Interest rates determine your earnings, and they change constantly

The money you make in a savings account comes from interest—a percentage of your balance that the bank pays you. How much you earn depends on three things: the interest rate the bank offers, how much money you keep in the account, and how long it stays there. A bank might offer 4.5% annual interest one month and 4.25% the next, so the rate you see today will not be what you earn next year.

The actual dollar amount varies widely. Someone with $1,000 in an account earning 4% annually makes about $40 per year, or roughly $3.33 per month. Someone with $10,000 in the same account makes about $400 per year. The math is straightforward: multiply your balance by the interest rate, then divide by 12 if you want the monthly amount. But the rate itself—the percentage—is what changes, and that change directly affects your earnings.

Banks set their own rates based on what the Federal Reserve does with its benchmark interest rate. When the Fed raises rates, banks usually raise savings account rates within weeks or months. When the Fed cuts rates, banks cut theirs too, often faster. This means your earnings can drop without you doing anything wrong.

Key Takeaways

  • Your earnings equal your account balance multiplied by the interest rate divided by 12 (for monthly earnings), and the rate changes based on what the Federal Reserve does.
  • High-yield savings accounts typically pay 4% to 5.35% annually, while traditional bank savings accounts often pay 0.01% to 0.05%.
  • The bank compounds your interest—meaning you earn interest on your interest—usually daily or monthly, which slightly increases your total earnings.
  • You pay income tax on all interest you earn, so your actual take-home amount is less than the interest rate suggests.

High-yield accounts pay significantly more than traditional savings accounts

A high-yield savings account (HYSA) is where most of your earnings come from if you want to make money on savings. These accounts, offered by online banks and some credit unions, currently pay between 4% and 5.35% annually. A traditional savings account at a brick-and-mortar bank typically pays 0.01% to 0.05%—roughly 100 times less.

The difference is real money. With $5,000 in a traditional savings account at 0.03%, you earn about $1.50 per year. The same $5,000 in a high-yield account at 4.75% earns about $237.50 per year. That gap widens as your balance grows. With $25,000, you earn $7.50 in the traditional account and about $1,187.50 in the high-yield account.

Online banks offer higher rates because they have lower overhead costs—no physical branches, fewer employees, lower rent. They pass those savings to customers through better interest rates. Credit unions sometimes offer competitive rates too, though they vary by institution and membership requirements.

Compound interest means you earn money on your earnings

Banks don't just pay interest once a year. They compound it—usually daily or monthly—which means they add interest to your balance, and then the next time they calculate interest, they pay you interest on that interest too. This compounds your earnings over time, though the effect is small in the first year.

Here's how it works in practice. Say you have $10,000 in an account earning 4.8% annually, compounded daily. The bank divides 4.8% by 365 days, giving you roughly 0.0131% per day. On day one, you earn about $1.31. On day two, you earn interest on $10,001.31, not just $10,000—a tiny difference, but it compounds. By the end of the year, daily compounding adds roughly $24 more than if the bank paid straightforward interest once annually.

The frequency of compounding matters most when you keep money in the account for years. A $10,000 balance earning 4.8% compounded daily grows to about $10,492 after one year. Compounded monthly, it grows to about $10,490. The difference is small, but daily compounding is always slightly better than monthly, which is better than quarterly.

Taxes reduce your actual earnings

The interest you earn is taxable income. The bank will send you a 1099-INT form at tax time reporting what you earned, and you must report that amount on your federal tax return. Depending on your tax bracket, you'll owe somewhere between 10% and 37% of your interest earnings to the IRS, plus any state income tax your state charges.

This means your real take-home earnings are lower than the interest rate suggests. If you earn $500 in interest and you're in the 24% tax bracket, you keep about $380 and pay $120 in federal taxes. Some states also tax interest income, which reduces your earnings further. A few states—including Florida, Texas, and Wyoming—don't tax income at all, so residents keep more of what they earn.

The tax hit is one reason people sometimes move money to tax-advantaged accounts like Roth IRAs or 529 college savings plans, where interest earnings grow tax-free. But those accounts have contribution limits and rules about when you can withdraw the money.

Your balance and how long you keep money in the account matter

The more money you have in the account, the more interest you earn—that's straightforward multiplication. But how long you keep the money there also affects your total earnings, because interest compounds over time.

A $5,000 balance earning 4.5% for one year earns about $225. The same $5,000 earning 4.5% for five years earns about $1,238 total (not $1,125), because each year's interest compounds into the next year's calculation. After 10 years, it earns about $2,826. The longer the money sits, the more the compounding effect adds up.

This is why moving money between accounts can cost you. If you move $10,000 from a high-yield account to a checking account that pays no interest, you stop earning that interest when ready. Even a few weeks of delay costs real money—roughly $4 per week at 4.8% annual interest.

Rate changes happen frequently and affect your future earnings

Banks change their interest rates regularly, and you have no control over when or by how much. When the Federal Reserve raised rates aggressively from 2022 to 2023, high-yield savings accounts jumped from around 0.5% to over 5% within months. Customers who moved money to high-yield accounts during that period locked in much higher earnings than those who waited.

The opposite happens when rates fall. If the Fed cuts rates, banks typically cut their savings rates within weeks. An account paying 5% today might pay 4% in six months. Your earnings drop automatically, and you don't have to do anything wrong for it to happen. This is why some people move money between accounts chasing the highest rate—a practice called "rate shopping."

You can track current rates on comparison websites like Bankrate, DepositAccounts, or NerdWallet, which update daily. But rates change so frequently that the rate you see today may not be what you get when you open the account tomorrow.

Minimum balances and account restrictions can affect what you earn

Some savings accounts require a minimum balance to earn the advertised interest rate. If your balance drops below that minimum, the bank may pay you a much lower rate or charge you a monthly fee. A few accounts have no minimum, but most online banks require at least $1 to open and maintain the account.

Some accounts also limit how many withdrawals you can make per month before fees kick in. Federal rules used to cap savings account withdrawals at six per month, but that rule was suspended in 2020. Banks can still impose their own limits, though most high-yield accounts now allow unlimited withdrawals without penalty. Check the account terms before you open one.

A few accounts offer tiered interest rates—meaning the rate you earn depends on how much money you have in the account. A bank might pay 4.5% on balances up to $25,000 and 4.75% on balances above that. If you have a large balance, tiered accounts can pay more than flat-rate accounts.

Frequently Asked Questions

Can I lose money in a savings account?

No. Your principal—the money you deposit—is protected by FDIC insurance up to $250,000 per account at FDIC-insured banks. You cannot lose your deposit. Interest rates can fall, so your earnings may be lower than you expected, but your original money stays intact.

How often does the bank pay interest?

Banks compound interest daily or monthly, but they typically deposit the interest into your account monthly. Some accounts deposit it quarterly or annually. Check your account terms to see when interest hits your balance. Daily compounding is better than monthly, even though both deposit the total monthly.

What's the difference between APY and APR for savings accounts?

APY (annual percentage yield) includes the effect of compounding, while APR (annual percentage rate) does not. Banks must show you the APY on savings accounts, which is the number that matters for comparing accounts. APR is used for loans, not savings.

Do I have to report savings account interest on my taxes?

Yes. If you earn $10 or more in interest during the year, the bank sends you a 1099-INT form and you must report it on your federal tax return. Even small amounts are technically taxable, though the IRS rarely pursues amounts under $10.

Should I move my money to chase higher rates?

Moving money to a higher-rate account makes sense if the difference is significant and the new bank is FDIC-insured. Moving $10,000 from 0.5% to 4.5% saves you roughly $400 per year. But moving frequently costs time and attention. Once you find a competitive rate, you can usually stay put unless rates drop sharply.