Bank APY is the yearly rate of return you earn on money you deposit, including compound interest
APY stands for Annual Percentage Yield. It is the percentage of your deposit balance that a bank pays you each year, calculated to include the effect of compound interest — meaning you earn interest on your interest. If you deposit $1,000 in a savings account with 4.50% APY, you will earn roughly $45 in the first year (though the exact amount depends on how often the bank compounds interest and when you make deposits or withdrawals).
APY is different from APR (Annual Percentage Rate), which is what you pay on borrowed money like credit cards or loans. With savings, you want a high APY. With debt, you want a low APR.
Banks set their APY rates based on what the Federal Reserve does with interest rates. When the Fed raises rates, banks typically raise APY on savings accounts, money market accounts, and certificates of deposit (CDs). When the Fed cuts rates, banks usually lower APY. The rate you see advertised is not locked in forever — it can change at any time, and banks often lower rates when competition decreases.
Key Takeaways
- APY includes the effect of compound interest, so you earn returns on money that was itself earned as interest.
- The APY rate a bank offers can change without notice, especially when Federal Reserve rates move.
- High-yield savings accounts and money market accounts typically offer higher APY than traditional savings accounts at the same bank.
- The longer money sits untouched in a CD, the higher the APY usually is, because the bank locks in your deposit for a set time.
How compound interest makes APY different from a simple interest rate
A simple interest rate would pay you the same amount each year on your original deposit. APY accounts for compounding — the bank adds earned interest back into your account, and then pays you interest on that larger balance in the next period.
Banks compound interest on different schedules: daily, monthly, or quarterly. Daily compounding is best for you because interest gets added to your balance more often, so you earn interest on interest more frequently. A savings account with 4.50% APY compounded daily will earn you slightly more than one with 4.50% APY compounded monthly, even though the stated rate is the same.
Over long periods, compounding makes a real difference. $10,000 at 4.50% APY compounded daily will grow to roughly $10,461 after one year. The same $10,000 at a simple 4.50% interest rate (no compounding) would grow to only $10,450. The difference widens the longer the money sits.
Where to find the highest APY rates
Traditional banks — the kind with physical branches — usually offer lower APY than online banks. A major national bank might offer 0.01% APY on a regular savings account, while an online bank offers 4.50% on the same type of account. The difference exists because online banks have lower overhead costs and compete harder for deposits.
High-yield savings accounts and money market accounts at online banks currently offer the highest APY for money you can access quickly. Certificates of deposit (CDs) offer even higher rates, but you must leave the money untouched for a set period — typically three months to five years. If you withdraw early, you pay a penalty that can wipe out months of interest.
Credit unions sometimes offer competitive APY rates, especially on savings accounts for members who meet certain requirements like maintaining a minimum balance or setting up direct deposit. Check your local credit union's rates against online banks before deciding.
How APY changes when the Federal Reserve moves rates
The Federal Reserve does not set APY directly, but its decisions drive the market. When the Fed raises its benchmark interest rate, banks have more incentive to attract deposits, so they raise APY on savings products. When the Fed cuts rates, banks lower APY because they need fewer deposits.
The lag between a Fed move and a bank's response varies. Some online banks raise APY within days of a Fed increase. Traditional banks may take weeks or never raise rates at all if they already have enough deposits. When the Fed cuts rates, banks usually lower APY much faster — sometimes within hours.
This means the APY you see advertised today may not be the rate you earn next month. Read the terms carefully: most savings accounts and money market accounts have variable APY, meaning the bank can change it without notice. CDs lock in a fixed rate for the term, so you know exactly what you will earn.
What APY means for different account types
A regular savings account at a traditional bank typically earns 0.01% to 0.05% APY. You can deposit and withdraw anytime, but the rate is very low because the bank does not need to compete for your money.
A high-yield savings account at an online bank earns 4.00% to 5.00% APY (rates vary by bank and change frequently). You can still withdraw anytime, but there may be limits on how many withdrawals you can make per month without a fee.
A money market account is a hybrid: it earns higher APY than a regular savings account (usually 4.00% to 5.00%) and often comes with a debit card or checks, but may require a higher minimum balance.
A certificate of deposit (CD) locks your money away for a set term — three months, six months, one year, three years, or five years. The longer the term, the higher the APY. A one-year CD might earn 4.75% APY, while a five-year CD might earn 5.00% APY. If you withdraw before the term ends, you pay an early withdrawal penalty.
Why banks advertise APY instead of a simple interest rate
Banks use APY because it is the honest way to show what you will actually earn. A simple interest rate does not account for compounding, so it would understate your real return. Federal law requires banks to disclose APY prominently so you can compare accounts fairly.
That said, APY is still just a snapshot. It tells you the rate today, not what you will earn over time if rates change. If you open a high-yield savings account at 5.00% APY and the Fed cuts rates three months later, your bank may lower APY to 4.50%. You do not get to keep the original 5.00% rate unless you lock it in with a CD.
How to use APY to compare savings accounts
When comparing two savings accounts, look at the APY first — it is the single most important number. A high-yield account at 4.75% APY will earn you far more than a traditional bank account at 0.05% APY, even if both require the same minimum balance.
Check whether the APY is variable or fixed. Variable rates can drop anytime. Fixed rates (like those on CDs) stay the same for the full term. If you think rates might fall, locking in a CD now protects you. If you think rates might rise, a variable-rate savings account lets you benefit from the increase.
Read the fine print for withdrawal limits, minimum balance requirements, and monthly fees. A 5.00% APY account with a $25 monthly fee and a $10,000 minimum balance may earn you less than a 4.50% APY account with no fees and no minimum.
Frequently Asked Questions
Is APY the same as interest rate?
No. APY includes compound interest, so it shows your true yearly return. A simple interest rate does not account for compounding. Banks must show you APY so you can compare accounts fairly.
Can a bank lower my APY without asking me?
Yes, if your account has variable APY. The bank can lower it anytime, though most give notice. CDs have fixed APY for the full term, so your rate cannot change. Check your account terms to see whether your APY is variable or fixed.
What is a good APY for a savings account right now?
APY changes constantly based on Federal Reserve decisions and bank competition. High-yield savings accounts at online banks currently range from 4.00% to 5.00%, while traditional banks offer much less. Compare current rates across banks before opening an account.
Do I pay taxes on APY earnings?
Yes. Interest earned on savings accounts is taxable income. Your bank will send you a 1099-INT form at tax time if you earned $10 or more in interest during the year. You must report this on your tax return.
What happens to my APY if the Federal Reserve cuts rates?
Banks usually lower APY on variable-rate accounts within days or weeks of a Fed rate cut. If you have a CD, your rate stays locked in for the full term. If you have a savings account, your APY will likely drop.