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Merchant services glossary

Interchange

Also called: Interchange fee, Wholesale rate

Quick definition: The wholesale fee a card-issuing bank charges every time their cardholder makes a purchase. It's roughly 70% of your total processing cost and not negotiable.

Editorially reviewedReviewed by Sam Patel, Merchant services editorUpdated April 1, 2026How we make moneyMethodologyAdvertiser disclosure

In plain English

Every credit card transaction has three fee layers: interchange (paid to the card-issuing bank), assessments (paid to Visa/Mastercard/Discover), and processor markup (paid to your merchant services provider).

Interchange is set by the card networks — Visa publishes their rate sheet quarterly — and is the same regardless of which processor you use. The reason your processing bill differs from your neighbor's is almost entirely markup, the only part anyone can compete on.

Example

A customer buys $100 of dinner with a Chase Visa rewards card. Interchange might be 1.65% + $0.10 = $1.75. Your processor passes that through and adds their markup (say 0.30% + $0.10 = $0.40). Visa gets a small assessment (~0.14% = $0.14). Total fee: $2.29.

Why it matters for your bill

If a sales rep promises to "lower your interchange," walk away. The only honest savings come from lower markup, smarter card routing (debit vs credit), or qualifying for lower interchange tiers (e.g., level-2/3 data for B2B).

FAQ

No. Interchange is set by Visa and Mastercard. Processors can only lower their own markup.
How we research & score
  • Definitions reviewed against current card-network and PCI SSC documentation.
  • Updated when card-network rules or fee structures change.
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