What earns money in a savings account

Your savings account earns money through interest—a percentage of your balance that the bank pays you regularly, usually monthly or daily. The bank uses your deposited money to lend to other customers and invest, then shares a portion of what it makes with you as interest. The amount you earn depends on three things: how much money you have in the account, the interest rate the bank offers, and how long the money sits there.

Interest comes in two forms. straightforward interest pays you a percentage of your original balance only. Compound interest pays you interest on your balance plus any interest you've already earned—meaning your money grows faster because you earn "interest on interest." Most savings accounts use compound interest, often calculated daily but paid monthly.

The interest rate itself varies widely. Banks set their own rates based on what the Federal Reserve does with its benchmark rate. When the Fed raises rates, banks typically raise savings rates. When the Fed lowers rates, banks lower theirs. Right now, rates at traditional banks range from near zero to around 0.01 percent annually, while online banks and credit unions often offer 4 to 5 percent or higher. The difference between 0.01 percent and 4.5 percent on a $10,000 balance is roughly $450 per year—a real gap worth paying attention to.

Key Takeaways

  • Interest rates at online banks and credit unions are typically much higher than at traditional brick-and-mortar banks, sometimes 4 to 5 percent versus 0.01 percent.
  • Compound interest means you earn interest on your interest, so your money grows faster the longer it stays in the account.
  • The rate your bank pays can change at any time, so checking rates every few months helps you know whether to move your money.
  • High-yield savings accounts and money market accounts are the main ways to earn meaningful interest without taking on investment risk.

High-yield savings accounts versus regular savings accounts

A high-yield savings account is a savings account that pays a much higher interest rate than a standard account at the same bank. The catch is that high-yield accounts are almost always offered by online banks or credit unions, not by traditional banks with physical branches. Online banks have lower overhead costs, so they pass more of their earnings to depositors as interest.

The difference in earnings is substantial. On a $25,000 balance, a traditional bank paying 0.01 percent earns you about $2.50 per year. The same $25,000 in a high-yield account paying 4.5 percent earns you roughly $1,125 per year. That gap widens as your balance grows. The tradeoff is that you cannot walk into a branch to deposit cash or speak to a teller in person—everything happens online or by mail. For most people saving money rather than managing it daily, this is not a real problem.

High-yield rates change frequently. Banks raise and lower them based on what the Federal Reserve does and how much competition they face from other banks. A rate that is 4.5 percent today might be 3.8 percent in three months. This is normal and expected. You are not locked into a rate—your account straightforward earns whatever the bank is currently paying.

Money market accounts and certificates of deposit

A money market account is a hybrid between a savings account and a checking account. It typically pays interest similar to a high-yield savings account but also gives you a debit card or checkbook so you can withdraw money more easily. The tradeoff is that money market accounts often have higher minimum balances (sometimes $2,500 or more) and may limit how many withdrawals you can make per month. If you need frequent access to your money, a regular high-yield savings account is usually simpler.

A certificate of deposit (CD) is a different product entirely. You agree to leave a fixed amount of money with the bank for a set period—three months, one year, five years, or longer. In exchange, the bank pays you a fixed interest rate that is usually higher than what a savings account offers. If you withdraw the money before the term ends, you pay a penalty, usually a few months' worth of interest. CDs make sense if you have money you know you will not need for a specific period and want a may provide rate. They do not make sense if you might need the money sooner.

How to compare rates and find the best account for you

Start by listing what you need from the account. Do you need to deposit cash in person? Do you need to withdraw money frequently? Do you have a large balance or a small one? Are you saving for a specific goal with a timeline, or is this long-term money you will not touch for years? Your answers determine which type of account makes sense.

Once you know the type, use a rate-comparison site to see what banks are currently offering. Bankrate, DepositAccounts, and the Federal Deposit Insurance Corporation (FDIC) website all list rates from multiple banks updated regularly. Write down the top three or four options with their rates, minimum balances, and any fees. Then check each bank's website directly to confirm the rate is still current—rates change fast, and a comparison site may show yesterday's number.

Pay attention to fees. Some accounts charge monthly maintenance fees, fees for falling below a minimum balance, or fees for transfers. A high interest rate means nothing if you lose it to fees. Look for accounts with no monthly fees and no minimum balance, or a minimum you can actually meet. Most online banks offer both.

What happens to your interest if you move your money

If you move your savings to a different bank, the interest you have already earned stays with you—it becomes part of your balance when you transfer. The new bank does not take it away. What changes is the rate going forward. Money in your old account stops earning interest once you close it. Money in your new account starts earning whatever that bank's current rate is.

The transfer itself takes three to five business days through an electronic transfer, or longer if you mail a check. During those days, your money is in transit and earning nothing. This is a small cost compared to the difference between a 0.01 percent rate and a 4.5 percent rate, but it is worth knowing. Some people move their money every few months to chase the highest rate. Others move it once and stay put. Both approaches work—moving costs you a few days of interest, but staying with a low-rate bank costs you hundreds of dollars per year.

The role of FDIC insurance in your earnings

The Federal Deposit Insurance Corporation (FDIC) insures deposits at banks up to $250,000 per account holder, per bank. This means if the bank fails, the government guarantees you get your money back up to that limit. This insurance applies to all savings accounts, high-yield accounts, and CDs at FDIC-insured banks, regardless of the interest rate.

Credit unions use a similar system called National Credit Union Administration (NCUA) insurance, also covering up to $250,000 per account holder. Both protections are free and automatic—you do not have to do anything to set up them. This matters because some of the banks offering the highest rates are smaller online banks you may not have heard of. The high rate is real, and your money is protected, but it is worth confirming the bank is FDIC-insured before you deposit. You can check this on the FDIC's website by searching the bank's name.

Why interest rates change and what to expect

Interest rates on savings accounts move in response to the Federal Reserve's actions. The Fed sets a target range for the federal funds rate—the rate banks charge each other for overnight loans. When the Fed raises this rate, banks eventually raise what they pay on savings. When the Fed lowers it, banks lower savings rates. This is not when ready—it can take weeks or months for a rate change to show up in your account.

Beyond the Fed, banks also change rates based on competition. If a competitor bank starts offering 5 percent and you are earning 4 percent, your bank may raise its rate to keep your business. If many banks are offering high rates and your bank wants to reduce costs, it may lower its rate. You have no control over these changes, but you do have control over where your money sits. Checking rates every few months and moving your money if a better option appears is a normal part of managing savings.

There is no way to predict where rates will go. Some people worry that rates will drop and move their money into a CD to lock in a rate. Others keep their money in a high-yield savings account because they value flexibility. Both strategies have merit. The important thing is understanding that rates will change and that your job is to notice when they do.

Frequently Asked Questions

Can I lose money in a savings account?

No. A savings account cannot go negative due to interest. You earn money or earn nothing, but the bank does not charge you interest on your balance. You can lose purchasing power if inflation is higher than your interest rate—meaning your money buys less than it did before—but the dollar amount in your account only grows or stays the same.

How often is interest paid into my account?

Most banks calculate interest daily but deposit it monthly. Some deposit it quarterly or annually. Check your account agreement or ask the bank directly. The frequency matters less than the annual rate—a bank that compounds daily at 4.5 percent will pay you more than a bank that compounds monthly at 4 percent, even if the monthly bank deposits more often.

What if I withdraw money before the month ends?

You still earn interest on the money that was in the account. Interest is calculated based on your daily balance, so if you had $10,000 for 20 days and $5,000 for 10 days, you earn interest on both amounts for the time they were there. Withdrawals do not erase interest you have already earned.

Is it worth moving my money to chase higher rates?

It depends on your balance and how often rates change. If you have $50,000 and rates move from 4 percent to 4.5 percent, moving saves you about $250 per year. If you have $5,000, the difference is $25 per year. The transfer takes a few days and costs you a small amount of interest during that time. For large balances, moving is usually worth it. For small balances, the effort may not pay off.

Can I earn more than the advertised rate?

No. The rate shown is what you earn. Some banks offer promotional rates for new customers—a higher rate for the first few months—but after that period ends, the rate drops to the standard rate. Read the fine print before opening an account so you know when a promotional rate expires.