Interest on savings accounts comes from the bank paying you a percentage of your balance each month or year

When you deposit money into a savings account, the bank uses that money to lend to other customers or invest it. In return, the bank pays you interest — a small percentage of your balance as compensation for letting them use your money. The amount you earn depends on three things: how much money you have in the account, how long it stays there, and the interest rate the bank offers.

Interest rates vary widely. A savings account at one bank might pay 0.01% annually while another pays 4.5% or higher. That difference matters. On a $10,000 balance, 0.01% earns $1 per year. At 4.5%, you earn $450 per year on the same balance. The bank decides its rate based on what the Federal Reserve does with its own rates, competition from other banks, and how much it needs to attract deposits.

Most banks calculate and deposit interest monthly, though some do it quarterly or annually. You'll see the deposit show up as a credit to your account. Once interest is deposited, it becomes part of your balance and can earn interest itself — this is called compounding.

Key Takeaways

  • Interest rates on savings accounts range from near zero to over 4% depending on the bank and account type, so comparing rates before opening an account can significantly increase your earnings.
  • Online banks typically offer higher rates than traditional brick-and-mortar banks because they have lower overhead costs.
  • High-yield savings accounts and money market accounts pay more interest than standard savings accounts, though they may require higher minimum balances.
  • Interest is usually deposited monthly and becomes part of your balance, so you earn interest on your interest over time.
  • The Federal Reserve's interest rate decisions affect what banks offer, so rates change periodically and are not locked in permanently.

Where to find accounts with higher interest rates

Online banks consistently offer the highest rates because they don't maintain physical branches and have lower operating costs. Banks like Marcus, Ally, American Express Bank, and Discover Bank regularly offer rates between 4% and 5% on standard savings accounts. You can open these accounts entirely online, and your money is insured by the Federal Deposit Insurance Corporation (FDIC) up to $250,000, the same protection you get at a traditional bank.

High-yield savings accounts are the formal name for these higher-rate accounts. They work exactly like regular savings accounts — you deposit money, withdraw when you need it, and earn interest — but the rate is substantially higher. The trade-off is usually a higher minimum balance requirement (often $500 to $2,500) and sometimes a limit on how many withdrawals you can make per month without a fee.

Money market accounts are a hybrid between savings accounts and checking accounts. They typically pay interest rates similar to high-yield savings accounts but also come with a debit card or checkbook so you can access your money more easily. The catch is that they usually require a higher minimum balance — sometimes $2,500 or more — and may charge fees if you fall below it.

Traditional brick-and-mortar banks (Chase, Bank of America, Wells Fargo) usually offer rates well below 1% on standard savings accounts. If you have money sitting in one of these accounts, you're likely earning very little interest. Switching to an online bank or high-yield account at the same institution (if available) can increase your earnings dramatically without moving your money elsewhere.

How to compare rates and understand what you're looking at

Banks advertise their rates as APY, which stands for Annual Percentage Yield. This is the total percentage of your balance you'll earn in a year, including the effect of compounding. When you see "4.5% APY," that means if you keep $1,000 in the account for a full year without touching it, you'll have $1,045 at the end (plus any deposits you make). APY is the number to use when comparing accounts — it's standardized so you're always comparing the same thing.

Rates change frequently. A bank offering 4.5% today might drop to 4.2% next month if the Federal Reserve lowers its rates. Some banks lower rates gradually; others do it all at once. You won't lose the interest you've already earned, but new interest will be calculated at the lower rate going forward. If rates drop significantly, you can move your money to a different bank — there's no penalty for closing a savings account and opening one elsewhere.

Check the rate on the bank's website or call and ask directly. Websites like Bankrate, DepositAccounts, and NerdWallet list current rates from multiple banks side by side, which makes comparison easier. Look at the APY, any minimum balance requirement, and whether there are monthly fees. Some accounts waive fees if you maintain a certain balance or set up direct deposit.

What happens if you withdraw money before interest is paid

If you withdraw money from your savings account, you don't lose the interest you've already earned. Interest that has been deposited into your account is yours to keep. However, if you withdraw before the interest is calculated and deposited for that month, you won't earn interest on the amount you withdrew for that period.

For example, if you have $5,000 in the account on the first of the month and withdraw $2,000 on the 15th, the bank will calculate interest on $5,000 for the first half of the month and $3,000 for the second half. You earn less interest that month because you had less money in the account for part of the time. This is normal and expected — the interest you earn is always based on your actual balance.

Some older savings accounts have limits on how many withdrawals you can make per month (often six) before fees kick in. Most modern accounts, especially online banks, have removed these limits. Check your account terms to see if withdrawal limits explore to you.

The relationship between Federal Reserve rates and what your bank pays

The Federal Reserve (the central bank of the United States) sets a target range for the interest rate that banks charge each other for overnight loans. When the Fed raises this rate, banks have more incentive to offer higher rates on savings accounts to attract deposits. When the Fed lowers its rate, banks typically lower the rates they offer to savers.

The Fed's decisions don't directly set your savings rate — your bank does that. But there's a strong correlation. When the Fed has been raising rates (as it did in 2022 and 2023), savings account rates climbed from near zero to 4% or higher. When the Fed pauses or cuts rates, savings rates typically follow downward, though sometimes with a lag of a few weeks or months.

This means the highest rates available today may not be the highest rates available next year. If you lock in a high rate now, you're protected — the bank can lower your rate going forward, but you won't earn more than what you're currently getting. However, you also won't benefit if rates rise further. Most people keep their money in accounts that allow rate changes because the flexibility to move to a better rate elsewhere is more valuable than being locked in.

How much interest you'll actually earn depends on your balance and how long you keep it there

Interest earnings are calculated on your balance. The larger your balance and the longer you keep it in the account, the more you earn. Here's how the math works: if you have $10,000 in an account paying 4.5% APY, you'll earn approximately $450 in interest over one year (before any taxes). If you have $50,000, you'll earn approximately $2,250.

Compounding means you earn interest on your interest. If the bank deposits your interest monthly, that interest becomes part of your balance and earns interest the next month. Over a year, this compounds to slightly more than straightforward multiplication would suggest, but the difference is small on savings account rates. The real benefit of compounding shows up over many years or with much larger balances.

If you withdraw money partway through the year, your earnings are proportional. Withdraw half your balance after six months, and you'll earn roughly half the annual interest. The bank calculates this automatically — you don't have to do anything.

Taxes on savings account interest

Interest you earn on a savings account is taxable income. At the end of each year, your bank will send you a Form 1099-INT showing how much interest you earned. You report this on your tax return, and you'll owe federal income tax on it (and possibly state income tax, depending on where you live).

The tax rate depends on your overall income and tax bracket. If you're in the 22% federal tax bracket and earn $450 in interest, you'll owe roughly $99 in federal tax on that interest. This is why the real return on your savings is less than the stated APY — the APY is the gross return before taxes.

If you earn less than $10 in interest in a year, the bank may not send you a Form 1099-INT, but you're still technically required to report it. Most people with very small interest earnings don't face issues, but the safest approach is to report all interest income.

Frequently Asked Questions

Can I move my money to a higher-rate account without losing interest I've already earned?

Yes. Interest that has been deposited into your account is yours — you keep it when you close the account and move to another bank. You won't earn interest on the money during the time it's in transit (usually one to three business days), but you don't lose what you've already earned. There's no penalty for closing a savings account.

What's the difference between a savings account and a money market account?

A money market account typically pays higher interest than a standard savings account and gives you a debit card or checkbook to access your money more easily. The trade-off is a higher minimum balance requirement and sometimes monthly fees if your balance drops below the minimum. Both are FDIC-insured up to $250,000.

Will the interest rate I see today stay the same forever?

No. Banks can change the rate they offer on savings accounts at any time. When rates rise, you benefit if you move to a new account with a higher rate. When rates fall, your existing account rate will eventually fall too. You're not locked in, so you can move your money if a better rate becomes available elsewhere.

How often is interest calculated and added to my account?

Most banks calculate and deposit interest monthly, though some do it quarterly or annually. Check your account terms to see the schedule. Once interest is deposited, it becomes part of your balance and earns interest itself the following month.

Do I have to do anything to earn interest, or does it happen automatically?

It happens automatically. Once you open the account and deposit money, the bank calculates and deposits interest on its schedule without any action from you. You don't have to opt in or do anything — just keep the money in the account.