# What Is Interchange in Payments?

Source: https://payneteasy.com/glossary/interchange-in-payments

_Interchange is the fee an acquirer pays the card issuer on a card transaction. Learn who pays it, why rates vary, and how it affects merchants._

Table of contents

1. [Who pays interchange?](#who-pays-interchange)
2. [Why does interchange vary?](#why-does-interchange-vary)
3. [Why does interchange matter for merchants?](#why-does-interchange-matter-for-merchants)
4. [Seeing interchange clearly in processing](#seeing-interchange-clearly-in-processing)
5. [FAQ](#frequently-asked-questions)

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Interchange is a core fee in card payment processing. It is the fee paid by the acquirer — the merchant's bank or payment provider — to the issuer, which is the cardholder's bank, on a card transaction. In practice, interchange is one of the main cost components behind the price merchants pay to accept card payments.

Put simply, interchange is the interbank cost built into most four-party card payments. The card networks, such as Visa and Mastercard, publish interchange rate tables, while in some markets those rates are capped by regulation. The merchant does not usually pay interchange as a separate invoice line to the issuer. Instead, the cost is passed through by the acquirer or PSP as part of the merchant's overall processing fee.

## Who pays interchange?

On a typical card purchase, the acquirer pays the interchange fee to the issuer. The acquirer then recovers that cost from the merchant through the processing rate or merchant discount rate.

Card networks do not keep the interchange fee itself. They set or publish the relevant rate tables and operate the scheme rules, while charging separate scheme fees for access to their network. For the merchant, the total cost of card acceptance usually includes three main parts: interchange, scheme fees, and the acquirer or PSP margin. This is often called the Interchange++ or IC++ pricing model when those components are shown separately.

## Why does interchange vary?

Interchange is not a single flat rate. It changes depending on the card type, transaction type, merchant category, and region.

Debit cards often have different rates from credit cards. Consumer cards are priced differently from commercial or corporate cards. Card-present transactions, where the card is used in person, usually carry a different risk profile from card-not-present payments, such as online checkout. The merchant category code, domestic or cross-border setup, card scheme, and local regulation can also change the final rate.

That is why two merchants with the same sales volume can still pay very different effective card acceptance costs.

## Why does interchange matter for merchants?

Interchange matters because it is usually one of the largest parts of card processing fees. Even when a merchant sees only one blended rate, interchange is still included inside that price.

The key question is not only how much interchange costs, but how clearly it is shown. Under interchange-plus or IC++ pricing, interchange is passed through with scheme fees and a visible acquirer or PSP margin. Under blended pricing, those components are combined into one rate, which is simpler to read but less transparent.

For merchants that process high volumes, small differences in card mix, region, routing, or pricing model can have a meaningful impact on margin.

## Seeing interchange clearly in processing

Interchange itself is usually set by the card networks or limited by regulation, so merchants cannot simply negotiate it away. What they can control is visibility, routing strategy, and the commercial model used by their acquirer or PSP.

A payment platform with clear reporting can help merchants understand where transaction costs come from, how different routes perform, and how the overall cost of acceptance is structured. Payneteasy supports payment processing with smart routing across acquirers and payment methods, helping merchants review transaction performance, routing options, and fee structure more clearly.

## Frequently Asked Questions

### What is interchange in simple terms?

Interchange is the fee paid by the acquirer — the merchant's bank or payment provider — to the issuer, which is the cardholder's bank, on most four-party card payments. Merchants usually see this cost passed through as part of their processing fee or merchant discount rate.

### Who sets interchange rates?

Card networks such as Visa and Mastercard publish interchange rate tables. Individual banks generally do not set a separate interchange rate for each merchant transaction. In some regions, regulators also cap consumer-card interchange rates, for example in the EU and UK.

### Why does interchange vary between transactions?

Interchange varies by card type, transaction channel, merchant category, region, and sometimes by whether the transaction is domestic or cross-border. Debit and credit cards can have different rates, consumer and commercial cards are treated differently, and online card-not-present payments often carry a different risk profile from in-person payments.

### What is the difference between interchange-plus and blended pricing?

Interchange-plus pricing passes interchange through with other fee components shown separately, usually with a visible acquirer or PSP margin added on top. Blended pricing combines interchange, scheme fees, and provider margin into one single rate, which is simpler but less transparent.