You earn interest on savings accounts, not pay it

A savings account pays you interest on the money you keep in it. You do not pay interest to the bank. The bank pays you a percentage of your balance each month or year, depending on the account and the rate they offer.

The amount you earn depends on three things: how much money sits in the account, what interest rate the bank offers, and how often they add the interest (daily, monthly, or yearly). A higher balance, a higher rate, or more frequent compounding all mean more money in your pocket.

Interest rates on savings accounts vary widely. Some banks offer rates near zero percent, while others—usually online banks—offer rates between 4 and 5 percent or higher. The rate can change at any time, so what you earn this month may differ next month.

Key Takeaways

  • Banks pay you interest on the balance you keep in a savings account; you never pay interest on savings.
  • Interest rates vary by bank and change over time, so comparing rates before opening an account matters.
  • The interest you earn gets added to your account balance, and you can earn interest on that interest if it compounds.
  • Savings accounts are FDIC-insured up to $250,000 per depositor per bank, so your money and the interest it earns are protected.

How the bank calculates what you earn

Banks use your annual percentage yield (APY) to calculate interest. This is the real rate you earn in a year, including the effect of compounding. If a bank advertises 4.5% APY on a savings account and you keep $10,000 in it for a full year without adding or removing money, you will earn roughly $450.

The bank does not wait until the end of the year to pay you. Most banks compound interest daily, meaning they calculate what you owe and add it to your account every single day. Some add it monthly or quarterly instead. Daily compounding means you earn interest on the interest that was already added, which grows your balance faster.

The exact amount you earn depends on how many days the money sits in the account. If you deposit $10,000 on the first of the month and withdraw it on the fifteenth, you earn interest only for those fifteen days, not the full month.

Why rates differ between banks

Online banks typically offer higher rates than brick-and-mortar banks because they have lower overhead costs. They do not maintain physical branches, so they pass some of those savings to customers in the form of better rates. A traditional bank with many locations might offer 0.01% APY while an online bank offers 4.75% APY on the same type of account.

Banks also change rates based on what the Federal Reserve does. When the Fed raises its benchmark interest rate, banks usually raise the rates they offer on savings accounts. When the Fed cuts rates, banks typically cut theirs too. This can happen several times a year, so the rate you lock in today may not be the rate you earn six months from now.

Some accounts offer promotional rates for new customers—a higher rate for the first few months, then a drop to the standard rate. Read the fine print to see when the promotional period ends and what your rate will be after that.

What happens to interest you earn

The interest the bank pays you becomes part of your account balance. You do not receive a check or a separate deposit. The money just sits there, growing your total balance. If you earn $50 in interest one month, your balance increases by $50, and next month you earn interest on that $50 as well.

This is called compound interest, and it is the reason leaving money in a savings account for years can add up. The longer the money stays, the more interest compounds, and the faster your balance grows without you adding anything new.

You can withdraw the interest anytime, just like you withdraw the principal. There is no penalty for taking out the money you earned. However, some savings accounts have limits on how many withdrawals you can make per month before fees kick in—though many banks have removed these limits in recent years.

Comparing rates before you open an account

Interest rates change constantly, so the rate advertised today may not be the rate you get tomorrow. Before opening a savings account, check what several banks are offering. Websites like Bankrate, DepositAccounts, and the banks' own sites show current rates.

Look at the APY, not just the interest rate. APY tells you the true annual return including compounding, while the interest rate alone can be misleading. A bank advertising a high rate but compounding only quarterly will pay you less than a bank with a slightly lower rate that compounds daily.

Also check whether the bank charges monthly maintenance fees, requires a minimum balance, or limits the number of withdrawals. A high interest rate means little if you lose it to fees or cannot access your money when you need it.

When interest rates drop and what to do

If you opened a savings account when rates were high and the Fed cuts rates, your bank will likely cut your rate too. You will earn less interest going forward, but the money already in your account is not affected—you keep what you earned.

When rates drop, you have options. You can stay put if the rate is still competitive. You can move your money to a bank offering a better rate—there is no penalty for closing a savings account and moving to another bank. Or you can split your money between accounts at different banks to spread your risk and potentially earn different rates.

Some people move money into a certificate of deposit (CD) when rates are high. A CD locks in a fixed rate for a set period (three months, one year, five years, and so on). If rates drop after you open the CD, you still earn the higher locked-in rate. The tradeoff is that you cannot withdraw the money without a penalty until the CD matures.

Tax implications of savings account interest

The interest you earn on a savings account is taxable income. The bank will send you a Form 1099-INT at the end of the year if you earned $10 or more in interest. You report this on your tax return, and you owe federal income tax on it at your regular tax rate.

Some states also tax savings account interest as income. Check your state's tax rules to see whether you owe state tax on the interest you earn. If you earned a small amount—under $10—you may not receive a 1099-INT, but you still owe tax on it if your state requires it.

If you are in a high tax bracket, the after-tax return on a savings account might be lower than you expect. For example, if you earn 4.5% interest but pay 24% in federal tax, your real after-tax return is closer to 3.4%. This is still better than keeping money in a checking account that pays no interest, but it is worth understanding.

Frequently Asked Questions

Can I lose money in a savings account?

No. Your deposits are insured by the FDIC up to $250,000 per depositor per bank, so you cannot lose the principal. The interest you earn is also protected. The only way your balance shrinks is if you withdraw money or if fees exceed the interest you earn—which is rare with modern accounts.

What is the difference between a savings account and a money market account?

Both earn interest and are FDIC-insured. Money market accounts often pay slightly higher rates but may require a larger minimum balance and limit withdrawals. Savings accounts are simpler and more flexible. Compare the rates and terms at your bank to see which makes sense for your situation.

Do I have to pay taxes on interest I earn?

Yes. Interest is taxable income. If you earn $10 or more in a year, the bank sends you a Form 1099-INT to report on your tax return. You owe federal income tax on it, and possibly state tax depending on where you live.

What happens to my interest if I close the account?

The interest you earned stays yours. When you close the account, the bank pays out your full balance—principal plus all interest earned—to you. You still owe tax on the interest for that year.

Can the bank lower my interest rate without warning?

Yes. Banks can change rates at any time without notice. However, they must notify you before the change takes effect. If you disagree with a rate cut, you can move your money to another bank with no penalty.