Yes, savings accounts earn interest, but the amount depends on the bank and the rate they offer

A savings account holds your money and pays you interest on the balance you keep there. The bank uses your deposits to lend money to other customers, and in return, it pays you a percentage of your balance each month or year. The interest rate varies by bank and changes over time based on what the Federal Reserve does with its benchmark rate.

Not all savings accounts earn the same amount. A traditional bank might pay 0.01% annual interest, meaning $10,000 would earn about $1 per year. An online bank might pay 4% or 5%, which would earn $400 to $500 on that same $10,000. The difference matters when you're saving for months or years.

Interest compounds, which means you earn interest on your interest. If you deposit $1,000 at 4% annual interest and don't touch it, after one year you'll have $1,040. The next year, you earn 4% on $1,040, not just the original $1,000. Over time, compounding makes your money grow faster than simple addition would suggest.

Key Takeaways

  • Banks pay interest on savings account balances, but rates vary widely—from less than 0.1% at traditional banks to 4% or higher at online banks.
  • Interest compounds, meaning you earn returns on your previous interest, which accelerates growth over time.
  • The Federal Reserve's interest rate decisions affect what banks offer, so rates rise and fall throughout the year.
  • You can compare rates across banks before opening an account to maximize what you earn on your savings.
  • Interest is taxable income, so you'll receive a 1099-INT form at tax time if you earn $10 or more in interest during the year.

How banks calculate and pay interest

Banks calculate interest using your average daily balance or your ending daily balance. Average daily balance means the bank adds up what you had each day of the month and divides by the number of days. Ending daily balance uses only the amount on the last day of the month. Most online banks use average daily balance, which is fairer to you if your balance fluctuates.

Interest posts to your account monthly, quarterly, or annually depending on the bank. Monthly is most common. When interest posts, it becomes part of your balance, so the next interest calculation includes it. This is compounding in action.

The rate you see advertised—called the Annual Percentage Yield (APY)—already accounts for compounding. If a bank says 4.5% APY, that's what you'll actually earn over a year if you don't add or withdraw money. The older term, Annual Percentage Rate (APR), doesn't include compounding, so APY is always higher and more useful for comparing savings accounts.

Why rates change and how to track them

The Federal Reserve sets a target range for the federal funds rate, which is the interest rate banks charge each other for overnight loans. When the Fed raises this rate, banks typically raise what they pay on savings accounts. When the Fed cuts rates, savings account rates fall too, sometimes within days.

You can check the current federal funds rate on the Federal Reserve's website (federalreserve.gov). Major financial news outlets like CNBC, Bloomberg, and The Wall Street Journal report when the Fed makes changes. If you're shopping for a savings account, knowing whether the Fed is likely to raise or cut rates helps you decide whether to lock in a rate now or wait.

Banks are not required to pass along Fed rate changes to customers. Some online banks move quickly; traditional banks often lag by weeks or months. If you're earning a competitive rate at one bank and rates rise elsewhere, you can move your money to a higher-paying account. There's no penalty for switching banks.

The difference between savings accounts and other interest-bearing accounts

A money market account works like a savings account but usually pays slightly higher interest in exchange for requiring a larger minimum balance (often $2,500 or more). You can write checks or use a debit card, but there are limits on how many withdrawals you can make per month.

A certificate of deposit (CD) locks your money away for a set time—three months, six months, one year, or longer—and pays a fixed rate for that entire period. CDs usually pay more than savings accounts because you can't touch the money without a penalty. If you withdraw early, you lose some or all of the interest you've earned.

A regular checking account rarely earns interest, or earns almost nothing (0.01% or less). Checking accounts prioritize access and convenience, not growth. If you want your money to work for you, a savings account or money market account is the right place.

How to compare rates across banks

Use websites like Bankrate, DepositAccounts, or NerdWallet to see current rates from dozens of banks side by side. These sites update rates daily and let you filter by account type, minimum balance, and whether the bank is online-only or has branches. You don't need to use the comparison site to open an account—it's just a research tool.

When comparing, look at the APY, not just the interest rate. Check whether there's a minimum balance requirement and what happens if your balance drops below it (some banks lower your rate; others charge a fee). Read the fine print about how often interest compounds and whether the rate is promotional (temporary) or standard.

Online banks almost always pay more than brick-and-mortar banks because they have lower overhead costs. If you don't need to visit a physical branch, an online savings account will grow your money faster. If you prefer face-to-face service, you'll earn less but may find the convenience worth it.

What happens to interest when rates fall

If you're earning 4.5% and the Fed cuts rates, your bank will eventually lower your rate too. There's no grace period—banks adjust rates when they choose, sometimes within days of a Fed cut. Your money doesn't disappear, but it grows more slowly.

This is why some people move money between accounts as rates change. If you expect rates to fall, locking money into a CD at today's rate protects you. If you think rates will rise, keeping money in a flexible savings account lets you benefit when your bank raises the rate.

You can't predict rate movements perfectly, so don't overthink it. The difference between earning 3% and 4% on $10,000 is $100 per year—meaningful but not life-changing. Focus on building the habit of saving regularly; the rate matters less than the discipline.

Tax treatment of savings account interest

Interest you earn is taxable income. If you earn $10 or more in interest during a calendar year, your bank will send you a Form 1099-INT by January 31 of the following year. You report this interest on your tax return, and you owe federal income tax on it (and state income tax in most states).

The tax rate depends on your overall income and tax bracket. If you're in the 22% tax bracket and earn $500 in interest, you'll owe roughly $110 in federal tax on that interest. This is why the real return on a savings account is less than the stated APY—you have to give some of it to the IRS.

If you earn less than $10 in interest, your bank doesn't have to send a 1099-INT, but you still owe tax on it if you file a return. Keep your own records of interest earned if the amount is small.

Frequently Asked Questions

How much interest will I earn on $5,000 in a savings account?

At 4% APY, you'd earn about $200 per year, or roughly $17 per month. At 0.01% APY (a typical traditional bank rate), you'd earn about 50 cents per year. The exact amount depends on the bank's rate, how often interest compounds, and whether you add or withdraw money during the year.

Can I lose money in a savings account?

No. Your balance can't go down from interest calculations. You only lose money if you withdraw it yourself or if the bank charges fees that exceed your interest earnings. Accounts insured by the FDIC are protected up to $250,000 per depositor, so your principal is safe even if the bank fails.

Is it better to keep money in a savings account or under my mattress?

A savings account is better. Even at 0.01% APY, you earn something. Under a mattress, inflation eats away at your money's purchasing power—if inflation is 3% and you earn 0%, you're losing 3% per year in real terms. A savings account at least keeps pace with some of that loss.

Do I have to keep a minimum balance to earn interest?

It depends on the bank. Many online banks have no minimum balance requirement and pay interest on any amount, even $1. Traditional banks often require $500 to $2,500 to open an account or to earn the advertised rate. Check the bank's terms before opening an account.

What if my bank's rate drops after I open an account?

Your money stays in the account and continues to earn interest at the new (lower) rate. You're not locked in. You can move your money to another bank offering a higher rate at any time without penalty. Banks compete for deposits, so shopping around when rates change can help you earn more.