Banks set savings rates based on the federal funds rate, their own funding costs, and how much they want to attract deposits

When the Federal Reserve raises or lowers its benchmark interest rate, banks don't automatically pass that change to your savings account. Instead, banks use the Fed's rate as a starting point and then adjust based on three things: how much it costs them to borrow money, how much competition they face for deposits, and how badly they need new customer money right now. A bank offering 4.5% APY on savings is making a deliberate choice about how much of its profit margin it's willing to share with depositors.

The federal funds rate is the interest rate banks charge each other for overnight loans. When the Fed raises this rate, banks' own borrowing costs go up, which gives them more room to offer higher rates to savers. When the Fed cuts rates, banks face less pressure to compete and often lower savings rates faster than they raised them. But the relationship is not automatic—a bank can choose to offer 0.01% APY even when the Fed rate is 5.25%, and some do.

Key Takeaways

  • The Federal Reserve's benchmark rate sets a ceiling for what banks can profitably offer, but banks choose how much of that rate to pass on to savers.
  • Banks that need deposits urgently (often online banks with low overhead) offer higher rates; banks with stable customer bases offer lower rates.
  • Your bank's rate can change at any time without notice on savings accounts, even if the Fed rate stays the same.
  • Shopping around for a higher rate is worth doing because the difference between 0.01% and 4.5% on $10,000 is roughly $450 per year.

How the Fed rate creates room for bank rates

The Federal Reserve doesn't set the rate your bank pays you. It sets the federal funds rate—the rate banks charge each other for short-term loans. When this rate is high, banks can afford to pay savers more because they're earning more on their own investments and loans. When the rate is low, banks have less incentive to offer high savings rates because their own income is lower.

Think of it this way: if a bank borrows money overnight at 5% and lends it out at 6%, it makes 1% profit. If the Fed rate drops to 2%, the bank might borrow at 2% and lend at 3%, still making 1% profit but with less room to share with savers. Banks use this spread to cover their operating costs, pay employees, and generate profit. A bank offering 4.5% APY is betting it can still make money after paying you that rate.

Competition and deposit demand drive individual bank rates

Two banks facing the same Fed rate can offer completely different savings rates. The difference comes down to how much each bank needs your money. Online banks like Marcus, Ally, and Wealthfront have low overhead—no physical branches, fewer employees—so they can afford to offer 4% or higher on savings accounts. Traditional banks with hundreds of branches and thousands of employees have higher costs and often offer 0.01% to 0.5% on the same account type.

Banks also adjust rates based on how much deposit money they already have. A bank flush with customer deposits might lower its savings rate because it doesn't need more money right now. A bank that's losing deposits to competitors or needs cash to fund loans might raise its rate to attract new accounts. This is why rates can shift even when the Fed rate stays flat—your bank's internal situation changed, not the market.

Seasonal patterns matter too. Banks often raise rates in the fall and winter when people have holiday bonuses and year-end savings to deposit. Rates may drop in spring and summer when banks have enough cash on hand.

Banks can change your rate anytime on savings accounts

Unlike a fixed-rate CD or mortgage, a savings account rate is not locked in. Your bank can lower your APY tomorrow without your permission, and it only has to notify you—usually by email or a notice in your account. Some banks give 30 days' notice; others give none. You have no contractual right to keep the old rate.

This is why a savings account that paid 4.5% last year might pay 0.5% today. The Fed may have cut rates, or your bank may have simply decided it has enough deposits and doesn't need to compete anymore. You'll find out when you check your statement or log in to your account.

The flip side: when rates rise, banks are slow to raise savings rates even though they're earning more. This is where shopping around becomes important. If your bank is paying 0.5% and online banks are paying 4.5%, switching accounts could earn you hundreds of dollars per year on the same balance.

What happens to your rate when the Fed moves

When the Federal Reserve raises its benchmark rate, banks typically raise savings rates within days or weeks—but not always by the full amount. If the Fed raises rates by 0.5%, your bank might raise your rate by 0.25% or 0.1%, keeping the extra spread for itself. Banks are competing for deposits, so they do raise rates, but they don't pass along the entire increase.

When the Fed cuts rates, banks lower savings rates much faster and often by more than the Fed cut. If the Fed cuts by 0.5%, your bank might cut your rate by 0.75%, widening its profit margin. This asymmetry is why savers often feel like rates go up slowly and down quickly—because they do.

Why your bank's rate might differ from competitors

Three banks in the same market, facing the same Fed rate, can offer three different savings rates. Here's why:

  • Business model: Online banks have lower costs and can afford to offer higher rates. Banks with physical locations need to cover rent, utilities, and teller salaries.
  • Deposit mix: A bank that relies on checking accounts for most of its deposits doesn't need to pay high savings rates. A bank that depends on savings deposits to fund loans will pay more to attract them.
  • Loan demand: If a bank has more loan requests than it has cash to lend, it will raise savings rates to pull in more deposits. If loan demand is weak, it won't.
  • Profit targets: Some banks prioritize growth and accept lower profit margins. Others prioritize profit and accept slower growth.
  • Risk appetite: Banks that invest in riskier assets can afford to pay savers less because they're earning more elsewhere. Conservative banks pay more to savers because they're not earning as much on investments.

How to find out what your bank is paying and what you could earn elsewhere

Your current savings rate is listed in your account statement, in your online banking portal, or by calling your bank. The rate shown is your APY (annual percentage yield), which includes compounding. Write down your current rate and balance, then check what online banks are offering. Sites like Bankrate, DepositAccounts, and NerdWallet list current rates across banks, updated daily.

The math is straightforward: if you have $10,000 in savings and your bank pays 0.5% APY, you earn $50 per year. If you move that money to a bank paying 4.5% APY, you earn $450 per year—a difference of $400. That's real money, and it takes 10 minutes to switch accounts. Many online banks make the transfer process automatic; you give them your old bank's routing number and account number, and they pull the money over.

Keep in mind that rates change constantly. A bank offering 4.5% today might offer 3.5% in three months. The highest rate today won't stay the highest forever. But at any given moment, shopping around tells you whether you're being paid fairly for your deposits.

Frequently Asked Questions

Why did my savings rate drop when the Fed rate stayed the same?

Your bank changed its rate because its internal situation changed, not because of the Fed. It may have accumulated enough deposits and no longer needs to compete for new money. It may have reduced loan demand. Or it may have simply decided to widen its profit margin. Banks can adjust rates anytime on savings accounts.

If I move my money to a higher-rate bank, will I lose my old account?

No. You can keep your old account open and move money to a new bank, or close the old account after the transfer completes. Keeping both open doesn't hurt your credit. Some people keep accounts at multiple banks to take advantage of different rates or features.

Do all banks raise rates when the Fed raises rates?

Most do, but not all, and not by the same amount. A bank can choose to keep its rate flat even when the Fed raises rates. This is rare because it makes the bank uncompetitive, but it happens. Online banks typically raise rates faster than traditional banks because they're competing harder for deposits.

Can a bank lower my rate without telling me?

No. Banks must notify you before lowering your savings rate, usually by email or account notice. But they only have to give notice—they don't need your permission. The notification might come the day before the change takes effect.

Is it worth switching banks for a 1% higher rate?

Yes, if you have a substantial balance. On $50,000, a 1% difference is $500 per year. On $5,000, it's $50 per year. If the switch takes 15 minutes and you're earning $500 more annually, that's worth doing. If you're earning $50 more, it depends on whether you value the convenience of staying put.