What You Earn Depends on the Bank and the Rate Environment

The interest rate your bank pays on a savings account is not set by law or by any government agency — it is set by the bank itself, and it changes whenever the bank decides to change it. Right now, rates range from nearly zero at some large national banks to around 4% to 5% at online banks and credit unions, depending on the account type and the current federal funds rate. The rate you see advertised is the Annual Percentage Yield (APY), which accounts for how often the bank compounds your interest.

The amount you actually earn depends on three things: how much money sits in the account, what APY the bank offers, and how long the money stays there. A $10,000 balance at 0.01% APY earns about $1 per year. The same $10,000 at 4.5% APY earns about $450 per year. Banks change their rates based on what the Federal Reserve does with its benchmark rate, so the APY you lock in today may be lower or higher in three months.

Key Takeaways

  • Interest rates on savings accounts vary widely by bank and account type, ranging from under 0.1% at major national banks to 4% to 5% at online banks and credit unions.
  • The Annual Percentage Yield (APY) is the rate the bank advertises, and it already includes the effect of how often interest compounds.
  • Your actual earnings equal your balance multiplied by the APY divided by 365 days, calculated daily or monthly depending on the bank's compounding schedule.
  • Banks lower rates when the Federal Reserve raises its benchmark rate, and raise rates when the Fed cuts — so your rate will change over time even if you do nothing.
  • High-yield savings accounts at online banks and credit unions typically pay 10 to 50 times more interest than traditional savings accounts at large national banks.

How Banks Calculate and Pay Your Interest

Banks calculate interest one of two ways: daily or monthly. With daily compounding, the bank figures out how much interest you earned each day based on your balance that day, then adds that interest to your account. The next day, interest is calculated on the new, slightly larger balance. With monthly compounding, the bank waits until the end of the month to add all the interest at once.

Daily compounding earns you slightly more money because you earn interest on the interest sooner, but the difference is small unless your balance is very large. Most online banks and credit unions use daily compounding. Most traditional banks use monthly or quarterly compounding, which is one reason their rates look lower even when the advertised APY is similar.

The bank deposits your interest directly into your savings account on a schedule it sets — usually monthly or quarterly. You do not have to do anything to receive it. If you withdraw money before interest is posted, you lose the interest that would have been earned on that withdrawn amount.

Why Rates Differ So Much Between Banks

Large national banks like Chase, Bank of America, and Wells Fargo typically offer savings rates between 0.01% and 0.5% APY. Online banks like Marcus, Ally, and American Express Personal Savings offer rates between 4% and 5.35% APY. Credit unions often fall somewhere in between, usually 0.5% to 4.5% APY. The difference is not because one bank is better — it is because of how they operate.

National banks have thousands of branches, pay for television advertising, and employ large staffs. They pass those costs to customers by offering lower interest rates. Online banks have no physical branches and minimal advertising, so they can afford to pay higher rates and still make a profit. Credit unions are member-owned nonprofits, so they return profits to members through higher rates and lower fees.

The rate environment also matters. When the Federal Reserve keeps its benchmark rate high, all banks can afford to pay higher rates because they earn more on the money they lend out. When the Fed cuts rates, banks cut what they pay you. This happened in 2023 and 2024 — rates that were 5% in October 2023 dropped to 4% to 4.5% by mid-2024 as the Fed signaled rate cuts.

Money Market Accounts and Certificates of Deposit Pay Differently

A money market account is a hybrid between a savings account and a checking account. It typically pays a higher interest rate than a regular savings account — sometimes 0.5% to 1% higher — but requires a larger minimum balance (often $2,500 to $10,000) and limits how many withdrawals you can make per month. The interest calculation works the same way as a savings account: daily or monthly compounding, with the bank posting interest on a set schedule.

A Certificate of Deposit (CD) works differently. You agree to leave your money in the account for a fixed period — 3 months, 6 months, 1 year, 5 years, or longer. In exchange, the bank pays you a higher rate than a savings account. A 1-year CD might pay 4.5% to 5% APY, while a regular savings account at the same bank pays 4% to 4.5%. The catch is that if you withdraw the money before the CD matures, you pay a penalty — usually three to six months of interest.

CDs are useful if you know you will not need the money for a specific period and want to lock in a rate before rates drop. Savings accounts are more flexible because you can withdraw whenever you want without penalty.

How to Compare Rates Across Banks

To find the highest rate available, visit bank comparison websites like Bankrate, DepositAccounts, or NerdWallet, which list current rates from dozens of banks and update them daily. Look at the APY column, not the interest rate column — APY is what you actually earn. Check whether the rate requires a minimum balance and whether there are monthly fees that would eat into your earnings.

Once you find a bank offering a rate you like, visit that bank's website directly to confirm the rate is still current and to see the terms. Some banks offer promotional rates that last only a few months, then drop to a lower standard rate. Read the fine print to see whether the rate is may provide for a set period or whether the bank can lower it anytime.

Do not switch banks just for a 0.1% or 0.2% difference in rate — the effort is not worth the extra few dollars per year. But if you find a bank paying 1% or more higher than where your money currently sits, moving it makes sense. The transfer usually takes three to five business days, and you do not lose any interest during the move.

What Happens to Your Interest When Rates Change

Banks can lower your interest rate anytime, usually with 30 days' notice. They do this by sending you a notice in the mail or through your online account. The new rate takes effect on the date the bank specifies. You do not have to accept the lower rate — you can withdraw your money and move it to a bank offering a higher rate. Many people do this when rates drop significantly.

Banks can also raise your rate, though this is less common. When the Federal Reserve raises its benchmark rate, competitive banks (especially online banks) often raise their rates within days to attract new customers. Traditional banks raise rates more slowly and by smaller amounts. If your bank raises your rate, the new rate applies automatically to your next interest posting.

If you want to protect yourself from rate drops, consider a CD. The rate on a CD is locked in for the entire term — if you buy a 1-year CD at 5% APY, you earn 5% for the full year even if the bank lowers its rate to 3% after three months. The tradeoff is that you cannot access the money without paying a penalty.

How Interest Affects Your Taxes

Interest you earn on a savings account is taxable income. If you earn $100 or more in interest during the year, the bank sends you a Form 1099-INT in January, which you must include when you file your taxes. The interest is taxed at your ordinary income tax rate, which can be 10% to 37% depending on your total income and tax bracket.

This means that a savings account earning 4.5% APY does not actually earn you 4.5% after taxes. If you are in the 24% tax bracket, your real after-tax return is closer to 3.4%. This is why some people use tax-advantaged accounts like Roth IRAs or Health Savings Accounts (HSAs) for savings — the interest earned in those accounts is not taxed, or is taxed differently.

Keep records of your interest earnings throughout the year so you can report them accurately when you file taxes. Most banks show your year-to-date interest in your online account dashboard.

Frequently Asked Questions

Can I lose money in a savings account if interest rates drop?

No. Your principal — the money you deposited — is never at risk in a savings account. If interest rates drop, you simply earn less interest going forward. Your balance will not shrink unless you withdraw money or the bank charges fees that exceed your interest earnings.

Why do online banks pay so much more interest than big banks?

Online banks have lower operating costs because they have no physical branches and minimal staff. They pass those savings to customers through higher interest rates. Big banks have thousands of branches and pay for advertising, so they need to offer lower rates to remain profitable.

Is my money safe if I move it to an online bank for a higher rate?

Yes, as long as the bank is FDIC-insured. Check the bank's website or the FDIC's BankFind tool to confirm. FDIC insurance protects up to $250,000 per account holder per bank, so your money is safe even if the bank fails.

What is the difference between APY and APR?

APY (Annual Percentage Yield) includes the effect of compounding — how often interest is added to your account. APR (Annual Percentage Rate) does not. For savings accounts, always compare APY to APY, not APR. Banks advertise APY for savings accounts because it is the higher number.

Should I move my money to a CD to lock in the current rate?

Only if you are confident rates will drop and you will not need the money for the CD term. If rates rise or you need the money early, you will pay a penalty. If you want flexibility, keep your money in a high-yield savings account — you can move it anytime rates drop at your bank.