most common pricing mistakes.

Also: mark-up, markup %

How much of the selling price is profit, measured as a percentage of the selling price.

Formula Margin % = (selling price − cost) ÷ selling price × 100. Price = cost ÷ (1 − margin)

Example Example: the same $100 part sold for $160: ($160 − $100) ÷ $160 = 37.5% margin.

Notes To hit a target margin, divide cost by (1 − margin). For a 50% margin on a $100 part: $100 ÷ 0.50 = $200.

Also: profit margin, margin %

Markup is measured against cost; margin is measured against the selling price. For the same sale, the markup % is always bigger than the margin %.

Formula Margin = markup ÷ (1 + markup). Markup = margin ÷ (1 − margin) (as decimals)

Example Example: 100% markup → 1.00 ÷ 2.00 = 50% margin. 50% margin → 0.50 ÷ 0.50 = 100% markup. 25% markup → 0.25 ÷ 1.25 = 20% margin.

Notes Ask “percent of what?” any time someone quotes a parts percentage.

Also: markup versus margin, margin vs markup

What is left from sales after variable costs, available to cover fixed costs and profit.

Formula Contribution margin $ = sales − variable costs. Contribution margin ratio = contribution margin ÷ sales

Example Example: $100,000 sales − $50,000 variable costs = $50,000 contribution margin, a 0.50 (50%) ratio.

Notes In many shops, gross profit is used as a close stand-in for contribution margin. If tech pay is a fixed salary, it behaves more like a fixed cost.

Also: contribution

The sales level where the shop covers all costs and makes zero profit. Below it you lose money; above it you make money.

Formula Breakeven sales $ = fixed expenses ÷ contribution margin ratio (shop shortcut: ÷ gross profit %)

Example Example: $50,000 monthly fixed expenses ÷ 0.50 = $100,000 of monthly sales to break even.

Notes If you use gross profit % as the shortcut, make sure variable costs that are not in COGS (card fees, commissions) are counted somewhere. Recalculate when rent, payroll or margin changes.

Also: break-even, breakeven, break even, breakeven sales

Costs that stay about the same each month no matter how many cars you fix: rent, insurance, salaried staff, loan payments, software subscriptions.

Formula Monthly fixed expenses = sum of costs that do not change with sales volume

Example Example: $12,000 rent + $3,000 insurance + $20,000 salaried staff + $2,000 software and phones + $13,000 other = $50,000 fixed expenses.

Notes Fixed costs can still change (a rent increase); they just do not move with each RO. Spread annual bills monthly (÷ 12) for planning.

Also: fixed costs, fixed expense

Costs that rise and fall with sales volume: parts, tires, sublet, card processing fees, commissions, shop supplies.

Formula Variable cost ratio = variable costs ÷ sales

Example Example: $50,000 of variable costs on $100,000 sales = a 0.50 ratio.

Also: variable costs, variable expense

Costs with a fixed part and a variable part, like utilities (base charge plus usage) or hourly tech pay with overtime.

Formula Semi-variable cost = fixed portion + (variable rate × activity)

Example Example: a $200 utility base charge + $0.15 per kWh used.

Notes For breakeven work, split these into their fixed and variable parts when you can.

Also: mixed costs, semi-fixed costs, semi-variable costs

The costs of keeping the doors open that are not tied to a specific job: rent, office staff, insurance, utilities, software. In most shop P&Ls this is the same as operating expenses.

Formula Overhead % = overhead $ ÷ sales $ × 100

Example Example: $55,000 overhead ÷ $127,000 sales ≈ 43.3%.

Also: overhead costs, indirect costs

Costs of running the business that are not part of COGS: advisor and office wages, rent, utilities, insurance, advertising, software, the owner's management pay.

Formula Operating expenses = fixed operating expenses + variable operating expenses

Example Example: $50,000 fixed + $5,000 variable (card fees, supplies not in COGS) = $55,000 operating expenses.

Notes Grouping them into fixed and variable makes breakeven and budgeting much easier.

Also: opex, OPEX, operating expense, SG&A

Money spent to attract and keep customers: online ads, website, mailers, signs, sponsorships, reminder services.

Formula Advertising % of sales = advertising $ ÷ sales $ × 100

Example Example: $3,000 advertising ÷ $127,000 sales ≈ 2.4% of sales.

Notes Keep advertising in its own account (not mixed into office or software) so you can judge whether it pays off.

Also: advertising, marketing expense, marketing expenses, advertising expense

What employees earn before deductions, plus the employer's share of payroll taxes and benefits.

Formula Total payroll cost = gross wages + employer payroll taxes + benefits

Example Example: $40,000 gross wages + $4,000 employer payroll taxes + $3,000 benefits = $47,000 payroll cost.

Notes On a shop P&L, split technician pay (labor COGS) from advisor, office and management pay (operating expenses).

Also: wages, salaries and wages, gross payroll

Profit from running the shop: gross profit minus operating expenses, before other income, other expenses and income taxes.

Formula Net operating profit = gross profit − operating expenses. Operating margin % = operating profit ÷ net sales × 100

Example Example: $64,000 gross profit − $55,000 operating expenses = $9,000 net operating profit (≈ 7.1% of $127,000 sales).

Notes Some formats include loan interest in operating expenses. Keeping it below the operating line makes shops with different loans easier to compare.

Also: operating profit, operating income, income from operations, NOP

Money in or out that is not from fixing cars: interest earned or paid, gains or losses from selling equipment, one-time items.

Formula Net profit before tax = net operating profit + other income − other expenses

Example Example: $9,000 operating profit + $100 interest earned − $1,100 loan interest = $8,000.

Also: other income, other expenses, non-operating income, non-operating expenses

What is left after every cost and expense. The literal bottom line of the P&L.

Formula Net profit = net operating profit + other income − other expenses (− income taxes, if the business pays them)

Example Example: $9,000 operating profit + $100 other income − $1,100 interest = $8,000 net profit (before any business-level income tax).

Notes Many small shops are pass-through entities, so income tax is paid on the owner's return, not shown on the shop's P&L. Ask your CPA which applies to you.

Also: net income, bottom line, net earnings, net profit before tax

Net profit as a percentage of sales.

Formula Net profit margin % = net profit ÷ net sales × 100

Example Example: $8,000 ÷ $127,000 ≈ 6.3% net profit margin.

Notes If the owner's pay is not on the P&L, net profit looks higher than it really is.

Also: net margin, net profit %, net profit percentage

Earnings before interest, taxes, depreciation and amortization. A rough measure of operating earnings often used when valuing, buying or selling a business.

Formula EBITDA = net profit + interest + income taxes + depreciation + amortization

Example Example: $8,000 net profit + $1,100 interest + $0 tax + $1,500 depreciation + $0 amortization = $10,600 EBITDA.

Notes Buyers and lenders often ‘adjust’ EBITDA (for example adding back one-time costs or normalizing owner pay). Ask exactly which adjustments were made. EBITDA is not cash flow: it ignores equipment purchases and loan principal.

Also: earnings before interest taxes depreciation and amortization

What the owner is paid for working in the business, as wages or another set payment for their work. Different from a share of profit.

Example Example: an owner who runs the shop full time is paid $6,000 a month in wages, shown as an operating expense.

Notes For decisions, many advisers suggest the P&L show a fair wage for the owner's job so profit is not overstated. How you may pay yourself depends on your entity type; for example, the IRS says S corporations must pay shareholder-employees reasonable compensation before non-wage distributions. Set this up with your CPA.

Also: owner compensation, owner's comp, owner pay, owner salary, officer compensation

Money the owner takes out of the business as a share of profit (or return of their investment), not as pay for work.

Example Example: the owner takes a $5,000 distribution in June. It lowers cash and equity on the balance sheet but is not an expense on the P&L.

Notes Draws and distributions are recorded in equity, not as expenses. Taking out more than the business earns drains cash. Entity type matters; confirm with your CPA.

Also: distributions, owner draws, owner's draw, draws, shareholder distributions

Recording income when the money is received and expenses when they are paid.

Example Example: a fleet RO billed March 28 and paid April 15 counts as April income on a cash basis.

Notes Simple, but a month can look better or worse depending on when bills were paid. The IRS has rules on which methods a business may use, including for businesses that keep inventory. Ask your CPA which method you use for taxes and whether your monthly management reports should be accrual.

Also: cash basis, cash method

Recording income when it is earned and expenses when they are incurred, no matter when cash moves. It matches costs to the sales they produced.

Example Example: the same fleet RO billed March 28 counts as March income on an accrual basis, with an account receivable until it is paid.

Notes Accrual reports are usually better for judging monthly performance. Some shops file taxes one way and review management reports another; your CPA will know what fits.

Also: accrual basis, accrual method, accrual accounting

Money customers owe you for work already done (for example fleet or warranty company accounts).

Formula Days to collect (DSO) ≈ accounts receivable ÷ (credit sales for the period ÷ days in the period)

Example Example: $15,000 receivable ÷ ($45,000 fleet sales ÷ 30 days) = 10 days on average to collect.

Notes Review an ‘aging’ report (current, 30, 60, 90+ days). Old receivables are a cash problem even when the P&L looks fine.

Also: A/R, receivables

Money you owe suppliers and vendors for things already received (parts statements, sublet bills).

Example Example: $18,000 owed on parts store statements due on the 10th of next month.

Notes Reconcile parts statements to invoices and credits every month. Missing credits for returns and cores are common.

Also: A/P, payables

Parts, tires and fluids on hand that you own and plan to sell or use on jobs.

Formula Inventory turnover = COGS for the period ÷ average inventory (average = (beginning + ending) ÷ 2)

Example Example: $360,000 yearly parts and tire COGS ÷ $30,000 average inventory = 12 turns a year.

Notes Dead stock ties up cash. How inventory is counted and valued affects COGS and taxes; follow your CPA's method.

Also: parts inventory, stock on hand

A deposit added to the price of some rebuilt or remanufactured parts (like alternators or calipers) that is refunded when the old part (the core) is returned.

Formula Net part cost = part price + core charge − core credit received

Example Example: alternator $200 + $50 core = $250 paid. Return the old core and receive a $50 credit; net cost is $200.

Notes Unreturned or uncredited cores raise parts COGS without anyone noticing. Keep a core log and match credits on supplier statements.

Also: core, cores, core deposit, core credit

A promise that a repair or part will perform for a stated time or mileage. Warranty work can be paid by a manufacturer, a parts supplier or a warranty company, or absorbed by your shop.

Formula Shop-paid warranty cost % = cost of warranty repairs the shop absorbed ÷ sales × 100

Example Example: $1,200 of unpaid labor and replacement parts on warranty returns ÷ $127,000 sales ≈ 0.9%.

Notes Record supplier labor reimbursements and part credits so they reduce the true cost. Some businesses set aside a warranty reserve; ask your CPA whether that fits your reporting.

Also: parts and labor warranty, shop warranty, warranty work

Spreading the cost of long-lasting equipment (lifts, scan tools, vehicles, buildings) over the years you use it, instead of expensing it all at once.

Formula Straight-line depreciation per year = (cost − salvage value) ÷ useful life in years

Example Example: a $12,000 lift with $0 salvage over 8 years = $1,500 depreciation per year (simple management example).

Notes Tax depreciation follows IRS rules (for example MACRS and the Section 179 election) and may differ from the simple method above. Land is generally not depreciated. Your CPA decides the tax method.

Also: depreciate, depreciation expense

Two meanings: (1) spreading the cost of an intangible asset (like goodwill from buying a shop) over time; (2) a loan schedule that splits each payment into interest and principal.

Example Example: a $1,000 loan payment might be $250 interest (an expense) and $750 principal (reduces the loan balance; not an expense).

Notes Only the interest part of a loan payment goes on the P&L. The principal part shows up on the balance sheet and cash flow.

Also: amortize, loan amortization

Things the business owns that have value: cash, receivables, inventory, equipment, vehicles, buildings.

Formula Total assets = current assets + net fixed assets + other assets

Example Example: $70,000 current + $200,000 net fixed + $30,000 other = $300,000 total assets.

Also: asset

Assets expected to turn into cash or be used up within a year: cash, accounts receivable, inventory, prepaid expenses.

Example Example: $30,000 cash + $15,000 receivables + $25,000 inventory = $70,000 current assets.

Also: current asset

Long-lasting things used to run the shop: lifts, alignment machines, scan tools, vehicles, building improvements. Shown at cost minus accumulated depreciation.

Formula Net fixed assets = cost − accumulated depreciation

Example Example: $260,000 equipment cost − $60,000 accumulated depreciation = $200,000 net fixed assets.

Also: property and equipment, PP&E, long-term assets

What the business owes others: supplier bills, credit cards, sales tax collected, payroll taxes due, loans.

Formula Total liabilities = current liabilities + long-term liabilities

Example Example: $50,000 current + $130,000 long-term = $180,000 total liabilities.

Also: liability

Debts due within a year: accounts payable, credit cards, sales tax and payroll taxes owed, the next 12 months of loan principal.

Example Example: $18,000 payables + $6,000 credit cards + $4,000 sales tax owed + $3,000 payroll taxes owed + $19,000 loan principal due this year = $50,000.

Notes Sales tax and payroll taxes you have collected or withheld belong to the government. Keep them out of spending money.

Also: current liability, short-term liabilities

Debts due more than a year from now, like equipment loans, building loans or a loan used to buy the shop.

Example Example: $130,000 left on an equipment and acquisition loan, not counting the next 12 months of principal.

Also: long-term debt, notes payable

The owner's stake on the books: what would be left if the business's assets were worth exactly their book value and all debts were paid.

Formula Equity = assets − liabilities. Ending equity ≈ beginning equity + owner investment + net profit − distributions

Example Example: $300,000 assets − $180,000 liabilities = $120,000 equity.

Notes Book equity is an accounting number, not what the business would sell for.

Also: owner's equity, owners equity, net worth, shareholders' equity

Total profits kept in the business over time (past profits minus losses and minus amounts distributed to owners).

Formula Ending retained earnings = beginning retained earnings + net profit − distributions

Example Example: $60,000 beginning + $40,000 profit this year − $30,000 distributions = $70,000.

Notes Some entity types show this differently (for example partner or member capital accounts).

Also: retained profits

The cushion of short-term resources left after paying short-term debts.

Formula Working capital = current assets − current liabilities

Example Example: $70,000 current assets − $50,000 current liabilities = $20,000 working capital.

Current assets compared to current liabilities. Above 1.0 means you have more short-term resources than short-term debts.

Formula Current ratio = current assets ÷ current liabilities

Example Example: $70,000 ÷ $50,000 = 1.4.

Notes Desirable ratios vary by industry and lender. Cupani does not set a target; compare against your own trend and your lender's terms.

Like the current ratio but without inventory, because parts on the shelf are not cash yet.

Formula Quick ratio = (current assets − inventory) ÷ current liabilities

Example Example: ($70,000 − $25,000) ÷ $50,000 = 0.9.

Also: acid-test ratio, acid test

How much the business owes compared to the owner's stake.

Formula Debt-to-equity = total liabilities ÷ equity

Example Example: $180,000 ÷ $120,000 = 1.5 (the business owes $1.50 for every $1 of equity).

Notes Some lenders count only interest-bearing debt. Ask which version a lender uses.

Also: debt to equity, D/E

The organized list of every account your bookkeeping uses (for example 4000s for sales, 5000s for COGS, 6000s for expenses). It decides what your P&L and balance sheet can show you.

Example Example: 4010 Labor Sales, 4020 Parts Sales, 4030 Tire Sales, 5010 Technician Wages, 5020 Parts Cost.

Notes If sales and costs are not split by category in the chart of accounts, you cannot see labor or parts margins. Set it up with your bookkeeper and CPA; the Shop Owner Accounting course gives a recommended starting layout.

Also: COA, account list

The complete record of every transaction, organized by account. Financial statements are built from it.

Example Example: the ledger for account 4020 Parts Sales lists every parts sale posted from the shop management system this month.

Also: GL, ledger

Checking that your books match the bank, credit card and supplier statements, and fixing any differences.

Example Example: books show $31,200 cash; the bank shows $30,000 because a $1,200 deposit made on the 31st cleared on the 2nd. The difference is explained, so the account is reconciled.

Notes Unreconciled accounts are a common reason a P&L is wrong. Ask your bookkeeper to reconcile every month before you review.

Also: reconcile, bank reconciliation, account reconciliation

Expenses you have incurred but not paid yet (for example wages earned in the last days of the month that will be paid next week).

Example Example: technicians worked the last 3 days of June; $3,000 of wages is recorded as a June expense and a liability until it is paid in July.

Also: accruals, accrued liabilities

Bills paid in advance that cover future months, like a yearly insurance premium. Recorded as an asset and expensed month by month.

Formula Monthly expense = prepaid amount ÷ months covered

Example Example: $12,000 yearly insurance paid in January = $1,000 expense each month.

Notes Expensing the whole bill in one month makes that month look bad and the others look too good.

Also: prepaids

A bank account you can borrow from up to a limit and repay as cash comes in. Useful for timing gaps; risky as a long-term fix.

Example Example: a $25,000 line used for $10,000 of tire inventory in October and repaid by December.

Also: LOC, credit line, business line of credit

Fees banks and processors charge when customers pay by card. A variable expense that grows with sales.

Formula Effective processing rate % = total processing fees ÷ card sales × 100

Example Example: $2,500 of fees ÷ $100,000 of card sales = 2.5% effective rate.

Notes Rules on passing card fees to customers (surcharging) vary by state and card network. Check before you add one.

Also: credit card fees, card processing fees, merchant fees

Money customers owe that you do not expect to collect, removed from receivables as an expense.

Example Example: a $900 RO left unpaid for a year is written off as bad debt.

Also: write-off, uncollectible, bad debts

A technician pay plan where the tech is paid per billed (flagged) hour, not per hour at work.

Formula Flat-rate pay = billed (flagged) hours × the tech's flag rate

Example Example: 45 flagged hours × $30 = $1,350 for the week.

Notes Wage-and-hour laws (minimum wage, overtime, pay for non-productive time) still apply and vary by state. Have an employment attorney or payroll professional review any pay plan.

Also: flat rate, flag pay, flat-rate pay plan, flat rate pay

A pay plan where the technician is paid for every hour at work, whether or not those hours were billed.

Formula Hourly pay = hours at work × hourly rate (+ overtime where required)

Example Example: 40 hours × $32 = $1,280 for the week.

Notes With hourly pay, unbilled hours are a direct cost to the shop, which makes productivity matter more to you.

Also: hourly pay plan, clock pay

A pay plan that combines a base (hourly or salary) with a bonus tied to billed hours, gross profit or quality.

Example Example: $25 per hour at work plus $8 per billed hour above 35 in a week.

Notes Bonuses tied only to hours can reward speed over quality; many shops add quality or comeback conditions. Have plans reviewed for wage-and-hour compliance.

Also: hybrid pay, bonus pay plan, performance pay, salary plus bonus

The true hourly cost of a technician: wages plus employer payroll taxes, benefits, insurance and other costs tied to employing them.

Formula Loaded hourly cost = (wages + employer payroll taxes + benefits + other employment costs) ÷ hours paid

Example Example: ($64,000 wages + $6,000 payroll taxes + $8,000 benefits + $2,000 other) ÷ 2,000 hours = $40 per hour.

Also: loaded labor cost, burdened labor cost, loaded cost

Technician labor cost as a share of labor sales. The flip side of labor gross profit.

Formula Labor cost % = labor COGS ÷ labor sales × 100

Example Example: $24,000 ÷ $60,000 = 40% (so labor gross profit is 60%).

Also: labor cost %, tech pay percentage

Work or credit given free or discounted to keep a customer happy. A real cost even when no invoice shows it.

Example Example: a no-charge recheck uses 1.0 paid tech hour ($40 loaded) and $60 of parts: $100 of real cost.

Notes “Goodwill” also has an accounting meaning: the premium paid when buying a business above the value of its assets. Context tells you which.

Also: goodwill repair, policy adjustment, no-charge work

A record in the books that moves an amount between accounts, often used by bookkeepers to correct or adjust at month end.

Example Example: a $500 parts return credit posted to Advertising by mistake is moved to Parts COGS with a journal entry.

Also: JE, adjusting entry

The routine at the end of each month where the bookkeeper reconciles accounts, records adjustments and finalizes the financial statements.

Example Example: by the 10th of the next month, bank and card accounts are reconciled, parts statements are matched and the P&L and balance sheet are final.

Also: closing the books, close the books, monthly close

Totals for the most recent 12 months, used to smooth out seasonal ups and downs.

Formula TTM sales = sum of the latest 12 monthly sales figures

Example Example: in June 2026, TTM sales = July 2025 through June 2026 added together.

Also: TTM, trailing 12 months, rolling 12 months

A tax set by states and local governments that the shop collects from customers on taxable items and sends to the government. It is not the shop's income.

Formula Sales tax collected = taxable amount × the combined rate for your location (your state and locality decide both what is taxable and the rate)

Example Example (placeholder, not a real rate): on an RO with $400 of taxable items and a placeholder rate of R%, the shop collects $400 × R% and owes that amount to the state.

Notes What is taxable differs a lot. For example, the Texas Comptroller says separately stated motor vehicle repair labor is not taxable while parts are, and New York's auto repair tax bulletin says sales tax applies to the total charge for parts and labor. Fees, shop supplies and tires can be treated differently too. Rules vary by state and locality and can change. Confirm how this applies to your shop with your CPA or tax adviser.

Also: sales taxes, sales and use tax

Sales tax you have collected but not yet sent to the state. It sits on the balance sheet as a liability.

Example Example: $4,000 of sales tax collected in June shows as a $4,000 liability until it is filed and paid.

Notes Keep collected sales tax out of your sales line and do not spend it. Late or missing payments can bring penalties and interest.

Also: sales tax liability, sales tax owed

A tax some states charge on taxable items you buy for your own use when sales tax was not charged at purchase (for example equipment bought from an out-of-state seller).

Example Example: a shop buys a scan tool online and no sales tax is charged; where the state requires it, the shop reports and pays use tax on it.

Notes Rules vary by state and locality and can change. Confirm how this applies to your shop with your CPA or tax adviser.

A form that lets a shop buy parts it will resell to customers without paying sales tax to the supplier, where the state allows it.

Example Example: a shop gives its parts supplier a resale certificate, then collects sales tax from the customer on the parts it installs (where parts are taxable).

Notes Tools, equipment and consumables used up in the shop are often treated differently from parts resold to customers. Rules vary by state and locality and can change. Confirm how this applies to your shop with your CPA or tax adviser.

Also: resale exemption, exemption certificate, reseller permit

A fee some states require sellers to collect on new tire sales, usually to fund tire recycling. Separately, many shops charge their own tire disposal fee.

Formula Tire fee collected = number of qualifying new tires sold × the per-tire fee your state sets (if any)

Example Example (placeholder): 50 qualifying tires × your state's per-tire fee = the amount collected and owed to the state, minus any portion the state lets sellers keep.

Notes Whether a fee applies, its amount, exemptions and whether sales tax applies to it are set by each state (Washington and New York, for example, publish their own tire fee rules). A state-required fee you collect is usually a liability, not your revenue; your own disposal fee is usually your revenue. Rules vary by state and locality and can change. Confirm how this applies to your shop with your CPA or tax adviser.

Also: tire tax, tire fees, waste tire fee, tire recycling fee, tire disposal fee

A charge some shops add to ROs to recover the cost of disposing of used oil, fluids, filters and other waste properly.

Formula Environmental fee margin = environmental fees charged − disposal costs paid

Example Example: $500 of fees charged and $350 paid to a waste hauler = $150 left over.

Notes This is usually a shop charge, not a government fee, even when it is called an “EPA fee.” Disclosure rules, limits and taxability vary by state and locality. Rules vary by state and locality and can change. Confirm how this applies to your shop with your CPA or tax adviser.

Also: hazmat fee, environmental charge, EPA fee, waste disposal fee

Taxes tied to wages. Employers withhold some from employee pay (income tax and the employee share of Social Security and Medicare) and also pay their own share plus unemployment taxes.

Formula Employer payroll tax cost = employer Social Security + employer Medicare + federal unemployment (FUTA) + state unemployment and any other state or local payroll taxes

Example Example (rates intentionally left out): payroll software calculates each tax on a $1,000 paycheck; the employer's share is added to the cost of that employee.

Notes Federal rates and wage limits change and are published by the IRS (Publication 15). State and local payroll taxes vary. Use a payroll service or professional, and never use withheld taxes as operating cash.

Also: employment taxes, employer taxes, FICA

Employer-paid taxes that fund unemployment benefits: a federal tax (FUTA) and, in most states, a state tax (often called SUTA).

Example Example: these appear as employer payroll tax lines on each quarterly payroll report.

Notes State rates are usually assigned to each employer. Rules vary by state and locality and can change. Confirm how this applies to your shop with your CPA or tax adviser.

Also: FUTA, SUTA, state unemployment tax

Social Security and Medicare tax paid by people who work for themselves (for example many sole proprietors and partners) on their business earnings.

Example Example: a sole proprietor's shop profit flows to their personal return, where self-employment tax may apply.

Notes How the owner is taxed depends on the entity type. Rules vary by state and locality and can change. Confirm how this applies to your shop with your CPA or tax adviser.

Also: SE tax

A business whose profit is taxed on the owners' personal returns instead of at the business level (common for sole proprietors, partnerships, many LLCs and S corporations).

Example Example: a pass-through shop's P&L may show no income tax line because the owners pay the tax personally.

Notes Some states tax certain pass-through entities directly. Rules vary by state and locality and can change. Confirm how this applies to your shop with your CPA or tax adviser.

Also: flow-through entity

Tax payments made during the year (usually quarterly) on income that has no withholding, such as pass-through shop profit.

Example Example: an owner moves part of each month's profit into a separate account to cover quarterly estimated payments.

Notes Rules vary by state and locality and can change. Confirm how this applies to your shop with your CPA or tax adviser.

Also: quarterly taxes, estimated tax payments

Whether someone who works for the shop is an employee (W-2, payroll taxes withheld) or an independent contractor (1099). It depends on how the work is controlled, not on what you call it.

Example Example: a technician who works your schedule, in your bays, with your equipment is generally treated as an employee.

Notes Misclassification can bring back taxes and penalties. Federal and state tests differ. Ask your CPA or an employment attorney.

Also: 1099 vs W-2, worker classification, independent contractor, 1099 contractor

A local tax some places charge on business equipment and/or real estate.

Example Example: a county sends a yearly bill based on the equipment the shop lists on a property return.

Notes Rules vary by state and locality and can change. Confirm how this applies to your shop with your CPA or tax adviser.

Also: personal property tax, equipment tax

Your plan for sales, costs and profit for the coming months, usually one year broken into months.

Formula Budgeted net profit = budgeted sales − budgeted COGS − budgeted operating expenses

Example Example: plan $1,500,000 sales, $750,000 COGS and $630,000 expenses = $120,000 planned profit for the year.

Notes Build it from your own history plus specific changes you plan (a price change, a new tech), not from a wish.

Also: annual budget, operating budget

The difference between what you planned and what actually happened.

Formula Variance $ = actual − budget. Variance % = (actual − budget) ÷ budget × 100

Example Example: budgeted parts GP $25,000, actual $22,500: variance −$2,500 (−10%).

Notes Investigate big variances, not every penny. Note whether a variance is good or bad (more sales is good; more expense is usually bad).

Also: budget vs actual, budget vs. actual

Your best current estimate of where the numbers will land, updated as you learn more. A budget is the plan; a forecast is the updated expectation.

Formula Simple sales forecast ≈ expected car count × expected ARO

Example Example: 380 expected ROs × $330 expected ARO = $125,400 forecast sales.

Notes Write down the assumptions behind every forecast (car count, ARO, margins, hiring). Forecasts are estimates, not promises.

Also: forecasting, financial forecast, projection, projections

A forecast that always looks a set time ahead (for example 12 months) and is updated each month as one month ends.

Example Example: each month after the books close, the owner drops the finished month and adds a new month 12 months out.

Also: rolling 12-month forecast

A forecast of cash coming in and going out, week by week or month by month, so you can see shortfalls before they happen.

Formula Ending cash = beginning cash + expected collections − expected payments

Example Example: $30,000 beginning + $120,000 collections − $135,000 payments (including a $15,000 equipment payment) = $15,000 ending cash.

Also: cash forecast, cash projection, 13-week cash flow

A mid-range plan describing where the shop should be in three years (sales, profit, staffing, equipment, services) and the steps and numbers to get there.

Formula For each year: target sales, gross profit %, operating expenses and net profit, plus the capacity (techs, bays) needed

Example Example: Year 1 add a fourth technician; Year 2 add calibration equipment; Year 3 open Saturdays. Each step lists its expected cost, sales effect and the assumption behind it.

Notes Review it at least yearly. Tie each goal to a number you can check on the P&L or balance sheet.

Also: three-year plan, 3 year plan, three year plan

A long-range plan for the business: growth, a second location, a building purchase, owner succession or a future sale. Usually less detailed after the first year.

Formula Year 1 by month or quarter; years 2–5 by year: sales, gross profit, expenses, profit, cash, debt and major purchases

Example Example: grow to two locations, lower debt-to-equity, and develop a manager who can run each site without the owner.

Notes The SBA's business plan guidance describes a five-year financial outlook with more detail (monthly or quarterly) in the first year. Lenders and buyers often ask for one.

Also: five-year plan, 5 year plan, five year plan

The written direction for the business: who you serve, what you sell, how you compete and what you will and won't do.

Example Example: “Serve late-model import owners within 10 miles; focus on diagnosis and maintenance; no body work.”

Also: business plan, strategy

Projected financial statements (P&L, balance sheet, cash flow) showing what the numbers would look like if a plan or assumption happens.

Example Example: a pro forma P&L for adding a fourth technician: +$180,000 labor sales, +$80,000 labor COGS, +$5,000 tools and training.

Notes Label pro formas as projections and list the assumptions. They are not results.

Also: pro forma statements, projected financial statements

Building several versions of a forecast (for example slow, expected and strong) to see how changes in car count, ARO or margin affect profit and cash.

Example Example: car count −10%, as planned, and +10%, each showing the resulting profit and cash balance.

Also: what-if analysis, sensitivity analysis

Spending on long-lasting equipment or improvements (lifts, scan tools, building work). It goes on the balance sheet and is depreciated, rather than expensed all at once.

Example Example: a $40,000 calibration system planned for next spring, financed over 5 years.

Notes Put capex in your cash flow forecast; it can drain cash even when the P&L shows a profit.

Also: capex, CapEx, capital purchase, capital budget

Cash set aside to cover expenses during slow periods or emergencies.

Formula Months of reserve = cash reserve ÷ average monthly operating expenses

Example Example: $90,000 reserve ÷ $45,000 monthly expenses = 2 months.

Notes How much is right depends on your situation and any lender requirements. Cupani does not prescribe a number.

Also: operating reserve, emergency fund

A goal that is Specific, Measurable, Achievable, Relevant and Time-bound.

Example Example: “Raise parts margin from 42% to 45% by June 30 by updating the matrix and auditing overrides weekly.”

Also: SMART goals

Comparing a period to the same period a year earlier, to remove seasonal effects.

Formula YoY change % = (this year − last year) ÷ last year × 100

Example Example: June sales $130,000 vs. last June $120,000 = +8.3% YoY.

Also: YoY, year-over-year, prior year comparison

A plan for who will run or own the shop when the current owner steps back: a family member, key employee, partner or outside buyer.

Example Example: a 5-year plan to train a general manager, document processes and clean up the financial statements before a planned sale.

Notes Buyers and lenders look closely at clean, consistent financial statements. Talk with your CPA, an attorney and, if selling, a qualified broker or valuation professional.

Also: exit plan, exit strategy, succession planning

An estimate of what the business is worth, often based on earnings (like adjusted EBITDA), assets or comparable sales.

Example Example (illustrative only): a buyer reviews three years of P&Ls, adjusted earnings, equipment condition and the customer base before making an offer.

Notes Methods and multiples vary widely. Cupani does not publish valuation multiples; use a qualified valuation professional.

Also: valuation, sale value

A set time each month to read the closed P&L, balance sheet and KPIs, compare them to the budget and decide on actions.

Example Example: on the 12th of each month the owner and bookkeeper spend an hour on the statements, KPIs and variances, and leave with three action items.

Also: monthly review, financial review meeting

A number a buyer multiplies by earnings (often EBITDA) to estimate what a business is worth. A 7x multiple means the price is about seven times those earnings.

Example Example: $400,000 of EBITDA at a 7x multiple is about $2.8 million of business value, before real estate or other adjustments.

Notes Multiples vary by the buyer, the market, the quality of the books and the shop. Cupani scenarios are illustrative, not a quote or appraisal.

Also: EBITDA multiple, valuation multiple, earnings multiple

A common label for smaller mid-sized business sales—typically companies worth a few million to a few tens of millions of dollars, not typical owner-operated shops (often under $5M in sales) and not large public companies.

Example A well-run independent auto shop can sit in this range when it sells, depending on earnings, size and the buyer.

Notes Definitions of the range vary by advisor and deal. The 7x-and-up ‘premium value’ note on Cupani’s Shop Value slider is a rule of thumb for this kind of sale, not a guarantee.

Also: lower-middle market, lower middle-market, LMM

Application programming interface. A published way for one program to send a request to another and get a response, without rummaging around inside it.

Also: application programming interface, APIs

A specific web address for one kind of API job, such as generating a reply or listing keys.

Also: endpoints

The message a program sends to an endpoint saying what it wants done, often in JSON, usually with an API key for proof.

Also: API request, API requests

What comes back from an API: the result if the request worked, or a status code and error message if it did not.

Also: API response, API responses

A secret string that proves which account or team is calling an API. Treat it like a password. It often also meters usage and cost.

Also: API keys, access key

A way to send an API key with a request, usually in an Authorization header: the key ‘bears’ proof of who is asking.

Also: Bearer

A cap on how many requests or tokens you can send in a period of time. Going over it usually returns HTTP 429; slow down rather than retrying in a tight loop.

Also: rate limits, 429

The list of things a key is allowed to do — for example which models or endpoints it may call. Grant only what the job needs.

Also: ACL, ACLs, access control list, permissions

Replace a key’s secret with a new one and invalidate the old secret, often leaving the same key name on the list. Store the new secret and update every tool.

Also: rotating, key rotation

Turn off or remove a key so it can no longer make requests. Use this when a key leaks, a job ends, or a person or tool should lose access. Check your portal for the exact button name.

Also: revoking, revoked, disable a key, delete a key

Software development kit. A packaged library in a programming language that helps a developer call a product without hand-writing every request.

Also: software development kit, SDKs

Command-line interface. A program you run in a text terminal with typed commands, such as the Cursor Agent CLI.

Also: command-line interface, command line, Agent CLI

A named value stored in a computer’s or server’s environment, such as XAI_API_KEY, that a program can read without putting the secret in the source code.

Also: environment variables, env variable, env variables, .env

A way for a service to push a notice to a web address you control when something happens, instead of you asking over and over. Official support varies by product — check the current docs.

Also: webhooks

JavaScript Object Notation. A structured text format of names and values, commonly used to shape API requests and responses.

Also: JavaScript Object Notation

A command-line tool that sends web requests. Official API quickstarts often show a curl example. Use an environment variable for the key, never a real key in a screenshot.

Also: cURL

The administrative API (public docs: https://management-api.x.ai) and its separate key, used to create, list, rotate, or delete inference keys and related team API settings — not to chat with a model in everyday tools.

Also: Grok Management key, management key, management keys

Secure Shell key. A different kind of credential, usually a file pair, used to prove your identity to a computer or code host. It is not a Grok API key. Check the SSH tab in your portal for how yours are managed.

Also: SSH keys, SSH

A short number in an API response that summarizes the outcome. 401 usually means the key was not accepted; 403 means not allowed; 429 means slow down; 400 means fix the request; 500 means a server problem.

Also: HTTP status, status codes, 401, 403, 400, 500