Why Is Credit Card Interest so High?

Credit cards are expensive to use, especially if you carry a balance and have to pay interest.

The average unsecured credit card interest rate for all borrowers was 21% APR at the end of the first quarter of 2026, according to the Federal Reserve. Some cards might charge even higher interest rates, depending on a borrower’s credit history or credit score.

The interest rate you pay on your credit card isn’t random. These are the hidden economics behind a credit card’s 21% APR.

Why is credit card interest so high?

A credit card is more than just a way to pay. It’s a financial product that combines lending, payment processing and risk management. Then, there’s everything else that you think of about a credit card: customer service, fraud protection and, with some credit cards, rewards programs.

Banks and lenders have to account for all of these costs, plus the losses from other borrowers, and your credit card’s interest rate helps pay for all of it.

Think of a credit card APR as the combination of three parts: the lender’s cost of money, the risk that some borrowers won’t repay their bills and the operating expenses required to run a credit card business.

Where do lenders get the money they lend?

Before a bank or lender can make a loan, they first need to get the capital or money to lend out.

A big bank might accept deposits from consumers to fund the credit cards and other loans that they offer. In this case, the interest a bank account customer earns on their deposits is a part of the lender’s cost of money.

A non-bank lender can also get money to lend to consumers from investors or other financial institutions.

The lender’s funding rate is like a baseline for all of their loans. When market interest rates go up, borrowing costs across the economy tend to increase, too.

What is credit risk?

Credit risk is the possibility that a borrower doesn’t repay what they owe.

When a lender approves someone for a credit card, they don’t know exactly who will pay their bill each month and who won’t, but they have a general sense. A credit card issuer can use tools like your credit score, income, assets and other data to estimate this risk, but uncertainty remains.

Credit cards are typically unsecured loans. Many consumers with reasonable credit histories and credit scores can get a credit card without having to put a deposit down before they start spending.

Lenders take on more risk with credit cards and unsecured loans. Unlike a car loan or a mortgage, there is no vehicle or home backing the repayment of the credit card debt. If a borrower stops making payments, there is no underlying collateral or asset a lender can sell to get back their money. A lender would have to try to seek legal action to get repaid in this instance.

Because of this, a lender usually charges a higher interest rate on credit cards than they would for a home loan, home equity line of credit, car loan or other secured loan.

Some cardholders pay on time every month, but not everyone does. The borrowers who stop making payments or make them only periodically are one of the biggest costs for a credit card issuer. As a result, losses from nonpayments, slow payments or defaults are one of the biggest factors of any loan’s interest rate.

How credit card companies cover their costs

When you buy something for $100 using your credit card, the store doesn’t receive the full $100. Some small amount of each transaction goes to pay the payment processor, card network (American Express, Mastercard or Visa), payment terminal provider and your credit card issuer.

The credit card issuer uses their portion of each transaction to help cover their operations. These costs include everything from compliance, customer service, fraud prevention, marketing and credit card perks like cash back, rewards points or other benefits.

All of these costs are built into the economics of credit cards and contribute to the interest rates charged on balances.

The bottom line

Credit card interest rates are high because credit cards are typically more risky than secured loans. Interest rates need to cover the lender’s cost of money, expected losses from non-payment and running a rewards program and payment infrastructure.

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This post is for informational purposes only and does not provide any financial, investment or tax advice. The information presented may not be suitable for your individual circumstances. Before making any financial decisions, consider consulting a qualified professional who can provide advice based on your specific situation.