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 is not a single fixed number. It changes roughly six to eight times per year when the Federal Reserve's policy committee meets and votes on whether to raise, lower, or hold steady the federal funds rate — the rate at which banks lend reserve balances to each other overnight. Within hours of a Fed announcement, major U.S. banks adjust their prime rate in lockstep, usually by the same amount the Fed moved.
The prime rate itself is always about 3 percentage points higher than the federal funds rate. If the Fed sets its target range at 5.25% to 5.50%, the prime rate becomes 8.25%. This spread exists because banks need to cover their own costs and profit margin when they lend to customers.
You do not borrow at the prime rate unless you have excellent credit and a strong banking relationship. Credit cards, home equity lines of credit, and adjustable-rate mortgages are priced as "prime plus" — meaning the prime rate plus an additional percentage that depends on your credit score and the type of loan. A bank might offer you prime plus 8% on a credit card, or prime plus 0.5% on a home equity line if you have a 750+ credit score.
Key Takeaways
- The prime rate changes when the Federal Reserve changes its policy rate, usually several times per year.
- Your actual interest rate on a credit card or adjustable loan is the prime rate plus a margin that depends on your credit and the lender's terms.
- Fixed-rate loans (like most mortgages) are not directly tied to the prime rate, but adjustable-rate products are.
- The prime rate affects how much your monthly payment will change if you have a variable-rate loan or credit line.
How the Federal Reserve controls the prime rate
The Federal Reserve does not set the prime rate directly. Instead, it sets a target range for the federal funds rate — the overnight lending rate between banks. The prime rate follows automatically because banks use it as their anchor point for all other lending decisions.
The Fed raises rates when inflation is running too high and the economy is growing too fast. It lowers rates when unemployment is rising or growth is slowing. These decisions happen at scheduled meetings eight times per year, though the Fed can act between meetings if conditions change sharply.
Within hours of a Fed announcement, the Wall Street Journal publishes the new prime rate, and all major banks update their published prime rates to match. This is why your credit card rate or home equity line can jump overnight — the lender's cost of funds has changed, and they pass that change to you if you have a variable-rate product.
Which loans are tied to the prime rate and which are not
Variable-rate products move with the prime rate. These include most credit cards, home equity lines of credit (HELOCs), adjustable-rate mortgages (ARMs), and some personal loans. When the prime rate rises, your minimum payment or interest charge on these products rises too, usually within one or two billing cycles.
Fixed-rate products do not move with the prime rate after you lock in your rate. A 30-year fixed mortgage, a personal loan with a fixed rate, or a student loan with a fixed rate will not change even if the prime rate moves 10 times over. However, when you first take out a fixed-rate loan, the lender prices it based on where the prime rate is at that moment, plus their margin.
Some loans have a hybrid structure: an ARM might be fixed for the first five or seven years, then adjust annually based on the prime rate plus a margin. When the fixed period ends, your payment can jump significantly if the prime rate has risen.
Why the prime rate matters for your borrowing costs
If you carry a credit card balance, every time the prime rate rises, your interest charges rise too. A card charging prime plus 18% will cost you more each month when the prime rate moves from 7% to 7.5%. Over a year, that 0.5% increase can add hundreds of dollars to what you owe on a large balance.
If you have a HELOC and use it to pay for home repairs or other expenses, a rising prime rate means your monthly payment grows. This can strain a budget that was built around a lower payment. Conversely, if the prime rate falls, your payment shrinks — but this is rare and usually temporary.
For borrowers shopping for a new loan, a rising prime rate means lenders will charge higher rates on new variable-rate products. If you are considering an ARM instead of a fixed-rate mortgage, you are betting that rates will fall or stay low. If they rise instead, your payment will rise too.
How to find the current prime rate
The Wall Street Journal publishes the prime rate daily in its Money & Investing section and online. The Federal Reserve's website shows the current federal funds target range and the dates of upcoming policy meetings. Your bank or credit card issuer will show your current rate on your statement or online account, listed as either a fixed rate or as "prime plus" a specific margin.
If you have a variable-rate product, your lender is required to disclose how your rate is calculated — usually in the terms and conditions you received when you opened the account. Look for language like "the prime rate as published in the Wall Street Journal plus 8%" or "the federal funds rate plus 3%." This tells you exactly how much your rate will move when the Fed acts.
What happens when the prime rate changes
When the Fed raises the prime rate, variable-rate borrowers pay more. Credit card interest charges increase, HELOC payments rise, and ARM payments jump (if the fixed period has ended). Banks benefit because they earn more on the loans they hold. Savers benefit too — savings accounts, money market accounts, and CDs earn higher rates.
When the Fed lowers the prime rate, the opposite happens. Variable-rate borrowers pay less, but savers earn less on deposits. This is why the Fed faces pressure from different groups: borrowers want lower rates, savers want higher rates, and the Fed tries to balance the needs of the whole economy.
The lag between a Fed announcement and a change in your actual payment depends on your lender and product type. Credit card rates usually change within one or two billing cycles. ARM adjustments happen on the anniversary date specified in your mortgage. HELOCs may adjust monthly or quarterly depending on the terms.
Frequently Asked Questions
Is the prime rate the same at every bank?
Yes, the published prime rate is the same across all major U.S. banks because they all use the same Federal Reserve policy rate as their anchor. However, the margin each bank adds on top of prime varies. One bank might charge prime plus 8% on a credit card while another charges prime plus 10%, depending on your credit score and their pricing strategy.
Can I lock in a rate before the prime rate changes?
For fixed-rate products like mortgages or personal loans, yes — once you lock in a rate, it does not change even if the prime rate moves. For variable-rate products like credit cards or HELOCs, no. Your rate is tied to the prime rate for the life of the account unless you pay off the balance and close the account.
What is the difference between the prime rate and the federal funds rate?
The federal funds rate is the overnight lending rate between banks, set by the Federal Reserve. The prime rate is always about 3 percentage points higher and is what banks charge their best customers. Your actual rate is usually prime plus an additional margin based on your credit and the loan type.
Does the prime rate affect my savings account interest?
Yes, indirectly. Banks raise savings account rates when the prime rate rises because they can earn more on loans. However, banks do not always raise deposit rates as quickly as they raise loan rates, so the benefit to savers is often delayed or smaller than the cost to borrowers.
How often does the prime rate change?
The Federal Reserve meets eight times per year on a scheduled calendar. The prime rate changes only when the Fed changes its policy rate, which may happen at some or all of these meetings. In some years the rate moves six or more times; in other years it may stay flat for months.