Where your money earns interest

Interest is paid to you by a bank or credit union when you keep money in certain accounts with them. The most common places are savings accounts, money market accounts, and certificates of deposit (CDs). Each one pays a different rate and has different rules about when you can take your money out.

The bank pays you interest because it uses your money to lend to other customers. The interest rate they offer you depends on how much money you deposit, how long you agree to leave it there, and what the Federal Reserve's current rates are. When the Fed raises rates, banks typically raise what they pay you. When the Fed lowers rates, so do banks.

You do not have to do anything special to earn interest once your account is open. The bank calculates it automatically and adds it to your balance. You can watch it grow in your account statement each month.

Key Takeaways

  • Savings accounts, money market accounts, and CDs all pay interest, but at different rates and with different rules about withdrawals.
  • Higher interest rates usually come with either a longer commitment (like a CD) or a larger minimum deposit.
  • Interest compounds, meaning you earn interest on your interest, so money grows faster the longer it sits.
  • The interest rate your bank offers changes based on Federal Reserve decisions, so rates you see today may be different in six months.

Savings accounts and how much they pay

A savings account is the simplest place to earn interest. You can deposit money, withdraw it whenever you want (with some limits), and the bank pays you interest on whatever balance you keep. The rate varies by bank—some online banks currently pay higher rates than traditional brick-and-mortar banks, though this changes.

The trade-off is that savings accounts pay lower interest than other options. You are paying for the flexibility to access your money whenever you need it. If you have $5,000 in a savings account earning 4% annually, you would earn about $200 per year, added to your account in small amounts each month.

Most savings accounts have a limit on how many withdrawals you can make per month without a fee, though this rule is less common now than it used to be. Check your bank's terms to see what applies to your account.

Money market accounts for slightly higher rates

A money market account is a hybrid between a savings account and a checking account. It pays more interest than a savings account, but usually requires a larger minimum deposit to open—often $2,500 or more, though this varies by bank. You can write checks from it and make withdrawals, but the number of withdrawals per month may be limited.

The higher interest rate reflects the larger commitment you are making. If you have $25,000 in a money market account earning 4.5% annually, you would earn about $1,125 per year. The exact rate depends on your bank and the current economic environment.

Money market accounts are useful if you want better returns than a savings account but still need occasional access to your money. They are not the best choice if you need to withdraw frequently or if you cannot meet the minimum deposit.

Certificates of deposit for the highest rates

A certificate of deposit, or CD, locks your money away for a set period—usually three months, six months, one year, or five years. In exchange, the bank pays you a higher interest rate than a savings account. The longer you agree to leave the money untouched, the higher the rate.

If you open a one-year CD with $10,000 at 5% annual interest, you will earn $500 over that year. You cannot withdraw the money before the year is up without paying a penalty, usually a few months' worth of interest. After the year ends, the bank either returns your money and interest, or automatically rolls it into a new CD at the current rate.

CDs work best for money you know you will not need for a while. If you have multiple chunks of money with different timelines, you can open CDs that mature at different times—a strategy called laddering—so some money becomes available each year while the rest keeps earning higher rates.

How compound interest makes money grow faster

Interest compounds when the bank adds your earned interest to your account balance, and then pays you interest on that larger balance the next month. This means you earn interest on your interest, and your money grows faster than if you just earned a flat amount each year.

The longer your money sits, the more noticeable compounding becomes. A $10,000 deposit earning 4% annually grows to about $10,400 after one year. After five years at the same rate, it grows to about $12,167—not just $12,000. The extra $167 came from earning interest on your interest.

This is why starting early and leaving money untouched matters. A teenager who deposits $5,000 in a CD at age 18 and does not touch it will have significantly more at age 65 than someone who waits until age 35 to deposit the same amount, even if both earn the same interest rate.

What affects the interest rate you receive

Banks set their own rates, so different banks pay different amounts for the same type of account. Online banks often pay higher rates than traditional banks because they have lower overhead costs. Credit unions sometimes pay higher rates to their members than banks do to customers.

The amount you deposit also matters. Some banks offer tiered rates—a higher rate if you keep a larger balance. A bank might pay 3.5% on balances under $50,000 and 4.2% on balances above that. Check the terms before you open an account.

Federal Reserve decisions drive the overall direction of rates across all banks. When the Fed raises its benchmark rate, banks raise what they pay you. When the Fed cuts rates, banks cut what they pay. This happens with a lag of a few weeks, and banks do not always move their rates by the same amount the Fed moved.

Moving money between accounts to maximize interest

You can open accounts at multiple banks to take advantage of different rates. There is no rule against having a savings account at one bank, a CD at another, and a money market account at a third. Some people do this to spread risk or to chase slightly higher rates.

If you find a bank offering a higher rate than your current bank, you can transfer money to the new account. The transfer usually takes one to three business days. Your old account remains open unless you close it, and you can close it whenever you want.

Be aware that switching banks frequently to chase rates can be tedious, and the difference in earnings is usually small unless you have a large balance. A 0.5% difference on $5,000 is only $25 per year. It makes more sense to switch if you have $50,000 or more, or if you are opening a new account anyway.

Frequently Asked Questions

Do I have to pay taxes on interest I earn?

Yes. Interest is taxable income. Your 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 it on your tax return. The amount you owe in taxes depends on your overall income and tax bracket.

What happens to my interest if I withdraw money early from a CD?

You lose some or all of the interest you earned. The penalty is usually three to six months of interest, though it varies by bank and CD length. A few banks offer no-penalty CDs that let you withdraw early without losing interest, but they pay lower rates in exchange.

Is my interest-earning money safe if the bank fails?

Yes, if your bank is FDIC-insured. The Federal Deposit Insurance Corporation protects up to $250,000 per account type at each bank. Your savings account, money market account, and CDs are each covered separately, so you can have $250,000 in each without losing coverage.

Can I earn interest on a checking account?

Some checking accounts pay interest, but the rates are usually very low—often under 0.5% annually. Most people use checking accounts for spending and bills, not for earning interest. Savings accounts, money market accounts, and CDs are better choices if your goal is to earn interest.

How often is interest added to my account?

Banks calculate and add interest monthly, though some do it daily or quarterly. The frequency does not matter much for your earnings—what matters is the annual rate. A 4% annual rate produces the same yearly earnings whether interest is added monthly or daily.