Guide
Understanding APR vs APY
How APR, APY, and compounding frequency affect loans, savings accounts, and credit cards.
Last updated: 2026-05-22
APR and APY both describe interest, but they are not the same. APR states an annual rate, while APY reflects the effect of compounding.
Understanding the difference helps when comparing savings accounts, loans, credit cards, and investment yield assumptions.
Practical takeaway
Use APY for deposit yield comparisons and APR plus fees for debt comparisons, then compare total dollars over time.
APR states the rate, APY includes compounding
APR is often used for loans and credit cards. APY is common for savings because it reflects the effect of compounding over a year.
The more frequently interest compounds, the more APY can rise above the stated APR.
Use the right rate for the decision
For debt, fees and repayment rules matter alongside APR. For savings, APY is usually the cleaner comparison between deposit accounts.
When in doubt, compare total dollars over time rather than rates alone.
Real-world examples
Convert 5% APR compounded monthly into APY.
Compare a credit card APR with a payoff estimate rather than APY alone.
Practical scenarios
- A saver compares two high-yield accounts with different compounding rules.
- A borrower checks how APR affects credit card payoff time.
Common mistakes
- Comparing APR directly with APY.
- Ignoring compounding frequency.
- Forgetting fees and promotional periods.
Things calculators cannot predict
- Calculators cannot know account rules.
- They cannot include every loan fee automatically.
- They cannot predict rate changes.