How Does Credit Card Processing Work?

3 Min Read | Last updated: July 23, 2026

A woman stands in front of a store, holding a credit card, contemplating her purchase and the payment process involved.

This article contains general information and is not intended to provide information that is specific to American Express products and services. Similar products and services offered by different companies will have different features and you should always read about product details before acquiring any financial product.

Learn how credit card processing works. See what's involved and learn what happens behind the scenes within just seconds of making your transaction.

At-A-Glance

Credit card processing involves verifying your card information and sending your money through a payment network to your merchant’s bank account.
Credit card processing companies charge businesses fees for authorizing, authenticating, and settling transactions.
The cardholder doesn’t usually pay processing fees, but businesses may have card payment minimums or a cash-only policy to offset the cost.

It can take seconds to pay by credit card, and it seems so simple: you swipe or tap, the transaction appears on your account as pending, and then the payment posts after a few business days. But how does credit card processing actually work? Here’s a behind-the-scenes look at what goes on every time you make a purchase with your credit card.

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What Are The Steps of Credit Card Processing?

When you use your credit card to make a purchase, your money flows through your credit card issuer’s network and a series of bank accounts before it’s delivered. A credit card processor makes this seamless electronic journey from you, the cardholder, to the merchant possible.

Here’s a breakdown of the general process:

You make a purchase with your card.
The credit card processor moves the payment through your credit card’s network.
The payment is sent to the credit card’s issuing bank.
The payment flows back through the card network to the merchant’s service account.
The money is deposited into the merchant’s bank account.

How Do Credit Card Processors Work?

Credit card processing companies charge fees to deliver your money. Those processing fees typically range from 1.5% to 3.5% of the purchase price, and they’re the cut these companies take for providing the hardware and software needed to process transactions.¹ Other fees can apply—primarily to cover fraud protection and network maintenance—but that money may go to the payment network or the banks involved.

Card processors handle these delivery elements, specifically:

Authorization:The processor verifies your card, making sure it’s active and you have the funds or credit to cover the transaction.
Authentication:The processor waits for you to verify that you’re the card's owner and user, perhaps by confirming your ZIP code or using facial recognition in your mobile payment app.
Settlement:The processor finalizes the transfer to the merchant, typically within 1-3 business days of your transaction.²

Frequently Asked Questions

The business you’re buying from typically absorbs the processing fees, but those fees can considerably impact their profits. So merchants may enforce card payment minimums—no more than $10—or increase their prices.³ But some businesses may try to sidestep the fees altogether and go cash-only.

If you’re a consumer, you already do. But if card minimums bother you, you can get into the habit of using cash. You can also use your debit card (since they tend to have lower processing fees), or plan to spend more than your merchant’s minimum.⁴

The Takeaway

Credit card processing involves verifying your identity and your card, routing your payment through the payment network, and delivering it to the merchant’s bank account. Card processing companies charge your merchant fees to perform this process safely and seamlessly. The business you’re buying from typically handles those fees—not you—but you may see merchants impose card payment minimums or go cash only to help reduce the cost.

¹ “How do credit card processing fees work?,” Yahoo! Finance

² “7 best credit card processing companies,” CNBC Select

^3,4 “The Hidden Cost of Convenience: Credit Card Processing Fees and Their Impact on Consumers,” NASDAQ

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Megan Doyle is a business technology writer and researcher whose work focuses on financial services and cross-cultural diversity and inclusion.

All Credit Intel content is written by freelance authors and commissioned and paid for by American Express.

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