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APR Explained

The plain answer

Section titled “The plain answer”

Annual percentage rate, or APR, is a standardized yearly cost measure for borrowing. It helps you compare offers by expressing certain interest charges and fees as an annual percentage.

APR is not identical to the interest rate in every product. The interest rate describes the charge for borrowing the principal. APR may include certain additional costs, depending on the product and disclosure rules.

How it actually works

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For many installment loans, APR combines the interest rate with certain finance charges and expresses the result as a yearly rate. That can make an offer with fees look more expensive than its interest rate alone suggests.

Credit card APR works differently. It usually describes the annualized rate applied to a balance and may not include fees such as annual fees or late fees. A card can also have separate APRs for purchases, balance transfers, cash advances, and penalties.

APR does not tell you the exact dollar cost by itself. Your balance, repayment timing, loan term, compounding method, fees, and payment behavior determine what you actually pay.

What this means for you

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Use APR to compare similar products with similar terms. Also compare the required payment, total amount repaid, fees, rate type, and payoff rules.

For credit cards, check which APR applies to each type of transaction and whether a promotional APR expires. For installment loans, ask whether the APR assumes you keep the loan for its full term. Paying a loan off early can change how much value you receive from upfront fees.

Common mistakes

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  • Assuming APR and interest rate always mean the same thing.
  • Comparing APRs for loans with very different terms without checking total repayment.
  • Assuming every possible fee is included in APR.
  • Ignoring when a promotional APR ends.
  • Looking at a low monthly payment without checking how long payments continue.
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Educational content, not personalized financial, tax, or legal advice. No affiliate relationships. Figures are for tax year 2026 and change annually.Read the full disclaimer.