Merchant Funding Payback Estimator for Auto Repair Shops
Thinking about funding a new lift, a scan tool, ADAS calibration equipment, or another tech for your auto repair shop? Enter your shop's card sales and the offer terms to see roughly what would come out of each repair ticket and how long payback could take before you sign anything.
Your estimate
Estimates are based on published industry averages and are not a quote. Actual rates depend on card mix, ticket size, industry, and underwriting.
A payments specialist can walk through your funding options and what an actual application would look at. This estimate is not an offer of credit or an approval decision.
What counts as card volume for an auto repair shop
Merchant funding is sized and repaid against card sales, not total revenue. For most auto repair shops, that means card-present payments at the counter when the customer picks up the vehicle, plus card-not-present payments taken over the phone or through a text-to-pay link when the customer is at work and the car is ready.
Several common revenue streams usually do not run through your card processor and should not be included in the 'Average monthly card sales' field: insurance claim payments by check or ACH, fleet and commercial accounts you invoice on net terms and collect by ACH, cash, and third-party consumer repair financing that pays out to you outside your card processing. Ask your funder how they treat each of these, but for this estimator, enter card sales only.
Repair tickets are lumpy. A day of oil changes and inspections looks very different from a day with two engine or transmission jobs. Use an average of several months from your processing statements, ideally a full year, instead of your best recent month. Overstating volume makes the payback look faster than it will be.
Worked example: a hypothetical six-day auto repair shop
These numbers are entirely hypothetical. A shop open 6 days a week, in business 30 months, averages $60,000 a month in card sales and wants $40,000 to add an alignment rack. The offer under review has a 12% holdback and a 1.25 factor rate.
Six days a week works out to 26.00 open days a month, so average daily card sales are about $2,308. With 30 months in business, the estimated range is $60,000 to $90,000, so the full $40,000 request is used. Out of every $100 in card sales, $12 goes to repayment, or about $277 a day. Total payback is $50,000, so the cost of capital is $10,000. At flat sales, payback takes 181 open days, about 7.0 months or roughly 30 weeks, and repayment runs about $7,200 a month.
If card sales ran 20% below that average for the whole payback period, the daily holdback would drop to about $222, and payback would stretch to 226 open days, about 8.7 months. The total cost is still $10,000 in dollars; it just takes longer to pay.
Estimates are based on published industry averages and are not a quote. Actual rates depend on card mix, ticket size, industry, and underwriting.
How seasonality, parts costs, and big tickets affect holdback at auto repair shops
Many auto repair shops see demand shift with the weather and the calendar, such as battery and tire work when it turns cold, A/C repairs when it heats up, and deferred repairs that come in when customers have more cash. Your pattern depends on your region and mix, so look at your own statements. A percentage holdback flexes with those swings: a slow week pays less, a busy week pays more.
Not every offer works that way. Some are repaid by a fixed daily ACH debit instead of a percentage of card sales. For a shop with uneven daily tickets, a fixed debit still comes out on a slow Tuesday with no big jobs. Confirm which structure you are being offered and how reconciliation works if sales drop.
The holdback is taken from gross card sales, including the parts portion of each ticket. On a big job where most of the invoice is parts you already paid your supplier for, 12% of the ticket can be a much larger share of the gross profit on that job. Before choosing a holdback percentage, compare the monthly repayment to your gross profit, not your sales.
What a good result looks like for an auto repair shop
A healthy result is one where the monthly repayment still fits in your slowest month after payroll, parts, rent, and your current processing costs. If the slow-sales scenario would leave you short on payroll for your techs, the amount, holdback, or term probably needs to change.
Tie the cost to what the money will produce. In the hypothetical example above, $10,000 of cost over about 7 months means the new alignment rack would need to add a little over $1,400 a month in gross profit during payback just to cover the cost of capital. If the equipment takes months to ramp up, a longer, cheaper option may fit better. The term loan comparison in the full breakdown shows this side by side.
Also check what you already pay to accept cards. Shops often find statement fees, PCI non-compliance fees, monthly minimums, batch fees, equipment leases, and early termination clauses on their processing statements. Trimming those does not replace funding, but it lowers the fixed costs that the repayment has to fit around. If you want help reading your statement or reviewing an offer, talk to a payments specialist.
Frequently asked questions
Do insurance payments and fleet invoices count toward my card volume?
Usually not, if they arrive by check or ACH. Funders typically look at what settles through your card processor. If some fleet customers pay invoices by card, those payments generally count. Enter only card sales in the estimator and ask any funder how they treat insurance and fleet receivables.
Will the holdback come out of big repair tickets where most of the money is parts?
With a percentage holdback, yes. It applies to the whole card payment, including parts and fluids. That is why you should compare the monthly repayment to your gross profit after parts, not just your sales. A lower holdback percentage lowers the hit on each ticket but stretches the payback period.
I'm buying a lift or ADAS calibration equipment. Should I compare this to equipment financing?
It is worth comparing. Enter the APR of any equipment or term loan you have been offered in the 'Term loan APR to compare against' field. The full breakdown shows both options side by side, with monthly payment, per-open-day payment, total cost, and approximate APR, so you can see the tradeoff between speed and cost.
What happens if my shop has a slow season during payback?
With a true percentage holdback, you pay less on slower days and payback takes longer, but the total dollar cost does not change. With a fixed daily ACH debit, the amount stays the same regardless of sales unless the funder agrees to adjust it. The gated slow-sales scenario shows how far payback stretches if card sales run 20% below your average.
Do I have to switch card processors or terminals to get funding?
Some funders require repayment to run through a processor they work with, and others use ACH debits from your bank account and let you keep your current setup. Ask before you sign, and also ask about origination or underwriting fees taken out of the funded amount and whether there is a discount for paying early.