The prime rate is the interest rate that banks charge their most creditworthy customers, and it moves whenever the Federal Reserve changes its benchmark rate

The prime lending rate (also called the prime rate or prime) is the baseline interest rate that large banks use when they lend to their best customers—typically large corporations and wealthy individuals with excellent credit. When you hear that "the Fed raised rates," the prime rate usually moves in the same direction within a day or two.

The prime rate itself is not set by any government agency. Instead, it follows the federal funds rate, which is the interest rate the Federal Reserve targets for banks to charge each other overnight. When the Fed's policy committee meets and votes to raise or lower the federal funds rate, banks respond by raising or lowering the prime rate by the same amount. This happens automatically—there is no separate decision banks make about the prime.

You encounter the prime rate indirectly when you borrow. Credit card companies, mortgage lenders, and auto lenders all tie their rates to the prime rate, then add a margin on top. If the prime rate is 5.50% and a credit card company adds a 15% margin, your card's rate becomes 20.50%. When the prime moves, your rate moves with it (though credit card issuers can change their margins independently).

Key Takeaways

  • The prime rate moves automatically when the Federal Reserve changes the federal funds rate, usually within one business day.
  • Your personal loan, credit card, or mortgage rate is built on top of the prime rate plus the lender's margin, so prime rate changes affect what you pay.
  • The prime rate is published daily in the Wall Street Journal and by major banks; it is not a secret number you have to hunt for.
  • The prime rate affects variable-rate loans immediately but does not change fixed-rate loans you already have locked in.

How the prime rate connects to what you actually pay

When you take out a loan or open a credit card, the lender quotes you a rate. That rate has two parts: the prime rate plus the lender's own markup (called the spread or margin). For example, a bank might offer you a home equity line of credit at "prime plus 1%." If prime is 5.50%, your rate is 6.50%.

The lender's margin stays the same for the life of the loan, but the prime part moves. So when the Federal Reserve raises the federal funds rate and the prime rate climbs to 5.75%, your rate automatically becomes 6.75%. You do not have to do anything—the change happens on the lender's side. This is why variable-rate loans cost more when interest rates are rising: you are exposed to the prime rate's movements.

Fixed-rate loans work differently. If you locked in a mortgage at 6.5% when you signed the papers, that rate does not change even if the prime rate moves. You are protected from rate increases, but you also do not benefit if rates fall. The tradeoff is built into the rate you agreed to at the start.

Where to find the current prime rate

The prime rate is published every business day. The Wall Street Journal publishes it in its "Money Rates" table, and you can also find it on the Federal Reserve's website or through major financial news outlets like CNBC, Bloomberg, or Yahoo Finance. Many banks also display the current prime rate on their websites.

Because the prime rate moves in lockstep with the federal funds rate, you can also track it by watching the Fed's announcements. The Federal Reserve's policy committee meets eight times a year and announces any changes to the federal funds rate target. Within hours, banks adjust the prime rate to match.

If you have a variable-rate loan or credit card, your lender's website or monthly statement will show you the rate you are paying right now. You do not need to calculate it yourself—the lender does that and applies it automatically.

Why the Federal Reserve controls the prime rate indirectly

The Federal Reserve does not set the prime rate directly. Instead, it sets a target range for the federal funds rate—the rate banks charge each other for overnight loans. Banks respond by adjusting the prime rate to stay in line with that target.

The Fed raises the federal funds rate when it wants to slow inflation or cool down an overheating economy. Higher rates make borrowing more expensive, so people and businesses borrow less, spend less, and prices stabilize. The Fed lowers rates when the economy is weak and needs a boost—cheaper borrowing encourages spending and investment.

Because the prime rate follows the federal funds rate, it rises and falls for the same reasons. You are not paying more because your bank decided to charge you more; you are paying more because the Fed is trying to manage inflation or unemployment across the entire economy.

How prime rate changes affect different types of borrowing

Credit cards are the most sensitive to prime rate changes. Most credit cards have variable rates tied directly to the prime rate. When the prime moves, your card's rate changes within one or two billing cycles. If you carry a balance, you will pay more interest immediately.

Home equity lines of credit (HELOCs) also move with the prime rate. These are variable-rate products by design, so rate increases hit your monthly payment. Some HELOCs have a cap—a maximum rate you can be charged—but many do not.

Mortgages and auto loans are usually fixed-rate, so the prime rate does not affect them once you close the loan. However, if you are shopping for a mortgage or auto loan, the prime rate influences what rates lenders are offering. When prime is high, lenders quote higher rates to new borrowers.

Savings accounts and money market accounts sometimes move with the prime rate too, though the connection is looser. Banks raise savings rates when they are competing for deposits, which often happens when the prime rate is high and they can charge more on loans. But banks do not have to match prime-rate increases on savings accounts the way they do on variable-rate loans.

What happens when the prime rate stays flat

The Federal Reserve does not change the federal funds rate at every meeting. Sometimes the policy committee votes to hold rates steady. When that happens, the prime rate does not move, and your variable-rate loan or credit card rate stays the same.

Periods of flat rates can last months or even years. From 2015 to 2018, the Fed raised rates gradually but not at every meeting. From 2020 to 2021, the Fed held rates at zero while the economy recovered from the pandemic. During those flat periods, variable-rate borrowers get a break—their rates do not climb.

The Fed's next move is not predictable from the prime rate itself. You have to watch Fed announcements and economic data to understand whether rates are likely to rise, fall, or hold steady. Financial news outlets cover Fed meetings closely and publish analysis of what economists expect.

Frequently Asked Questions

Does the prime rate affect my fixed-rate mortgage?

No. A fixed-rate mortgage locks in your interest rate for the entire loan term. The prime rate does not change what you pay. However, if you refinance your mortgage, you will get a new rate based on what the prime rate and market conditions are at that time.

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 when the Fed's policy committee meets. It can also change between meetings if the Fed calls an emergency meeting, though that is rare. Most months, the prime rate does not move.

Can my bank charge me a different rate than prime plus their margin?

Yes. The prime rate is a benchmark, but lenders can price loans however they want. Your actual rate depends on your credit score, the loan type, the loan term, and how much you are borrowing. The prime rate is just the floor that most variable-rate products are built on top of.

If the prime rate goes down, does my credit card rate go down automatically?

Yes, usually within one or two billing cycles. Credit card issuers are required to lower your rate when the prime rate falls. However, they can raise your rate faster than the prime rate rises if they change their margin, so the relationship is not always perfectly symmetrical.

Where can I see what the prime rate was in the past?

The Federal Reserve publishes historical federal funds rates on its website, and financial data sites like FRED (Federal Reserve Economic Data) maintain records of the prime rate going back decades. You can see when rates rose and fell and understand how your variable-rate loans were affected during different economic periods.