Source: https://bluefinchadvisors.com/blog/gross-margin-net-margin-card-processing-costs-shop Payment resources for owner-run local businesses # Use net profit, not gross margin, to judge the fee burden Separate job gross profit from business net profit before comparing processing costs. A shop worksheet shows why the two percentages answer different questions. [Use the free tool]() [Read the guide]() Updated 2026-10-24 | 3 minute read | By [BlueFinch Advisors]() ## Gross profit and final-remainder bridge Trace a separately recorded processing expense through one simplified income-and-expense bridge. Use the interactive tool without signing up. It runs in your browser: enter your numbers, save a comparison, download results or print a working copy. Your numbers are not sent to BlueFinch. ### Illustrative example inputs These starting values show how the math works. They are not industry averages, customer results or a quote. | Input | Example value | | --- | --- | | Period revenue Consistent recognized revenue, not net processor deposits. | $80,000.00 | | Direct job costs, excluding processing Exclude processing here so the fee is deducted once below. | $44,000.00 | | Other costs, excluding processing Enter all other costs included in this simplified view; do not include processing twice. | $26,400.00 | | Separately recorded processing expense This tool assumes it is excluded from the two preceding cost fields. | $1,600.00 | | Current fee expense removed in the scenario Cannot exceed the entered current processing expense. | $1,200.00 | | New or additional recurring costs Enter only separately added costs not already represented by the retained current expense. | $0.00 | ### Example results | Measure | Result | | --- | --- | | Gross profit in this classification | $36,000.00 | | Simplified final remainder Revenue − direct costs − other costs − processing. | $8,000.00 | | Fee compared with final remainder | 20% | | Scenario final remainder | $9,200.00 | ### Calculation detail | Measure | Result | | --- | --- | | Gross margin | 45% | | Final-remainder margin | 10% | | Fee compared with gross profit | 4.44% | | Net recurring cost change | $1,200.00 | ### Model assumptions - Starting figures are fictional planning examples, not a quote, verified outcome or small-business margin benchmark. - Processing is excluded from direct and other costs, then deducted exactly once. Do not use this model without adjusting inputs if your books classify it elsewhere. - The final remainder is simplified. It is not verified net profit if relevant costs or taxes are missing. - Replacement scenarios hold revenue and other expenses unchanged, exclude further tax effects and do not predict customer behavior. - Enter remaining or proposed charges only after checking written terms. Blank unknowns are not zero; all fields must be completed before calculation. ### Read alongside these results - Negative differences remain visible. A negative profit denominator gives a signed mathematical ratio, not a share of positive profit. Zero denominators are unavailable. [Download this worked example (CSV)](). Use the interactive version to export your own inputs and results. ![Customer and staff member at a salon checkout counter.]() [Photo by Blake Wisz]() on [Unsplash](). Stock photography. [Photo license](). A wrap job can show a healthy gross margin, while the shop ends the month with little net profit. Those figures describe different stages of the business. Gross profit compares revenue with costs counted as direct job costs. Net profit accounts for the wider expense picture. Processing fees deserve review in both discussions, but the arithmetic must match the question. Mix up the two and you get dramatic claims built on the wrong denominator. A fee at 5% of gross profit could be 25% of net profit. Those percentages mean little until you know which costs were deducted first. ## Use with this guide ### [review your bookkeeping workflow]() Continue with review your bookkeeping workflow. ### [processing statement guide]() Continue with processing statement guide. ### [expense comparison tool]() Continue with expense comparison tool. ### [How Card Fees Cut Into Body Shop Profit]() Compare card fees with what remains after parts, materials, labor, sublet work and overhead. ## Next, compare payment costs Enter your processing volume and current fees to estimate how payment programs compare. Costs specific to your account still apply. [See your savings instantly]() Check your own costs: [calculate your effective processing rate]() or [upload a merchant statement for analysis](). ## Follow the accounts through one month Take a fictional shop bringing in $80,000. Direct job costs run $44,000, leaving gross profit of $36,000, or 45% of revenue. Say other operating costs are $26,400, with $1,600 in processing expenses recorded separately. That leaves $8,000 in profit, or 10% of revenue, before any additional items left out of this simplified example. Processing costs are about 4.4% of the $36,000 gross profit. Against the $8,000 final remainder, that same cost is 20%. The shop isn’t losing both amounts. The same $1,600 is measured against two different totals. The IRS recommends reliable records for financial reporting, so you can trace the cost instead of trusting a processor’s headline percentage. Sources for this section: [IRS: business recordkeeping]() ## Find the fee before subtracting it Businesses classify expenses differently. If your accountant already included processing in direct costs, subtracting it again below gross profit understates the result. And if your bookkeeping export nets fees against deposits, the sales and fee lines may need reconciliation before any margin comparison makes sense. Ask where the processing bill shows up. Are all related charges included? Monthly account fees and gateway charges may land in separate accounts. The [processing statement guide]() helps you spot the underlying charges, but your accountant should confirm how they enter the financial statements. A bank deposit doesn’t show the full revenue and expense trail. ## Use each margin for the decision it supports Gross profit lets a shop assess its service mix, material allowance or labor estimate. Net profit helps an owner consider the wider business after rent, administration and other costs. A lower processing expense does not automatically fix an underpriced job. A higher job margin does not automatically cure an expensive office structure. Cutting the fictional fee by $1,200 bumps the final remainder from $8,000 to $9,200, with every other figure unchanged. Film use, installer hours and rent stay the same. But if switching providers brings new admin work or account costs, subtract those from the projected improvement before you show the result. ## Put the definitions beside the figures The worksheet asks where fees appear in the accounts. A number without its classification is easy to misuse, so [review your bookkeeping workflow]() and record one consistent definition for each margin. Use that same definition when comparing months. And don’t call revenue minus selected expenses verified net profit when major expense categories are missing. NYU Stern's industry dataset separates gross from net measures. So name the measure instead of tossing around a percentage without context. It isn't a benchmark for your shop. Use your own records in the [expense comparison tool](), then compare the written replacement costs. A clear definition is often more valuable than another decimal place in a savings estimate. If the report labels are unfamiliar, [review your bookkeeping workflow]() with the person preparing them. Ask where processing expenses, owner compensation, and taxes show up. Agree on what the margin means before comparing one month’s ratio with another. Sources for this section: [NYU Stern: January 2026 U.S. industry margins]() ## Primary sources BlueFinch last reviewed these sources on October 23, 2026. Check the linked sources for current requirements and product details. - [IRS: business recordkeeping]() - [NYU Stern: January 2026 U.S. industry margins]() Use this page for general business information. It is not legal, tax, or accounting advice. ## Related resources - [Why your card deposit is smaller than shop sales]() - [Bank balance, sales and profit: three different shop numbers]() [AI site overview](https://bluefinchadvisors.com/llms.txt) · [Full Toolbox details](https://bluefinchadvisors.com/llms-full.txt)