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Credit card processing fees, explained
The short answer
Credit card processing fees average 2% to 3% per transaction. That total has three layers: interchange (paid to the card-issuing bank, ~1.5%–1.65% + ~$0.10 on consumer cards), card-network assessments (Visa/Mastercard, ~0.13%–0.15%), and the processor's markup (the only negotiable part).
Two pricing models matter: flat-rate (one simple number like 2.6% + 15¢, easy but you overpay at volume) and interchange-plus (interchange + a fixed markup, more transparent and usually cheaper above ~$15,000–$25,000/month). The number to watch is your effective rate: total fees ÷ total card sales.
What you're actually paying for
| Layer | Who gets it | Typical size | Negotiable? |
|---|---|---|---|
| Interchange | Customer's bank (issuer) | ~1.5%–1.65% + ~$0.10 (consumer credit) | No; set by the card networks |
| Assessments | Visa / Mastercard / Amex | ~0.13%–0.15% | No |
| Processor markup | Your processor / POS | Varies widely | Yes; this is the part you shop |
Interchange and assessments are fixed costs that every processor pays. The markup is the only part you control, which is why being locked to one processor is so expensive: you can't negotiate the one layer that's negotiable.
Flat-rate vs interchange-plus
| Model | How it works | Best for | Watch out for |
|---|---|---|---|
| Flat-rate | One blended rate, e.g. 2.6% + 15¢ | Low volume, simplicity, new businesses | Gets expensive past ~$15K–$25K/month |
| Interchange-plus | Interchange + a fixed markup (e.g. + 0.30% + 10¢) | Established businesses, higher volume | Statements look complex; demand the markup in writing |
| Tiered | 'Qualified / mid / non-qualified' buckets | Almost nobody; avoid | Opaque; downgrades inflate the effective rate |
Common 2026 flat rates
| Provider | Card-present | Online / keyed |
|---|---|---|
| Square | 2.6% + 15¢ (Free plan) | 3.3% + 30¢ online; 3.5% + 15¢ keyed |
| Toast | 2.49% + 15¢ (paid plan) / 3.09% + 15¢ (free plan) | Higher for keyed |
| Clover | 2.3%–2.6% + 10¢ (varies by reseller) | ~3.5% + 10¢ |
| Shopify | 2.6% + 10¢ (Retail) | 2.9% + 30¢ online; +0.6–2% if not Shopify Payments |
| Lightspeed | From 2.4% + 10¢ | Plus ~$400/mo to use a third-party processor |
How to find your effective rate
Ignore the headline number on the ad. Pull last month's statement and divide total fees by total card sales. That's your effective rate, and it's the only like-for-like way to compare. For example, $560 in fees on $20,000 of card sales is a 2.8% effective rate, even if the brochure said 2.6%, because of per-transaction fees, keyed sales and downgrades.
Frequently asked questions
What is the average credit card processing fee in 2026?
About 2%–3% per transaction. It's made of interchange (~1.5%–1.65% + ~$0.10 to the customer's bank on consumer cards), network assessments (~0.13%–0.15%), and the processor's markup, the only negotiable layer.
What is the difference between flat-rate and interchange-plus pricing?
Flat-rate charges one blended number (e.g. 2.6% + 15¢), which is simple but expensive at volume. Interchange-plus charges true interchange plus a fixed markup, which is more transparent and usually cheaper once you exceed roughly $15,000–$25,000/month in card sales.
What is an effective processing rate?
Total processing fees divided by total card sales for the period. It is what you pay after per-transaction fees, keyed sales and downgrades, and the only fair way to compare two processors.
Can I negotiate credit card processing fees?
You can negotiate the processor's markup, but not interchange or assessments. That only works if your POS lets you choose your processor. Systems locked to one processor (Square, Toast, SumUp) leave you nothing to negotiate.
Why do per-transaction fees matter?
The fixed cents (e.g. +15¢) hit hardest on small tickets. A café averaging $5 sales pays a far higher effective rate from 15¢ than a restaurant averaging $60. Low-ticket businesses should weight the per-transaction fee heavily.