Yes, most savings accounts earn interest, but the rate and how often it compounds depends on your bank and the current economic environment

When you deposit money into a savings account, the bank pays you interest — a percentage of your balance that the bank adds to your account at regular intervals. The bank uses your money to lend to other customers and make investments; interest is what they pay you for letting them use it. The amount you earn depends on three things: how much money you have in the account, what interest rate the bank offers, and how often the bank compounds that interest (adds it back into your balance so you earn interest on the interest).

Not all savings accounts earn the same rate. Banks set their own rates based on what the Federal Reserve does with its benchmark interest rate. When the Fed raises rates, banks typically raise savings rates too — sometimes quickly, sometimes slowly. When the Fed cuts rates, savings rates fall. Right now, rates vary widely: some banks offer less than 0.01 percent annual percentage yield (APY), while others offer 4 to 5 percent or higher. The difference between a 0.01 percent account and a 5 percent account is enormous over time, so where you keep your money matters.

Key Takeaways

  • Interest rates on savings accounts are set by individual banks and change based on what the Federal Reserve does with its benchmark rate.
  • APY (annual percentage yield) is the rate you will actually earn in a year, including the effect of compounding, and is what you should compare between banks.
  • High-yield savings accounts at online banks often pay significantly more than traditional bank savings accounts, sometimes 50 to 100 times higher.
  • Interest is usually compounded daily or monthly, meaning you earn interest on your interest, and the more frequently it compounds, the more you earn.
  • You only earn interest on money that stays in the account; withdrawals reduce your balance and the interest you will receive.

How banks calculate and pay interest

Banks calculate interest using your average daily balance — the total amount in your account each day, averaged across the month or quarter. If you have $1,000 in the account for 15 days and $2,000 for the remaining 15 days, your average daily balance is $1,500. The bank then applies the interest rate to that average and divides it by the number of days in the year to figure out what you earn per day.

The frequency of compounding — how often the bank adds interest back into your account — changes how much you actually earn. If interest compounds daily, the bank calculates what you owe each day and adds it to your balance, so the next day you earn interest on a slightly larger amount. If it compounds monthly, you wait 30 days before that interest joins your balance. Daily compounding always earns you more than monthly compounding at the same rate, because you are earning interest on interest more often. Most savings accounts compound daily, though some older accounts or accounts at smaller banks may compound monthly or quarterly.

Banks pay interest on a schedule: some deposit it monthly, some quarterly, some annually. The timing does not change how much you earn over a year — the APY accounts for all of it — but it affects when you see the money in your account. If you need the interest to be available sooner, check the bank's deposit schedule before you open the account.

The difference between APY and interest rate

Banks are required to show you the APY (annual percentage yield), which is the actual rate you will earn in a year after compounding is included. The plain interest rate — sometimes called the nominal rate — does not include compounding, so it is always lower than the APY. If a bank advertises "5 percent APY," that is the real number: you will earn 5 percent of your balance over 12 months, accounting for daily compounding.

When you compare savings accounts, always use APY, never the interest rate alone. Two banks might offer the same interest rate, but if one compounds daily and the other compounds monthly, the daily-compounding account will earn slightly more. The difference is small on low balances but grows as your balance grows. On $10,000 at 4.5 percent APY, daily compounding versus monthly compounding is the difference between earning about $450 and $445 over a year — not huge, but real.

Why rates vary so much between banks

Online banks and credit unions often pay much higher rates than traditional brick-and-mortar banks. An online bank with no physical branches has lower overhead costs — no building leases, no tellers, no branch staff — so it can afford to pay depositors more. A traditional bank with hundreds of branches has those costs built in, so it keeps more of the interest it earns and pays depositors less. This is not unfair; it is just how the economics work. If you want to earn more interest, moving money to an online bank or credit union is usually the simplest way.

Banks also set rates based on how much money they need to attract. During periods when the Fed has raised rates, banks compete aggressively for deposits and offer high rates. When the Fed cuts rates and money is plentiful, banks lower their rates because they do not need to attract as many new deposits. You cannot control this cycle, but you can watch for when rates are high and move your money then, or set up alerts so you know when your current bank drops its rate below what competitors are offering.

How much interest you will actually earn

The amount of interest you earn depends entirely on your balance and the APY. A straightforward way to estimate: multiply your balance by the APY. If you have $5,000 in an account paying 4.5 percent APY, you will earn roughly $225 over a year (before taxes). If the same $5,000 is in an account paying 0.01 percent APY, you will earn about 50 cents.

The longer your money stays in the account, the more interest you earn. If you deposit $5,000 and leave it untouched for a year at 4.5 percent APY, you earn $225. If you withdraw $2,000 after six months, you earn interest only on the remaining $3,000 for the second half of the year, so your total interest is less. This is why savings accounts work best for money you do not plan to touch — the longer it sits, the more it grows.

Interest is taxable income. The bank will send you a 1099-INT form at the end of the year if you earned $10 or more in interest, and you will owe federal income tax on that amount. Some states also tax interest income. This does not change how much interest the bank pays you, but it does reduce what you keep after taxes.

When interest rates change and what it means for you

Banks change their savings rates frequently — sometimes weekly, sometimes monthly. When the Federal Reserve raises its benchmark rate, banks usually raise savings rates within days or weeks. When the Fed cuts rates, banks often cut savings rates more slowly, because they want to keep the deposits they have. This means the best time to lock in a high rate is right after the Fed raises rates, before banks start competing less aggressively.

If your bank drops its rate and you do not like the new number, you can move your money to a different bank. There is no penalty for moving savings between banks — you straightforward withdraw from one and deposit into another. Some people move their savings every few months to chase the highest available rate, though this works best if you have a large balance where the interest difference is meaningful.

Frequently Asked Questions

Do I earn interest on money I just deposited?

Interest accrues from the day the deposit clears, not the day you make it. If you deposit money on a Friday and it clears on Monday, you start earning interest on Monday. The bank will not pay you interest for the weekend days when the money was not yet in your account.

What happens to my interest if I withdraw money before the month ends?

You earn interest only on the money that was actually in the account. If you have $5,000 for 20 days and withdraw $2,000, you earn interest on $5,000 for those 20 days and $3,000 for the remaining days of the month. The bank calculates this using your average daily balance, so partial months are handled automatically.

Can I lose money in a savings account?

No. A savings account is FDIC-insured up to $250,000 per depositor per bank, meaning the federal government guarantees your balance even if the bank fails. You cannot lose your principal, though inflation can reduce what your money can buy if the interest rate is lower than inflation.

Why is my interest so low compared to what the bank advertises?

The advertised rate applies to new money or large balances. If you opened your account years ago, you are probably earning an older, lower rate. Banks often pay new customers a promotional rate and existing customers a lower maintenance rate. Switching to a new bank or asking your current bank to match a competitor's rate can fix this.

Does moving my money between savings accounts hurt my credit?

No. Moving money between your own savings accounts or opening a new savings account does not affect your credit score. Credit scores measure borrowing and repayment, not savings. Banks do a soft inquiry when you open an account, which does not impact your credit.