What Is APR? How Annual Percentage Rate Works on Loans and Cards

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APR shows up on every loan offer, credit card application and mortgage disclosure — but many people are not sure what it includes or how it differs from the interest rate. Understanding APR is one of the simplest ways to avoid overpaying when you borrow.

APR in one sentence

APR, or annual percentage rate, is the yearly cost of borrowing money, expressed as a percentage. Federal law — the Truth in Lending Act and its implementing rule, Regulation Z — requires lenders to disclose it so consumers can compare credit offers on a consistent basis.

APR vs. interest rate

The interest rate is the percentage charged on the money you borrow. The APR starts with the interest rate and, for many loans, adds certain finance charges such as origination fees, points and some closing costs, then expresses the total as a yearly rate.

Because APR includes those costs, it is usually equal to or higher than the interest rate.

Example: two personal loan offers

Offer A advertises a lower interest rate, but its fee makes it more expensive. The APR reveals the true comparison.

How APR works on different products

Credit cards

For credit cards, the APR is essentially the interest rate on balances you carry. Most cards have several APRs:

• Purchase APR — for everyday purchases.
• Balance transfer APR — sometimes 0% for an introductory period.
• Cash advance APR — usually higher, with no grace period.
• Penalty APR — may apply after a late payment.

Card APRs are usually variable, tied to an index such as the prime rate plus a margin. When the index moves, your APR moves.

Crucially, if you pay your full statement balance by the due date each month, most cards charge no interest on new purchases thanks to the grace period. The APR only matters when you carry a balance. See how credit card interest works.

Personal loans

Personal loan APRs include the interest rate plus origination fees. Many lenders quote an APR range, and your actual APR depends on your credit, income and debts. Compare offers with the loan calculator.

Auto loans

Auto loan APRs can include certain finance charges. Dealer-arranged financing may include a markup over the rate the lender offered, which is one reason to get preapproved elsewhere first. See how auto loans work.

Mortgages

A mortgage’s APR includes the interest rate plus costs like discount points, origination charges and mortgage insurance. It appears on page 3 of your Loan Estimate. Because it spreads upfront costs over the full term, APR is most useful when you expect to keep the loan for a long time; if you plan to sell or refinance within a few years, also compare upfront closing costs directly.

APR vs. APY

• APR is used for borrowing and does not include the effect of compounding within the year.
• APY (annual percentage yield) is used for savings and does include compounding.

A savings account advertising a 4.00% APY earns slightly more than one paying 4.00% interest compounded annually. For a detailed explanation, see what is APY?

Fixed vs. variable APR

• Fixed APR: stays the same for the life of the loan. Common for personal loans, auto loans and fixed-rate mortgages.
• Variable APR: changes with an index. Common for credit cards, HELOCs and adjustable-rate mortgages. Your payment can rise when rates rise.

What affects the APR you are offered

• Credit score and history — the biggest factor in most pricing.
• Debt-to-income ratio.
• Loan term — longer terms can carry higher rates.
• Collateral — secured loans usually have lower APRs.
• Market rates — influenced by the broader interest rate environment.

How to use APR to compare offers

1. Compare the same loan type, amount and term.
2. Use APR as the headline cost — it captures fees the interest rate hides.
3. Then check the total cost — monthly payment × number of payments, plus any fees not in the APR.
4. Read the fine print for prepayment penalties, late fees and whether the rate is fixed or variable.

The bottom line

APR is the price tag on borrowed money. Always compare offers by APR and total cost rather than by monthly payment or advertised interest rate alone — and remember that on a credit card, paying in full each month makes the APR irrelevant. Learn more in our loans hub.

This guide is part of our Loans hub and our complete personal finance guide. Spot an error? Request a correction.