Yes, a savings account makes money through interest, but the amount depends on the rate your bank offers and how much you keep in the account

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 on a regular schedule, usually monthly or daily. The bank uses your money to lend to other customers and make investments, and it shares a portion of what it earns with you as payment for letting them use your funds.

How much you earn depends on two things: the interest rate the bank offers and your account balance. A bank offering 4.5% annual interest on a $10,000 balance will pay you roughly $450 per year (before taxes). The same rate on a $1,000 balance pays about $45 per year. The rate itself varies widely — some banks offer less than 0.01%, while others offer 4% or higher. The difference between a low-rate bank and a high-rate bank on the same $10,000 can be hundreds of dollars per year.

Key Takeaways

  • Banks pay interest on savings account balances, with rates ranging from less than 0.01% at some traditional banks to 4% or higher at online banks.
  • Your earnings are calculated by multiplying your balance by the annual interest rate, so a higher balance or higher rate means more money in your account over time.
  • Interest compounds, meaning you earn interest on your interest, which accelerates growth the longer money sits in the account.
  • The Federal Reserve sets a benchmark rate that influences what banks offer, so rates change over time and vary by bank.
  • You owe income tax on interest earned, so your actual take-home amount is less than the interest rate suggests.

How interest rates are set and why they change

Banks do not choose their interest rates randomly. The Federal Reserve sets a benchmark rate (called the federal funds rate) that influences what banks pay on deposits and charge on loans. When the Fed raises its rate, banks typically raise savings account rates. When the Fed lowers its rate, banks lower theirs. This is why savings account rates were near zero in 2020 and 2021, then climbed to 4% or higher starting in 2023.

Different banks also compete for deposits, so a bank trying to attract more customers might offer a higher rate than its competitors. Online banks, which have lower overhead costs than brick-and-mortar branches, often offer higher rates than traditional banks. A credit union might offer a different rate than a national bank. Shopping around for the best rate can mean earning significantly more on the same balance.

Rates also change based on the type of account. A regular savings account typically earns less than a money market account or a certificate of deposit (CD), which lock your money away for a set period in exchange for a higher rate.

How compounding makes your money grow faster

Interest compounds when the bank adds interest to your account, and then pays interest on that interest in the next period. If you have $10,000 earning 4% annually and the bank compounds monthly, you earn about $33 in the first month. In the second month, you earn interest on $10,033, not just the original $10,000. Over a year, compounding adds up — you end up with roughly $408 in total interest instead of $400.

The longer money stays in the account, the more compounding matters. Over five years at 4% with monthly compounding, $10,000 grows to about $12,210. Over ten years, it reaches about $14,918. The difference between simple interest (no compounding) and compound interest grows larger the longer the money sits. This is why starting early and leaving money untouched makes a real difference.

The frequency of compounding also matters. Daily compounding earns slightly more than monthly compounding, which earns more than annual compounding. Most online banks compound daily, which is why they often advertise their rates as "APY" (annual percentage yield) rather than "APR" — the APY includes the effect of compounding.

What you actually earn after taxes

Interest income is taxable. 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 report that income on your tax return. You owe federal income tax on it, and possibly state income tax depending on where you live.

If you earned $400 in interest and your tax bracket is 22%, you owe roughly $88 in federal tax, leaving you with about $312. If your bracket is 12%, you owe about $48, leaving you with $352. The higher your income, the higher your tax bracket, and the less of your interest you keep. This is why the advertised interest rate is not the same as your actual earnings.

Some people use tax-advantaged accounts like a Roth IRA or a 529 education savings plan to earn interest without paying tax on it (or with tax deferred until withdrawal). These accounts have contribution limits and rules about when you can withdraw, but they let your money grow faster because you are not losing a portion to taxes each year.

Comparing savings account earnings to other options

A savings account is one of the safest places to keep money because deposits are insured by the FDIC (Federal Deposit Insurance Corporation) up to $250,000 per account holder per bank. You cannot lose your principal, and you can withdraw money whenever you need it. The tradeoff is that the interest rate is low compared to other investments.

A stock market investment might earn 7% to 10% on average over many years, but the value can drop in the short term and you could lose money. A bond might earn 4% to 5%, but you are locked in for a set period. A high-yield savings account at an online bank might earn 4% to 5%, which is competitive with bonds but with full liquidity and FDIC protection. A CD might earn 5% or higher, but your money is locked away for three months to five years.

The right choice depends on when you need the money and how much risk you can tolerate. If you need the money within a year or two, a high-yield savings account or a short-term CD makes sense. If you will not need it for ten years, a stock investment might earn more over time despite short-term ups and downs.

How to find the best rate for your situation

Interest rates change frequently, so the best rate today might not be the best rate next month. Websites that track savings account rates (such as Bankrate, DepositAccounts, or the FDIC's own rate database) let you compare rates across banks in real time. You can filter by account type, FDIC insurance status, and minimum balance requirements.

Online banks almost always offer higher rates than traditional banks because they have lower costs. However, online banks do not have physical branches, so you cannot deposit cash in person or speak to someone face-to-face. If you need those services, a credit union or a regional bank might offer a reasonable rate plus in-person access. If you only bank online anyway, an online bank is usually the better choice for earning more interest.

Some banks offer promotional rates for new customers — a higher rate for the first few months to attract deposits. These rates usually drop after the promotional period ends. Read the fine print to understand when the rate changes and what the regular rate will be.

What happens if you withdraw money early

A regular savings account has no penalty for withdrawals. You can take money out whenever you want without losing any interest you have already earned. This flexibility is one reason savings accounts are popular for emergency funds — you can access the money quickly if something unexpected happens.

A CD, by contrast, charges a penalty if you withdraw before the maturity date. The penalty is usually a certain number of months of interest. If you have a one-year CD earning 5% and you withdraw after six months, you might lose three months of interest as a penalty. This is why CDs are better for money you know you will not need for the full term.

Some banks offer "no-penalty CDs" that let you withdraw early without a penalty, but they typically offer a lower rate in exchange for that flexibility. The tradeoff is worth considering if you are not sure how long you can leave the money untouched.

Frequently Asked Questions

How much money do I need in a savings account to make it worth it?

Even small balances earn interest, but the amount is small. A $500 balance at 4% earns about $20 per year before taxes. A $5,000 balance earns about $200 per year. There is no minimum to start earning, but the larger your balance, the more noticeable the interest becomes. Many people use savings accounts for emergency funds or short-term goals, where the interest is a bonus rather than the main reason.

Can I move money between savings accounts to earn more interest?

Yes, you can open accounts at multiple banks and move money between them. Some people keep their emergency fund at a high-yield online bank and their everyday spending money at a traditional bank with a branch. Moving money does not trigger taxes or penalties — you are just moving your own funds. However, banks may limit how many transfers you can make per month, so check the rules before opening multiple accounts.

What is the difference between APR and APY?

APR (annual percentage rate) is the interest rate without compounding. APY (annual percentage yield) includes the effect of compounding. If a bank advertises 4% APY, that is what you actually earn over a year when compounding is included. APR is usually lower because it does not account for compounding. Banks are required to show APY on savings accounts, so that is the number to compare when shopping around.

Will my savings account interest keep up with inflation?

Not always. Inflation is the rate at which prices rise. If inflation is 3% and your savings account earns 2%, your money is losing purchasing power — you can buy less with it even though the dollar amount stayed the same. When interest rates are high (like 4% to 5%), they may keep pace with or exceed inflation. When rates are low (like 0.01%), inflation erodes your savings. This is why shopping for the best rate matters, especially during high-inflation periods.

Do I have to report savings account interest to the IRS?

If you earned $10 or more in interest during the year, the bank sends you a 1099-INT form and reports it to the IRS. You must report it on your tax return. If you earned less than $10, you still owe tax on it, but the bank does not send a form. Keep track of all interest earned so you can report it accurately when you file.