Interchange Fee Calculator

What the issuing bank takes, and what is negotiable.

Break a card fee into interchange, scheme assessment and acquirer margin to see what can actually be negotiated.

Written and maintained by Mohit PatelLast checked August 4, 2026How we build these

Transaction amount

Card type

Scheme assessment

Acquirer margin

Acquirer fixed fee

Processor pricing varies by country, card type and whatever you negotiated, and it changes without much notice. Take the real figures from your own statement. These defaults are a starting point, not your account.

Total cost of acceptance

$2.31

2.89%, of which 2.23% is interchange

Interchange to the issuing bank$1.78

Scheme assessment$0.11

Acquirer margin$0.42

Total$2.31

Interchange is 76.99% of what you pay and goes to the card issuer, not your processor. It is the same for everyone and not negotiable. The same purchase on a regulated debit card would carry $0.25 of interchange instead of $1.78, which is why premium rewards cards are expensive to accept and why some merchants steer to debit.

How the Interchange Fee Calculator works

Most of what you pay to accept a card never reaches your processor. Interchange goes to the bank that issued the customer's card, scheme fees go to Visa or Mastercard, and only the remainder is your acquirer's margin, which is the only part anyone can negotiate.

Also known as: interchange plus calculator · IC++ pricing · interchange rate calculator · card scheme fee breakdown · interchange cost

The calculation itself

Interchange is the fee the acquiring bank pays the issuing bank on each transaction, set by the card scheme rather than by either bank. It is the largest component of card acceptance cost and it is not negotiable by the merchant.

Total cost under interchange plus = interchange + scheme fees + acquirer markup, where only the third is negotiable and the first two pass through at cost.

Running the numbers

A $58 consumer credit card transaction at an interchange rate of 1.80% + $0.10: $1.14. Scheme fees at 0.13%: $0.08. Acquirer markup at 0.35% + $0.10: $0.30. Total $1.52, an effective 2.62%.

The same $58 on a debit card at 0.80% + $0.15 interchange: $0.61 + $0.08 + $0.30 = $0.99, an effective 1.71%.

A premium rewards card at 2.30% + $0.10: $1.43 + $0.08 + $0.30 = $1.81, an effective 3.12%. Same order, same merchant, 82% more expensive because of what the customer pulled out of their wallet.

What gets missed

Interchange is capped by regulation in several regions, the EU and UK cap consumer card interchange at 0.2% for debit and 0.3% for credit, while remaining uncapped in the United States for most cards. The same business can pay four times more per transaction depending on the region.

Rates also depend on how the transaction was processed. Missing data elements, delayed settlement or card-not-present handling can downgrade a transaction to a higher interchange category, and the merchant usually never learns why.

What to do next

Move to interchange plus if volume supports it, so you can see the three components separately. Under flat rate the entire structure is invisible and a debit-heavy customer base subsidises the processor.

Then submit complete transaction data: address verification, order details, customer references for commercial cards. Better data qualifies transactions for lower interchange categories, and on B2B card volume the difference is substantial.

Why the regional difference is so large

European regulation capped interchange in 2015 at 0.2% for consumer debit and 0.3% for consumer credit. The United States capped debit interchange for large issuers under the Durbin Amendment and left credit uncapped.

The practical consequence is that accepting cards in Europe costs a fraction of what it costs in the United States for the same transaction, and that US merchants fund a rewards ecosystem that European merchants largely do not.

For a business selling in both, that means payment cost is a genuine geographic variable in the margin model rather than a constant. Modelling a single blended rate across both regions understates the US cost and overstates the European one, and on a thin-margin product that difference can decide whether a market is worth entering.

Commercial and purchasing cards carry higher interchange than consumer cards, but qualify for lower rates when the transaction includes enhanced data: line item detail, tax amounts, customer codes.

For a business with substantial B2B card volume, submitting Level 2 and Level 3 data is a straightforward integration change that reduces interchange meaningfully on exactly the transactions that cost the most.

Where to go next

The Interchange Fee question rarely arrives on its own. These are the ones that usually come with it:

Merchant Discount Rate Calculator — How much of your MDR is actually negotiable.
Credit Card Processing Fee Calculator — Effective rate, not the headline rate.
Adyen Fee Calculator — Interchange plus plus, and when it wins.
Etsy Fee Calculator — Every Etsy fee on one sale, itemised.

Not financial advice. Marketplace fees change, and they vary by country, plan and seller status. Every rate here is an editable default, not a quoted price, check the platform's current fee schedule before you price a product against it. This is not tax or business advice.

Frequently asked questions

What is interchange?

The fee the acquiring bank pays the issuing bank on every card transaction. It is set by the card networks, published, identical for everyone, and not negotiable. It typically makes up 70% to 80% of what a small merchant pays.

Why do rewards cards cost more?

Because the rewards are funded by interchange. A premium travel card carries interchange well above a basic debit card, and the merchant pays for the points the customer earns.

What is regulated debit?

In the US, debit interchange for large issuers is capped by regulation at a fixed amount plus a small percentage, far below credit card rates. In the EU and UK, both debit and credit consumer interchange are capped, which is why European processing rates are so much lower.

What can I actually negotiate?

Only the acquirer margin. Any conversation about the headline rate that ignores the interchange split will go nowhere, because your processor cannot discount money it passes straight through.