Quick answer: US restaurants typically pay 2.3-3.5% per card transaction. Flat-rate pricing (Square, Toast Payments) is simple but often more expensive at volume; interchange-plus is more transparent and usually cheaper for busy restaurants. Watch out for POS systems that add a markup on top of processing — on $40k/month in card sales, a 0.3% difference is about $1,440 a year.
Ask a restaurant owner what their POS costs and they will quote the monthly software fee. Ask what card processing costs and you often get a shrug — even though it is usually the bigger number. Here is how it actually works, so you can stop overpaying.
How much are restaurant credit card processing fees?
Most US restaurants pay an effective rate of 2.3% to 3.5% per card transaction, made up of three layers: interchange (set by Visa/Mastercard, goes to the card-issuing bank), assessments (the card networks), and the processor's margin. Only that last layer is negotiable — which is exactly where the pricing model matters.
Interchange vs flat-rate vs interchange-plus
| Model | How it works | Best for |
|---|---|---|
| Flat-rate | One blended rate, e.g. 2.6% + 10¢ | Low volume, simplicity |
| Interchange-plus | Interchange + fixed processor margin (e.g. +0.30%) | Busy restaurants; most transparent |
| Tiered | "Qualified/mid/non-qualified" buckets | Usually avoid — least transparent |
Flat-rate is easy and fine when you are small. As volume grows, interchange-plus almost always wins because you stop overpaying the blended margin on every sale.
Why your POS choice matters more than you think
Some POS systems bundle payments and take a percentage on top of the underlying processing — a markup baked into every transaction, forever. Others let you bring your own processor and charge only a flat software fee. That difference compounds: at $40k/month, even a 0.3% POS markup is roughly $1,440/year — often more than the software itself. This is the hidden cost behind "cheap" or "free" POS deals; see the numbers in how much Toast POS really costs.
How to lower your processing fees
- Move to interchange-plus if you are on flat-rate or tiered and doing real volume.
- Use a POS with no per-transaction markup — bring your own merchant account. DineOpen charges a flat $10/month and takes 0% of your transactions.
- Encourage debit and lower-cost cards where practical.
- Review your statement for junk fees (PCI, statement, batch) at least twice a year.
- Consider surcharging/cash discounts where legal in your state, within card-network rules.
Frequently asked questions
What is the average credit card processing fee for restaurants? Most US restaurants pay an effective 2.3% to 3.5% per transaction, combining interchange, network assessments, and the processor's margin.
Is interchange-plus cheaper than flat-rate? For most busy restaurants, yes. Interchange-plus exposes the true interchange cost and adds a fixed, transparent margin, so you stop overpaying the blended rate that flat-rate pricing charges on every sale.
Does my POS add to processing fees? It can. Some POS platforms take a percentage on top of processing. Choosing a POS with a flat software fee and no per-transaction markup — and bringing your own processor — avoids that.