Financial Readiness
APY is what you earn. APR is what you pay. Mixing them up can cost you.

The 2022 Air Force Distinguished Credit Union Service Award presentation at Wright-Patterson AFB. U.S. Air Force photo by Austin Smith, DVIDS (public domain).
APY stands for annual percentage yield. It is what you earn in a year on savings, including compounding. APR stands for annual percentage rate. It is the yearly cost to borrow, including certain fees.
Here is the whole rule. Want a higher APY when you save. Want a lower APR when you borrow. Same idea, two opposite sides.
Two rates, two jobs. One measures what you earn on savings. The other measures what you pay to borrow. Compare each one only against its own kind.
APY, what you earn
APR, what you pay
The same percentage helps you or hurts you, depending on the side.
Source: CFPB
APY is the annual percentage yield. It tells you the total interest you earn on a deposit in a year, and it counts compounding, which is interest earning more interest. Because it includes compounding, APY is a little higher than the plain interest rate on the same account. The Truth in Savings Act makes banks and credit unions disclose APY, so you can compare savings accounts, money market accounts, and CDs on equal footing.
APR is the annual percentage rate. It is the yearly cost to borrow, written as a percentage. APR is the interest rate plus certain fees, so it can be higher than the quoted interest rate on a loan. On most credit cards, the purchase APR and the interest rate are the same number. Lenders must show the APR before you sign, so you can compare loans side by side.
The split is direction. One rate you want to grow, the APY on your savings. One rate you want to shrink, the APR on your debt. A higher APY on an emergency fund helps you. A higher APR on a car loan or a payday product costs you every month. So check which side you are on before you decide if a bigger number is good or bad. This matters even more in uniform.
High-cost lenders cluster near bases for a reason. Knowing the rate, and your protection, keeps a routine purchase from costing you months of pay.
36%
the Military Lending Act caps the Military APR (MAPR) on most consumer loans to active-duty members and covered dependents.
Read the rate
Read the APR before you borrow.
Source: CFPB
You do not have to sort this out alone. Every active-duty, Guard, and reserve member, and their family, can talk with a free Personal Financial Counselor about rates and borrowing. Reach a counselor through Military OneSource, your installation Personal Financial Manager, or the DoD Office of Financial Readiness (FINRED). For plain answers on accounts and rates, use Ask CFPB. To learn how deposit accounts and insurance work, see the FDIC Consumer Resource Center. The links are in Sources below.
Is a higher number better?
It depends on the side. A higher APY on savings is good for you. A higher APR on a loan costs you more.
Why is APR sometimes higher than the interest rate?
Because APR can include certain fees on top of the interest rate.
Do credit cards show APY?
No. Cards quote APR. On most cards you can avoid interest on purchases by paying the statement balance in full by the due date.