What your savings account earns depends on the interest rate your bank offers
Your savings account earns money through interest — a percentage of your balance that the bank pays you for letting them use your money. The amount you earn depends almost entirely on the interest rate the bank sets, which varies widely between banks and changes over time.
The interest rate is usually shown as an annual percentage rate, or APY. This tells you what percentage of your account balance you'll earn in a year if you don't add or withdraw money. A bank offering 4.5% APY means that if you keep $1,000 in the account for a full year without touching it, you'll earn about $45 in interest.
The actual dollars you earn are small compared to what you'd earn from stocks or bonds, but savings accounts are safer — the bank guarantees your money and the interest, and the federal government insures deposits up to $250,000 through the FDIC. You're trading higher potential earnings for certainty and access to your cash.
Key Takeaways
- Interest rates on savings accounts vary by bank and change frequently, so comparing rates before opening an account matters.
- APY is the annual percentage rate — the percentage of your balance you'll earn in a year, and it's the number to compare between banks.
- Online banks typically offer higher rates than brick-and-mortar banks because they have lower operating costs.
- The interest you earn is deposited into your account monthly or daily, depending on the bank's compounding schedule.
- Your earnings are taxed as ordinary income, so you'll report the interest on your tax return.
How interest rates differ between banks
Banks set their own interest rates based on what the Federal Reserve does and what competitors offer. Right now, online banks tend to offer higher rates than traditional banks with physical branches — sometimes two or three times higher. This is because online banks don't pay for buildings, tellers, or as much staff, so they pass some of that savings to customers through better rates.
Rates also depend on the type of savings account. A regular savings account usually earns less than a money market account or a certificate of deposit (CD). A CD locks your money away for a set period — three months, one year, five years — and pays you a higher rate in exchange for that commitment. If you withdraw early, you pay a penalty.
The Federal Reserve's interest rate decisions affect what all banks offer. When the Fed raises its rate, banks gradually raise theirs too. When the Fed cuts rates, bank rates fall. This means the rate you see today may be different in three months or six months.
How to calculate what you'll actually earn
The simplest way is to use a calculator, but understanding the math helps you compare banks accurately. Take the APY, multiply it by your account balance, and divide by 12 to get your monthly earnings (assuming the rate stays the same all year).
For example: A $5,000 balance at 4.5% APY earns about $225 per year, or roughly $18.75 per month. At 0.5% APY — what some traditional banks offer — the same $5,000 earns about $25 per year, or about $2 per month.
Most banks compound interest daily or monthly, which means they add the interest you've earned to your balance, and then you earn interest on that interest the next period. This compounds your earnings slightly, but the difference is usually small on savings account balances. The APY already accounts for compounding, so you don't have to calculate it separately.
Where to find current interest rates
Banks publish their rates on their websites, usually on the savings account product page. You can also compare rates across multiple banks on financial websites like Bankrate, DepositAccounts, or the FDIC's own rate search tool. These sites update frequently and let you filter by account type and bank location.
When you compare, make sure you're looking at the same type of account — a regular savings account rate won't match a money market rate. Also check the minimum balance required to earn that rate; some banks only pay the advertised rate if you keep a certain amount in the account.
Don't assume your current bank has the best rate. Many people keep money in accounts earning 0.01% when they could move it to an online bank earning 4% or higher. Moving money takes about five minutes and costs nothing.
What happens to your interest earnings
Interest deposits into your account on a schedule set by the bank — usually monthly or daily. You can withdraw it anytime without penalty, unlike a CD. The interest becomes part of your balance and earns interest itself the next period.
You'll receive a form called a 1099-INT from your bank at the end of the year if you earned $10 or more in interest. You report this amount on your tax return as ordinary income, which means it's taxed at your regular income tax rate. If you earned less than $10, the bank may not send a form, but you still owe tax on the interest.
This is why the actual after-tax earnings are lower than the APY suggests. If you earn $200 in interest and you're in the 22% tax bracket, you'll owe about $44 in taxes, leaving you with about $156 in actual earnings.
Why savings account interest is lower than other investments
Savings accounts are insured and liquid — you can access your money when ready without risk of losing it. Stocks, bonds, and other investments can earn more, but you could lose money if the market drops, and you may have to wait to sell. Banks pay lower interest because they're taking on almost no risk.
Savings accounts are best for money you need to keep safe and accessible — an emergency fund, money for a down payment in the next year or two, or money you're saving for a specific near-term goal. For money you won't need for five or ten years, other investments may make more sense, though that's a decision to make with a financial advisor based on your situation.
How to maximize what your savings earns
First, shop around. The difference between a 0.5% account and a 4.5% account is huge on any balance over a few hundred dollars. Switching takes minutes and costs nothing.
Second, keep your balance as high as possible. Interest compounds on your full balance, so moving money in from other accounts or delaying a withdrawal by a month can add real dollars to your earnings.
Third, consider a CD if you know you won't need the money for a set period. CDs usually pay 0.5% to 1% more than savings accounts, and the rate is locked in, so you know exactly what you'll earn.
Finally, don't chase tiny rate increases by moving money constantly. Banks sometimes offer promotional rates that drop after a few months. Read the fine print before opening an account.
Frequently Asked Questions
Does my savings account earn interest every day?
Most banks calculate interest daily but deposit it monthly. This means interest accrues (builds up) every day based on your balance, but you see it added to your account once a month. Some banks deposit interest more or less frequently — check your account agreement to be sure.
What's the difference between APY and APR?
APY (annual percentage yield) includes compounding and shows what you'll actually earn. APR (annual percentage rate) does not include compounding. For savings accounts, always compare APY to APY, not APR. APR is used for loans and credit cards.
Can I lose money in a savings account?
No. Your balance is insured by the FDIC up to $250,000, and interest is may provide. The only way to have less money is if you withdraw it yourself. The interest rate can drop, but you won't lose what you've already earned.
Is it worth moving my money to a higher-rate account?
Yes, if you have more than a few hundred dollars. Moving $5,000 from a 0.5% account to a 4.5% account earns you an extra $200 per year with no risk or effort. The move itself takes about five minutes and costs nothing.
Do I have to pay taxes on savings account interest?
Yes. Interest is taxed as ordinary income at your regular tax rate. If you earn $200 in interest, you report it on your tax return. Your bank sends you a 1099-INT form if you earn $10 or more in a year.