What you earn from a savings account depends on the interest rate the bank offers and how much money you keep in the account

A savings account makes you money through interest — a small percentage the bank pays you for letting them use your money. The amount you earn is not the same at every bank, and it changes over time. Right now, some banks pay around 4% to 5% per year on savings accounts, while others pay less than 0.01%. The difference between these two is enormous: on $10,000, you might earn $400 to $500 in a year at a high-rate bank, or just $1 at a low-rate bank.

The bank pays you interest because they lend out the money you deposit to other customers — for mortgages, car loans, and business loans. They keep the difference between what they pay you and what they charge borrowers. Your interest is calculated on your balance, meaning the more money you keep in the account and the longer you keep it there, the more you earn.

Key Takeaways

  • Interest rates on savings accounts vary widely between banks, from under 0.01% to over 5% per year, so comparing rates before opening an account matters.
  • Your earnings are calculated on your account balance, so $10,000 earning 5% makes $500 in a year, while $1,000 earning 5% makes $50.
  • Interest compounds, meaning you earn money on your interest as well as your original deposit, though the effect is small in savings accounts.
  • Banks can change their interest rates at any time, so a rate that is high today may drop in a few months.

How the math works: calculating what you will earn

The simplest way to estimate your earnings is to multiply your account balance by the interest rate. If you have $5,000 in an account paying 4% per year, you earn roughly $200 in a year: $5,000 × 0.04 = $200. If you have $10,000 at 2%, you earn $200 as well.

Most banks calculate interest daily but pay it monthly or quarterly. This means your balance changes slightly each day as interest is added, and you earn a tiny amount of interest on that interest — called compounding. In a savings account, this effect is small. On $5,000 at 4% compounded daily, you might earn $204 instead of $200 over a year. The difference grows larger with bigger balances and higher rates, but for most people starting out, the straightforward multiplication gives you a close enough picture.

Why interest rates are so different between banks

Banks set their own interest rates based on what the Federal Reserve does and what other banks are offering. When the Federal Reserve raises its benchmark rate, banks usually raise savings account rates too — but not always by the same amount. Large national banks often pay lower rates because they have many customers and lower costs per account. Smaller banks and online-only banks often pay higher rates because they have fewer physical locations to maintain and can pass those savings to customers.

Right now, online banks and credit unions tend to offer the highest rates on savings accounts. A bank's rate can also depend on the type of savings account: a regular savings account might pay 4.5%, while a money market account at the same bank might pay 5%. Always check the specific rate for the specific account type you are considering, because the name alone does not tell you what you will earn.

What happens when interest rates change

Banks can change their interest rates whenever they want, with no notice required. If you open a savings account at 5% and the bank drops the rate to 2% next month, you have no contractual right to the original rate. Your money is not locked in the way it is in a certificate of deposit (CD), where the rate is may provide for a set period.

When rates drop, your earnings drop with them. If you had $10,000 earning 5% and the rate falls to 2%, your annual earnings fall from $500 to $200. This is why some people move their money to a different bank when rates drop — a practice called rate shopping. You can move your savings to a bank offering a better rate at any time, though it takes a few days for the transfer to complete.

How much you actually need to earn meaningful money

Interest on savings accounts is real money, but the amounts are modest unless your balance is large. At 4.5% per year, you earn $45 on $1,000, $450 on $10,000, and $4,500 on $100,000. For someone building an emergency fund or saving for a near-term goal, the interest is a bonus, not the main reason to save. The main reason is to have the money when you need it.

If you are saving larger amounts — $50,000 or more — the interest becomes more meaningful. A difference of 1% between two banks means $500 per year on $50,000. Over five years, that is $2,500 in extra earnings just from choosing the higher-rate bank. For this reason, people with larger balances often spend time comparing rates across banks.

Where to find current interest rates

Banks publish their rates on their websites, usually on the savings account product page. You can also use rate comparison websites that list current rates across multiple banks, though these sites do not always include every bank. The rates you see online are usually the rates you will get if you open an account today, but confirm the rate before you complete your process, since rates change frequently.

When comparing rates, also check whether there are any fees that reduce your earnings. A $5 monthly maintenance fee on an account earning $3 per month in interest means you are losing money. Many banks waive fees if you keep a minimum balance or set up direct deposit, so read the fee schedule carefully.

The difference between savings accounts and other ways to earn money on your balance

A money market account is similar to a savings account but usually pays a slightly higher rate in exchange for requiring a larger minimum balance. A certificate of deposit (CD) locks your money away for a set period — three months, one year, five years — and pays a higher rate because the bank knows exactly how long it can use your money. If you withdraw from a CD early, you pay a penalty that can erase your interest earnings.

A high-yield savings account is straightforward a savings account at a bank that pays a higher rate than average. There is no special product or requirement — it is just a regular savings account with a better rate. The term "high-yield" is marketing language, not a legal category. An account paying 4.5% might be called high-yield at one bank and standard at another.

Frequently Asked Questions

Do I have to pay taxes on the interest I earn?

Yes. Interest on savings accounts is taxable income. If you earn $100 or more in interest in a year, the bank sends you a 1099-INT form and reports the earnings to the IRS. You report this on your tax return. The amount you owe in taxes depends on your overall income and tax bracket, so talk to a tax professional if you have questions about your specific situation.

What if I add money to my savings account during the year?

Your interest is calculated on your balance each day, so adding money increases what you earn going forward. If you start with $5,000 earning 4% and add $5,000 after six months, you earn roughly $100 on the first $5,000 for the full year, plus $50 on the second $5,000 for the remaining six months, for a total of about $150.

Can I lose money in a savings account?

No. Your balance is protected by the FDIC (Federal Deposit Insurance Corporation) up to $250,000 per account type per bank. You will not lose your principal, though inflation can reduce what your money can buy. If you earn 2% interest but inflation is 3%, your money is losing purchasing power even though the account balance is growing.

Why is my interest so low compared to what the bank advertises?

The advertised rate applies to new accounts or accounts meeting specific conditions — like maintaining a minimum balance or setting up direct deposit. Check your account agreement or call the bank to confirm what rate you are actually earning. Some banks also offer promotional rates for a limited time, then drop to a lower standard rate.

Should I move my money if another bank offers a higher rate?

If the rate difference is significant and you have a large balance, it may be worth moving. A 1% difference on $50,000 is $500 per year. Moving takes a few days and involves no cost to you — just initiate a transfer from the new bank and they handle the rest. For smaller balances under $10,000, the difference in earnings is usually modest enough that convenience matters more than rate.