What is APR (Annual Percentage Rate)
APR (Annual Percentage Rate) is the annualized cost of borrowing expressed as a percentage, including both the interest rate and most lender fees — making it a more complete comparison tool than the interest rate alone.
APR, or Annual Percentage Rate, is the yearly cost of borrowing money expressed as a percentage. Unlike a simple interest rate, APR includes not just the interest charged but also most fees and costs associated with the loan, giving borrowers a more complete and comparable measure of what they'll actually pay.
APR is required by federal law (under the Truth in Lending Act) to be disclosed on all consumer loans and credit cards, allowing you to make apples-to-apples comparisons between competing offers.
APR vs. Interest Rate
| Interest Rate | APR | |
|---|---|---|
| What it includes | Interest only | Interest + most fees |
| Usefulness | Shows base cost | Shows true total cost |
| Mortgage example | 6.75% | 6.98% (includes origination fees) |
For most loans, APR will be slightly higher than the stated interest rate because it factors in upfront costs. The gap is largest on short-term loans with significant fees and smallest on long-term loans like 30-year mortgages.
APR on Credit Cards
Credit cards advertise APR as the rate charged on carried balances. Key distinctions:
- Purchase APR — Rate applied to unpaid balances from purchases
- Balance transfer APR — Often promotional (0% for 12–21 months) to attract new customers
- Cash advance APR — Almost always higher than purchase APR; begins accruing immediately
- Penalty APR — Can spike to 29.99% if you miss payments
A credit card with a 22% APR that compounds daily effectively charges slightly more than 22% on an annualized basis — this is called the APY (Annual Percentage Yield). When comparing credit card costs, knowing the APR helps, but the best strategy is always paying the balance in full each month so interest never accrues.
APR on Mortgages
Mortgage APR includes:
- The base interest rate
- Origination points
- Mortgage broker fees
- Most closing costs
When comparing mortgage offers, looking at APR rather than just the interest rate ensures you're accounting for upfront lender costs. Two mortgages with identical 6.75% rates could have APRs of 6.85% and 7.10% if one charges significantly higher origination fees.
How APR Relates to Monthly Payments
For a fixed loan (auto, mortgage, personal loan), the monthly payment is determined by the principal, the interest rate, and the loan term — not directly by the APR (APR includes fees, which affect cost but not always the scheduled payment). The APR helps you evaluate the all-in cost; an amortization schedule shows you exactly how each payment is divided between principal and interest.
The Impact of APR on High-Interest Debt
The urgency of paying off high-APR debt can't be overstated. A $10,000 credit card balance at 24% APR, with minimum payments only, can take over 20 years to pay off and cost more than $15,000 in interest — more than 150% of the original balance. This is compound interest working against you.
NerdWallet and Bankrate both offer free debt payoff calculators that show the real cost of carrying balances at various APRs — useful tools for understanding which debts to prioritize paying down first.
APR and Your Credit Score
Your credit score directly affects the APR you're offered on most loan types. Borrowers with scores above 740 typically receive significantly lower APRs than those in the 620–670 range. On a $30,000 auto loan over 5 years, a 2-point APR difference can mean $1,500+ more paid in interest over the life of the loan.