Credit card companies usually make money from interest, merchant fees and some cardholder fees. Even when cards offer grace periods, rewards and 0% offers, the business can still make money.
Let’s take a closer look at how it all works.
Interest and Balances
For credit card issuers, interest is often one of the biggest parts of the business. When a person carries a balance past the due date, the issuer can charge interest based on the annual percentage rate, or APR.
If you pay the full statement balance each month, you may avoid interest on purchases. So, a person can use a card often and still never pay interest.
That is why interest is only part of the answer. Some people carry balances for years. Others pay in full each month.
Merchant Fees
Each credit card purchase involves several parties, and each party may receive a portion of the transaction fee. Merchants accept credit cards because they make purchases easier for customers, but processing those payments comes at a cost.
In a common payment system, the merchant’s payment processor — known as the acquirer — pays an interchange fee to the card issuer, which is the bank that issued the customer’s credit card.
The card network, such as Visa or Mastercard, also charges its own processing fee.
Cardholder Fees
Fees are another source of income, but not every card charges the same types of fees. For example, some cards have annual fees while others do not.
Some accounts can also trigger late fees, cash advance fees, foreign transaction fees or balance transfer fees.
Many fees apply only in certain cases. And cards may not charge specific types of fees at all.
Paying in Full and 0% Offers
A common question is whether companies still profit when you never carry a balance. The answer is often “yes.”
A card can still bring in merchant-fee income. Some cards may also charge annual fees that bring in income.
That’s also why 0% offers are not the same as zero income for the credit card company. The issuer may still earn money while you spend. It may also earn fee income or later interest if a balance remains after the promotion ends.
Who Gets Paid?
A simple way to picture who gets paid is to follow the payment:
- The cardholder (the person with the credit card) buys something.
- The merchant (the store) takes the card.
- The issuer (the bank or company that gave the person the credit card) fronts the money on the lending side.
- The network (the payment system connecting everything, such as Visa or Mastercard) routes and settles the payment.
If the cardholder carries a balance from month to month, that individual pays interest. The cardholder might also pay annual fees, late fees, cash advance fees and other charges.
The merchant pays a credit card processing fee to accept the card. That fee is usually shared among the issuer, the payment processor and the network.
What Makes the Most Money?
When people ask what credit card companies make the most money from, the answer is usually interest from revolving balances. That applies more to card issuers than payment networks.
The Federal Reserve found that the credit function of credit cards made up about 80% of card profitability in the Fed’s dataset. Fees, especially late fees, made up much of the rest.
The transaction side was slightly negative because rewards and other transaction costs were higher than interchange income.
That helps explain why rewards can look generous while credit card interest rates stay high. Issuers may earn money from card use, but they also have to cover rewards, funding costs, fraud, collections and losses when cardholders do not repay.
When People Don’t Pay
Lenders expect that some borrowers will not repay their credit card debt. The Federal Reserve’s charge-off rate for credit cards at commercial banks was 3.84% in the first quarter of 2026.
When a lender writes off a debt, it usually means the lender no longer expects to collect it and records it as a loss for accounting purposes. That does not automatically mean the consumer no longer owes the debt.
Debt cancellation is different from a write-off. If a lender forgives or cancels a debt, the borrower may receive a Form 1099-C for tax reporting purposes.
In other words, a write-off mainly affects the lender’s accounting, while debt cancellation can create tax consequences for the borrower.
Understanding Credit Card Company Revenue
How credit card debt works is easier to judge once you know where the money comes from. Credit card companies don’t earn money solely from people who miss payments or carry balances for a long time.
Paying in full doesn’t always mean the company earned nothing from your account. Merchant fees may still move through the system, and that helps explain why rewards, promos and grace periods can exist alongside profitable card programs.
