Yes, APY changes regularly, and your bank controls when

Your savings account APY is not locked in. Banks change it whenever they want, and most do so multiple times a year. The rate you see today may be different next month. The change happens automatically—you do not have to do anything, and your bank is not required to notify you in advance, though many do send a notice after the change takes effect.

The reason is straightforward: banks set savings rates based on what the Federal Reserve does with its benchmark interest rate, called the federal funds rate. When the Fed raises or lowers that rate, banks adjust what they pay depositors. A bank might raise your APY when the Fed increases rates, or cut it when the Fed lowers them. Some banks move faster than others, and some move in the opposite direction from what you might expect.

Your money stays in the account through all of this. The APY change affects only how much interest you earn going forward, not the balance you already have.

Key Takeaways

  • Banks change savings APY on their own schedule, usually several times per year, without advance notice required.
  • The Federal Reserve's interest rate decisions are the main driver, but banks also respond to competition and their own funding needs.
  • A rate cut means you earn less interest on new deposits and existing balances going forward, but your principal stays the same.
  • You can move your money to a different bank if the new rate no longer meets your needs, though you may face a penalty if the account has a term.

How the Federal Reserve's rate decisions flow to your savings account

The Federal Reserve sets a target range for the federal funds rate—the rate at which banks lend to each other overnight. This is not a rate that directly applies to your savings account, but it is the anchor that moves everything else. When the Fed raises its target range, banks have more incentive to raise what they pay on savings because they can charge more for loans. When the Fed cuts, banks cut savings rates because loan demand falls and they need less customer deposits.

The timing is not automatic. A bank might raise savings rates within days of a Fed increase, or it might wait weeks. Some banks raise rates quickly to attract new deposits, while others wait to see if the Fed will raise again. A bank might also cut rates faster than it raises them—this is common when the Fed starts lowering, because banks want to protect their profit margins.

The relationship is real but not one-to-one. If the Fed raises rates by 0.5 percentage points, your bank might raise your APY by 0.3 points, or 0.7 points, or not at all. Banks compete differently in different markets, and some prioritize keeping existing customers while others chase new ones.

Why banks sometimes cut rates even when the Fed has not moved

Banks also change savings rates based on how much money they have on hand and how much they need. If a bank has taken in more deposits than it can lend out profitably, it may cut rates to slow new deposits. If a bank needs more deposits to fund loans, it may raise rates to attract them. These moves happen independent of what the Fed does.

Competition matters too. If a competitor bank launches a high-yield savings account at 4.5% APY and your bank is paying 3.8%, your bank may raise its rate to keep customers from leaving. Or it may not, if it decides the cost is too high. Banks make different bets about which customers are worth keeping.

Economic conditions also play a role. During periods of high inflation, banks may raise rates faster than the Fed moves, because they expect the Fed to keep raising. During recessions, banks may cut rates in anticipation of Fed cuts that have not happened yet.

What happens to your money when the APY changes

The change affects only the interest you earn from that point forward. If you have $10,000 in a savings account earning 4.0% APY and the bank cuts the rate to 3.5%, you still have $10,000. The interest you already earned stays in the account. Only the interest you earn on future days is calculated at the new rate.

The new rate applies when ready to all balances in the account—both money that was there before the change and any new deposits you make after. You do not have separate "old money" and "new money" earning different rates. The account earns one rate at any given time.

Interest on savings accounts is usually compounded daily, meaning the bank calculates interest on your balance each day and adds it to your account. The APY you see is an annualized figure—what you would earn in a year if the rate stayed constant and you made no deposits or withdrawals. In reality, the rate changes and you may add or withdraw money, so your actual earnings will differ.

How to track rate changes and decide whether to move your money

Most banks publish their current rates on their website, and you can check yours anytime. Some banks send email or text notifications when rates change, but this is optional—you cannot rely on being notified. The safest approach is to check your bank's website once a month or set a calendar reminder.

If your bank cuts the rate and you find a better rate elsewhere, you can move your money. Open an account at the new bank, then transfer the balance from your old account. The transfer usually takes three to five business days. There is no penalty for moving money out of a savings account—the penalty (if any) applies only to certain products like certificates of deposit (CDs) that have a fixed term.

Moving money makes sense if the rate difference is meaningful to you. The difference between 3.5% and 4.0% APY is 0.5 percentage points. On $10,000, that is $50 per year. Whether that is worth the effort of switching banks is a personal decision. On $100,000, the same difference is $500 per year, which many people would consider worth switching for.

Keep in mind that rates can move in either direction. A bank that cuts rates today might raise them again in six months if the Fed raises rates. Chasing the highest rate at any given moment can mean switching banks frequently, which may not be worth the hassle if the differences are small.

The difference between variable-rate and fixed-rate savings products

A regular savings account has a variable APY—the bank can change it anytime. This is what most people have. The rate you see today is not may provide for any length of time.

A certificate of deposit (CD) has a fixed APY for a set term—usually three months, six months, one year, or longer. The bank cannot change the rate during that term. In exchange, you agree not to withdraw the money before the term ends. If you do withdraw early, you pay a penalty, usually a few months of interest. CDs are useful if you want to lock in a rate you like and do not need the money for a while.

Money market accounts are a middle ground—they have variable rates like savings accounts, but they often pay higher rates and may require a larger balance. The APY can still change anytime.

What to watch for when comparing rates across banks

When you see a bank advertising a high APY, check whether it applies to all balances or only balances above a certain amount. Some banks pay 4.5% on balances up to $25,000 and 2.0% on anything above that. Others pay the same rate on all balances. The advertised rate is usually the highest one, so read the fine print.

Also check whether the rate is promotional. Some banks offer a high rate for a limited time to attract new customers, then cut it after a few months. The bank should disclose this, but the disclosure is sometimes buried in the terms and conditions.

Finally, confirm that the bank is FDIC-insured. This means your deposits are protected up to $250,000 if the bank fails. Most banks are FDIC-insured, but some online banks are not. The FDIC website has a tool to check whether a specific bank is insured.

Frequently Asked Questions

Can a bank lower my APY without telling me?

Yes. Banks are not required to notify you in advance of a rate cut. Many do send a notice after the change takes effect, but this is a courtesy, not a legal requirement. The best way to stay informed is to check your bank's website regularly or set a monthly reminder.

If my bank cuts rates, can I get my old rate back?

No. Once the rate changes, it applies to your entire account balance going forward. You cannot lock in the old rate. If you want to lock in a rate, you would need to move the money to a CD before the rate cuts, but you cannot predict when a cut will happen.

Why do some banks raise rates faster than others when the Fed raises?

Banks compete for deposits differently. A bank that needs more deposits will raise rates quickly to attract them. A bank that has plenty of deposits may wait or raise rates only slightly. Banks also have different profit targets and different views on how long the Fed will keep rates high.

Does the APY change affect money I already earned as interest?

No. Interest you have already earned stays in your account and is not recalculated. Only interest you earn from the day of the rate change forward is calculated at the new rate.

Should I move my money every time my bank cuts rates?

Not necessarily. Moving money takes time and effort, and the difference between rates may be small. If your bank cuts from 4.0% to 3.8% and you have $5,000, the difference is $10 per year. Whether that is worth switching banks is up to you. Larger balances make switching more worthwhile.