The bank prime rate is the interest rate that banks charge their most creditworthy customers for loans, and it moves up or down based on decisions made by the Federal Reserve.

The prime rate is not set by any single authority—instead, it follows the federal funds rate, which is the interest rate that banks charge each other for overnight loans. When the Federal Reserve raises or lowers the federal funds rate, banks typically raise or lower the prime rate by the same amount within a day or two. The prime rate then becomes the baseline that banks use to calculate interest on credit cards, home equity lines of credit, adjustable-rate mortgages, and some savings products.

You will not see the prime rate applied directly to your checking or savings account at most banks. Instead, it affects what you earn or pay indirectly. Banks use the prime rate as a reference point: they add a margin (their own markup) on top of it to set the rates they offer to regular customers. A bank might offer you a savings account at prime rate minus 2 percent, or a credit card at prime rate plus 8 percent. When prime moves, those rates move with it.

Key Takeaways

  • The prime rate is set by banks collectively in response to Federal Reserve decisions, not by the Fed itself, and it changes whenever the Fed adjusts the federal funds rate.
  • Your savings account interest and credit card APR are usually tied to the prime rate plus or minus a fixed margin that your bank sets.
  • When the prime rate rises, banks typically raise credit card rates quickly but may take weeks or months to raise savings rates.
  • You can find the current prime rate in the Wall Street Journal or on the Federal Reserve's website, and it changes only when the Fed meets to set monetary policy.

How the Federal Reserve controls the prime rate

The Federal Reserve does not directly set the prime rate. Instead, it sets the federal funds rate—the rate at which banks lend reserve balances to each other overnight. Banks then use this rate as a signal for where to set the prime rate. In practice, the prime rate moves almost immediately after a Fed decision, and it stays at a fixed spread above the federal funds rate.

The Fed meets eight times per year to review economic conditions and decide whether to raise, lower, or hold the federal funds rate steady. When inflation is high, the Fed typically raises rates to cool down borrowing and spending. When the economy is weak, the Fed lowers rates to encourage borrowing and investment. Banks watch these meetings closely because a rate change directly affects their costs and the rates they offer to customers.

Why your savings rate and credit card rate move differently

Banks are required by law to pass rate increases on credit cards to customers relatively quickly—usually within one or two billing cycles. But there is no requirement to raise savings account rates at the same speed. In practice, banks often raise credit card rates within days of a prime rate increase but delay raising savings rates by weeks or months, or raise them by a smaller amount.

This happens because banks make more money when the gap between what they pay depositors and what they charge borrowers grows wider. When rates rise, banks face pressure to raise credit card rates (because customers will switch cards if rates stay low), but they have less pressure to raise savings rates (because most depositors do not shop around as actively). The reverse is true when rates fall: banks cut savings rates quickly but drag their feet on credit card rates.

Where to find the current prime rate

The prime rate is published daily in the Wall Street Journal's Money and Investing section and on the Federal Reserve's website. The rate is also listed on most financial news sites and on bank websites. Because the prime rate is set by banks in response to Fed decisions, it does not change on a fixed schedule—it only moves when the Fed announces a change to the federal funds rate.

You can also call your bank and ask what the current prime rate is and what margin they add to it for your specific product. Knowing this spread helps you understand how much room your bank has to move your rate if the prime rate changes. A bank that offers a savings account at prime minus 2 percent will lower your rate by 2 percent if prime falls by 2 percent, but a bank offering prime minus 4 percent will lower your rate by 4 percent.

How prime rate changes affect different account types

Savings accounts and money market accounts often have rates tied to the prime rate, though the connection is not always direct or immediate. When the prime rate rises, these accounts may earn more interest, but the increase may not show up in your account for several weeks. When the prime rate falls, banks often cut savings rates faster than they cut credit card rates, so your earnings drop quickly.

Adjustable-rate mortgages and home equity lines of credit are also tied to the prime rate through an index. Your rate on these products will adjust on a schedule set by your lender—usually once a year or once every six months—and the adjustment will reflect changes in the prime rate since your last adjustment date. Fixed-rate mortgages and fixed-rate home equity loans are not affected by prime rate changes at all.

Credit cards and variable-rate personal loans are the most directly affected by prime rate changes. Credit card companies can raise your APR within one or two billing cycles of a prime rate increase, and they often do. If you carry a balance on a credit card, a rise in the prime rate means you will pay more interest on that balance going forward.

The difference between prime rate and APR

The prime rate is a reference rate that banks use as a starting point. Your actual interest rate—called the Annual Percentage Rate or APR—is the prime rate plus the bank's margin. For example, if the prime rate is 5.50 percent and your bank adds a 9 percent margin to credit card rates, your APR would be 14.50 percent. If the prime rate rises to 6.00 percent, your APR would rise to 15.00 percent.

The margin your bank adds depends on your creditworthiness, the type of product, and the bank's own pricing strategy. A customer with excellent credit might get a credit card at prime plus 6 percent, while a customer with fair credit might get prime plus 12 percent. Banks do not have to offer the same margin to all customers, and they can change the margin they offer to new customers at any time—though they cannot change the margin on an existing account without notice.

What happens when the Federal Reserve pauses rate changes

When the Federal Reserve stops raising or lowering rates and holds the federal funds rate steady, the prime rate also stays flat. During these periods, your credit card APR and savings rate will not change unless your bank decides to adjust its margin—which is rare. The Fed may hold rates steady for months or even years while monitoring economic conditions.

Periods of stable rates can be a good time to lock in a fixed-rate loan or to move your savings to a bank offering a higher margin above prime. Once rates start moving again, the advantage of that locked-in rate or that higher margin may disappear. Watching Fed announcements helps you anticipate when the prime rate might move and plan accordingly.

Frequently Asked Questions

Does the prime rate affect my checking account?

Most checking accounts do not earn interest, so the prime rate does not affect them. Some banks offer interest-bearing checking accounts, and those rates may be tied to the prime rate, but the connection is usually weak. Call your bank to ask whether your checking account earns interest and whether that rate moves with the prime rate.

Can I do anything to protect myself from prime rate increases?

If you carry a credit card balance, you can pay it down before the next rate increase to reduce the interest you owe. If you have an adjustable-rate mortgage or home equity line of credit, you can refinance into a fixed-rate product before rates rise further. For savings, you can move your money to a bank offering a higher margin above prime, though you will need to shop around regularly as rates change.

How often does the prime rate change?

The prime rate changes only when the Federal Reserve changes the federal funds rate, which happens at most eight times per year during scheduled Fed meetings. The prime rate can also change between meetings if the Fed calls an emergency meeting, but this is rare. Most years see between two and six prime rate changes.

Is the prime rate the same at every bank?

Yes, the prime rate itself is the same everywhere—it is published daily and all banks use the same number. What differs is the margin each bank adds on top of prime. One bank might offer a savings account at prime minus 2 percent while another offers prime minus 0.5 percent. The margin is where banks compete and where you can find better or worse deals.

What is the difference between the prime rate and the discount rate?

The discount rate is the interest rate the Federal Reserve charges banks when they borrow directly from the Fed's "discount window." The prime rate is what banks charge each other and their customers. The discount rate is usually higher than the federal funds rate and is used less often. Most rate changes you hear about refer to the federal funds rate and the prime rate, not the discount rate.