How Much Do Credit Card Processing Fees Cost?

The three layers of a processing fee

Every card transaction fee is generally composed of interchange (paid to the cardholder's issuing bank), network assessments (paid to Visa/Mastercard/etc.), and processor markup (the processor's margin). Interchange and assessments are set by the card networks and are largely non-negotiable; markup is the layer where processors compete and where merchants can shop around.

• Interchange: typically the largest component, often in the 1.5%–2.5% range depending on card type
• Assessments: a smaller network fee, usually a fraction of a percent
• Markup: the processor's fee, which varies most between providers

Why rates vary by card and business type

Rewards cards, corporate cards, and card-not-present transactions typically carry higher interchange than basic debit or in-person swipes, because issuers price for higher risk or richer rewards funding. A business with a customer base heavy in rewards or corporate cards will usually see a higher blended rate than one with mostly basic debit cards, even with an identical pricing plan.

A simplified example

Consider a $50 in-person purchase. Interchange might run roughly $0.90–$1.25 (about 1.8%–2.5%), assessments a few cents, and processor markup another small amount — together landing the total fee somewhere in a typical 2%–3.5% range depending on pricing model. These figures are illustrative only; your actual mix depends on card types, ticket size, and how you accept payment.

Flat-rate vs. interchange-plus vs. zero-fee pricing

Flat-rate pricing bundles all three layers into one simple percentage, which is predictable but can overcharge on lower-cost card types. Interchange-plus passes through actual interchange plus a fixed markup, which is more transparent but variable. A zero-fee (cash discount) program instead offsets the total cost at checkout rather than deducting it from deposits — see our zero-fee guide for how that compares.

How to estimate your own cost

The most reliable way to know your real cost is to review a recent processing statement or run your actual monthly card volume through a savings calculator, since blended rates depend heavily on your specific card mix and ticket sizes rather than any single published number.