Banks set savings account rates based on the Federal Reserve's benchmark rate, their own funding costs, and how much competition they face for deposits

When the Federal Reserve raises or lowers its benchmark interest rate—the rate at which banks lend to each other overnight—savings account rates follow within weeks or months. But your bank does not have to match the Fed rate exactly. Instead, banks use it as a starting point, then adjust based on how much it costs them to get money (through deposits, borrowing, or other sources) and how badly they need new deposits right now. A bank flush with deposits might offer lower rates. A bank that needs cash fast might offer higher ones. Online banks typically offer more because they have lower overhead costs than brick-and-mortar branches.

The rate you see advertised is the bank's choice, not a government mandate. Two banks in the same city can offer completely different rates on identical savings accounts. Your own rate may also differ from the advertised rate if you opened the account years ago—banks usually grandfather existing customers at their old rate and only apply new rates to new accounts or when you move money into a different product.

Key Takeaways

  • The Federal Reserve's benchmark rate is the primary driver of savings account rates, but banks decide how much of that rate to pass on to you.
  • Online banks typically offer higher rates than traditional banks because they spend less on physical branches and staff.
  • Banks that need deposits urgently will offer higher rates; banks with plenty of deposits may offer lower ones.
  • Your rate can stay the same even when the Fed moves, and it can change without notice unless your account terms say otherwise.
  • Shopping around for rates matters because the difference between 0.01% and 4.50% APY on $10,000 is roughly $450 per year.

The Federal Reserve's role in setting the floor

The Federal Reserve does not set savings account rates directly. Instead, it sets the federal funds rate—the interest rate at which banks lend reserve balances to each other overnight. This rate is a target range, not a fixed number. As of early 2024, the Fed has been raising and lowering this rate based on inflation and employment. When the Fed raises the funds rate, banks' cost of borrowing goes up, so they tend to raise the rates they offer on savings accounts to attract deposits. When the Fed cuts the rate, banks usually cut savings rates too.

The lag between a Fed move and a change in your savings rate is real. Banks do not reprogram their systems instantly. Most savings account rates change within two to four weeks of a Fed announcement, though some banks move faster and some move slower. A few banks also hold rates steady for months even after the Fed moves, betting that customers will not shop around.

How a bank's funding costs shape what it offers you

Banks need money to lend out. They get that money from deposits (your savings account), from borrowing in the wholesale market, and from retained earnings. When deposits are cheap to get—meaning lots of people are putting money in savings accounts—a bank does not need to offer high rates. When deposits are hard to get, banks raise rates to compete for your cash.

A bank also looks at what it costs to borrow money elsewhere. If a bank can borrow from other banks or from the Federal Reserve at a low rate, it does not need to offer high rates on savings to fund itself. If borrowing costs spike, the bank will raise savings rates to attract deposits instead of paying more to borrow. This is why savings rates sometimes rise faster than the Fed rate itself—banks are competing fiercely for deposits because other funding sources have gotten expensive.

Competition and market conditions drive the spread

The difference between what the Fed charges banks and what banks charge you is called the spread. In a competitive market with many banks offering savings accounts, spreads are narrow—banks pass most of the Fed rate on to you. In a less competitive market, spreads are wider—banks keep more of the rate for themselves.

Online banks have dramatically narrowed spreads in recent years because they can operate with minimal overhead. An online bank with no branches, no tellers, and no physical real estate can afford to offer 4% APY when a traditional bank offers 0.5% on the same product. This forces traditional banks to either raise their rates or lose customers. During periods when the Fed rate is high, this competition is most visible—you will see online banks advertising rates that seem shockingly good compared to what your local bank offers.

Market conditions also matter. When the economy is strong and businesses are borrowing heavily, banks can lend out deposits at high rates and do not need to offer high savings rates to attract money. When the economy slows and lending demand drops, banks raise savings rates to pull in deposits they can hold or use for other purposes.

Why your rate might not change when the Fed moves

Banks are not required to change your savings rate when the Federal Reserve moves. Your account agreement usually says the bank can change rates at any time with notice (often just 30 days), but it does not say the bank must change rates in lockstep with the Fed. Some banks hold rates steady for weeks or months after a Fed move, hoping customers do not notice or do not bother to switch.

If you opened a savings account years ago at a high rate, the bank might never lower it even if the Fed cuts rates—but it also might lower it without warning. Read your account agreement to see what it says about rate changes. Most agreements give the bank broad power to change rates, though a few accounts (usually promotional ones) lock in a rate for a set period.

How to find out what determines your specific rate

Your bank's website usually shows the current advertised rate for new accounts, but not the formula the bank uses to set it. If you want to understand why your rate is what it is, call the bank and ask: "What factors determine the rate on this account?" The answer will likely be vague—"market conditions" or "competitive rates"—because banks do not publish their exact methodology. But asking forces the bank to acknowledge that rates are a choice, not a law of nature.

You can also compare your rate to what other banks are offering. If your bank is paying 0.5% and online banks are paying 4%, you know your bank is choosing to keep the spread wide. This is useful information for deciding whether to move your money.

What happens to rates when the economy changes

Savings rates move in cycles tied to the broader economy. When inflation is high, the Fed raises rates aggressively, and savings rates spike—this is when you see headlines about "best savings rates in years." When inflation cools and the Fed cuts rates, savings rates fall. This cycle repeats every few years.

During recessions, the Fed usually cuts rates to encourage borrowing and spending. Savings rates fall sharply because banks do not need deposits as urgently—they are not lending as much. This is frustrating for savers, but it is how the system works. The Fed prioritizes economic growth over savings account returns.

Frequently Asked Questions

Why does my bank's rate differ from the Fed rate?

The Fed rate is what banks charge each other; it is not a rate offered to customers. Your bank uses the Fed rate as a reference point, then adjusts based on its own costs, competition, and how much it needs deposits. The difference between the Fed rate and your rate is the bank's profit margin on that account.

Can a bank lower my rate without telling me?

Most account agreements allow the bank to change rates with notice, usually 30 days. Check your agreement to see what it says. Some banks email notice; others mail it or post it on the website. If you miss the notice, you may not realize your rate dropped until you check your statement.

Do all banks raise rates when the Fed raises rates?

No. Banks can and do hold rates steady even after the Fed moves. Some banks raise rates quickly; others wait weeks or months. Online banks tend to move faster because they compete directly on rate. Traditional banks sometimes move slower because they rely on branch customers who do not shop around as much.

What is the best time to open a savings account?

When the Fed is in a cutting cycle (lowering rates), rates are falling, so opening sooner is better than later. When the Fed is in a raising cycle, rates are climbing, so waiting a few weeks might get you a higher rate. But the difference between opening now and opening in a month is usually small—a few basis points at most. The bigger factor is choosing a bank with competitive rates, which you can do anytime.

Will my rate stay the same forever?

No. Banks reserve the right to change rates at any time with notice. Your rate could stay the same for years, or it could change every few months. The only way to lock in a rate is to move money into a certificate of deposit (CD), which guarantees a fixed rate for a set term.