Why auto shops get overcharged
Auto repair has a few unique characteristics that processors take advantage of:
- High ticket sizes. A $1,800 transmission job on tiered pricing might generate $66 in fees; on competitive Interchange Plus, $42. That's $24 per job × 5 – 10 big jobs a week.
- Rewards card heavy. Customers paying for car work disproportionately use rewards cards. Premium rewards interchange is high; on tiered pricing, "Non-Qualified" rates eat the margin.
- Fleet and corporate cards. WEX, Voyager, Comdata, and standard corporate cards have specific interchange categories. Processors often charge premium rates without optimizing for the category.
- Third-party financing. Snap, Synchrony CarCare, Sunbit — separate financing products that should be evaluated alongside your processor's pricing.
What we look for in an auto shop statement
- Tiered pricing on big-ticket repairs — single biggest cost driver. Almost always worth switching to Interchange Plus.
- Fleet card optimization — fleet card interchange has specific categories. If you're treating them as standard credit, you're overpaying.
- Deposit and ROA (recurring) patterns — customers leaving cards on file for ongoing work; should be priced as recurring CNP.
- Equipment leases — terminal leases at $50 – $90/month for hardware that costs $300 outright.
- Industry-specific MCCs — 7538 (auto repair shops), 7549 (towing), 5511 (auto dealers). Wrong MCC can mean wrong interchange.
- PCI non-compliance fees — endemic in this industry. Many shops don't realize they can SAQ-self-attest for free.
A typical auto shop audit
Real example (anonymized): a 4-bay independent shop, $38,000/month in card volume, average ticket $312.
| Current cost | Optimized cost | Annual savings |
|---|---|---|
| Tiered, effective rate 3.27% | Interchange Plus, effective rate 2.44% | $3,778 |
| $59/month PCI non-compliance | $0 | $708 |
| Terminal lease ($79/mo) | Owned outright | $948 / year |
| Monthly minimum $35 | $0 | (usually offset by volume) |
| Year 1 savings: | $5,434 | |
FAQ — auto repair shops
Do you work with shop management software like Mitchell 1, ShopBoss, or Tekmetric?
Yes. Most modern processors integrate with the major auto shop management platforms. We confirm integration before recommending a switch — never leave you with a workflow that broke.
What about fleet cards?
Fleet cards (WEX, Voyager, Comdata) have their own interchange categories. Worth checking your statement for these specifically — if any show up under generic credit interchange, you're overpaying.
Can I keep Snap / Synchrony / Sunbit?
Yes. Those are separate financing products. Your regular processing and those programs coexist.