Yes, money in a savings account grows through interest your bank pays you

Your bank pays you interest on the money you keep in a savings account. That interest is extra money — it comes from the bank, not from your own deposits. The amount you earn depends on the interest rate the bank offers, how much money you have in the account, and how long it stays there.

The growth is usually small. A savings account earning 4% annual interest on $1,000 adds about $40 per year, or roughly $3.33 per month. But the longer money sits in the account, the more interest accumulates. Some banks also pay interest on the interest you've already earned — this is called compound interest — which means your balance grows a little faster over time.

Not all savings accounts earn the same rate. Online banks often pay higher rates than brick-and-mortar banks. Rates also change when the Federal Reserve raises or lowers its benchmark rate, which happens several times per year. Your bank will tell you the current rate before you open an account, and you can compare rates across different banks to find the best deal.

Key Takeaways

  • Banks pay interest on savings account balances, which means your money grows without you adding more.
  • The interest rate varies by bank and changes over time, so comparing rates before opening an account matters.
  • Compound interest means you earn interest on interest already earned, which speeds up growth slightly.
  • Money in a savings account is safe and insured by the FDIC up to $250,000, even if the bank fails.
  • Interest earned on a savings account is taxable income and must be reported on your tax return.

How interest rates work and why they change

Each bank sets its own interest rate for savings accounts. Online banks typically offer higher rates than traditional banks because they have lower overhead costs. Right now, rates range from nearly 0% at some large national banks to 4% or higher at online banks, but this changes frequently.

The Federal Reserve influences all these rates by setting its own benchmark rate, called the federal funds rate. When the Fed raises this rate, banks usually raise the interest they pay on savings accounts. When the Fed lowers it, savings rates fall too. The Fed has raised rates multiple times since 2022, which is why savings account rates are higher now than they were in 2020 and 2021.

You can lock in a rate by opening a certificate of deposit (CD), which is a special savings product where you agree to leave money untouched for a set period — usually three months to five years. CDs pay higher interest than regular savings accounts, but you pay a penalty if you withdraw the money early. Regular savings accounts let you withdraw anytime without penalty, but the rate can change at any time.

Compound interest and how it speeds up growth

Compound interest happens when a bank pays interest on the interest you've already earned. Here's how it works: if you have $1,000 earning 4% per year, after one year you have $1,040. In year two, the bank pays 4% on $1,040, not just the original $1,000. That's an extra $1.60 compared to simple interest.

The difference grows larger over longer periods. After 10 years at 4% with compound interest, $1,000 becomes about $1,480. With simple interest, it would only be $1,400. The longer money stays in the account, the more compound interest adds up. This is why starting early and leaving money untouched makes a real difference over decades.

Most savings accounts compound interest daily or monthly. Daily compounding is slightly better than monthly, but the difference is small. When you compare savings accounts, look for the APY (annual percentage yield), which already includes the effect of compounding. APY is always higher than the stated interest rate because it accounts for compound interest.

What reduces or stops your money from growing

Fees can eat into your interest earnings. Some banks charge monthly maintenance fees, overdraft fees, or fees for falling below a minimum balance. A $5 monthly fee on a $1,000 account earning $3.33 per month in interest means you're actually losing money. Before opening an account, check whether the bank charges fees and what the minimum balance requirement is.

Inflation also reduces what your money can buy, even though the account balance grows. If your savings account earns 2% interest but inflation is running at 3%, your money is losing purchasing power. You can buy less with $1,000 next year than you can today. This is why comparing savings rates to inflation matters when deciding where to keep long-term money.

Withdrawals stop the clock on compound interest. Every time you take money out, you have less in the account earning interest. Some people keep a separate high-yield savings account for emergency money they might need, and a CD or other account for money they plan to leave untouched.

How to find the best rate for your situation

Start by checking what your current bank pays. Call the customer service number on your statement or log into your online account to find the current rate. Write it down so you can compare it to other banks.

Then check rates at online banks like Marcus, Ally, American Express Personal Savings, and others. These sites update rates daily, so you can see the current offers. Look for the APY, not just the interest rate, because APY tells you the real return after compounding.

Consider whether you want to move your money or open a second account. Moving money takes a few days and requires giving your new bank your old account number so they can transfer it. Opening a second account at a different bank lets you keep your current account while earning a higher rate elsewhere. Some people use both strategies — keeping checking at their local bank and savings at an online bank.

FDIC insurance protects your money even if the bank fails

The Federal Deposit Insurance Corporation (FDIC) insures savings accounts at member banks up to $250,000 per account holder per bank. This means if the bank fails, you get your money back up to that limit. The insurance covers the balance plus any interest earned, so compound interest doesn't put you over the limit.

If you have more than $250,000 to save, you can open accounts at multiple banks to stay within the insurance limit at each one. For example, $250,000 at Bank A and $250,000 at Bank B are both fully insured. You can also open a joint account with another person — that account gets its own $250,000 of coverage separate from your individual accounts.

Check whether a bank is FDIC-insured before opening an account. The FDIC website has a tool where you can search by bank name. Most traditional banks and many online banks are insured, but some online savings products are not.

Taxes on savings account interest

Interest you earn on a savings account is taxable income. Your bank will send you a 1099-INT form each January if you earned $10 or more in interest during the previous year. You report this amount on your tax return, and you owe federal income tax on it at your regular tax rate.

Some states also tax savings account interest, though many do not. Check your state's tax rules or ask a tax preparer whether you owe state tax on interest income. If you earned very little interest, it might not change your tax bill, but you still have to report it.

This is one reason why high-yield savings accounts matter. If you earn $40 in interest at 0.01% versus $400 at 4%, the difference in taxes owed is real. The higher rate means more interest to report, but you also have more money growing, which is the point of saving.

Frequently Asked Questions

How much money will I have after one year in a savings account?

It depends on the interest rate and how much you deposit. At 4% APY, $1,000 becomes about $1,040 after one year. At 0.5% APY, it becomes about $1,005. The bank's website or your account statement shows the exact rate, so you can calculate your own number by multiplying your balance by the rate.

Can I lose money in a savings account?

Your balance cannot go down from interest alone — banks only add money, never subtract it. However, fees can reduce your balance, and inflation reduces what your money can buy. Withdrawals also lower your balance, but that's your choice, not the bank's doing.

Is a savings account better than keeping cash at home?

Yes. Cash at home earns nothing and loses value to inflation. A savings account earns interest, is insured by the FDIC, and keeps your money safe. The only reason to keep cash at home is for immediate emergencies when you can't reach a bank.

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

Money market accounts usually pay higher interest than savings accounts but require a larger minimum balance and limit how many withdrawals you can make per month. Savings accounts are more flexible. Both are FDIC-insured up to $250,000.

Do I have to pay taxes on interest if I earned less than $10?

The bank doesn't send a 1099-INT form if you earned less than $10, but you still owe tax on any interest you earned. Report it on your tax return even if you don't receive a form. The IRS expects you to track all income, regardless of whether you get a form.