Who sets the prime rate? Each commercial bank sets its own, but in practice nearly every major U.S. bank follows the same convention: the prime rate equals the upper end of the Federal Reserve’s federal funds target range plus 3 percentage points. As of early 2026, that puts the prime rate at 6.75%, on top of a federal funds target range of 3.50% to 3.75%.1Federal Reserve Board. H.15 – Selected Interest Rates (Daily) So the Fed does not set the prime rate, and no single bank sets it for the country. The Fed moves the floor; the banks move in lockstep above it.
What the Federal Reserve Actually Controls
The Federal Open Market Committee, the Fed’s policy-setting body, meets eight times a year to decide on a target range for the federal funds rate.2Federal Reserve Board. FOMC Meeting Calendars and Information That rate is what banks charge each other for overnight loans of reserve balances. By raising or lowering the target, the committee influences borrowing costs across the economy without ever telling a bank what to charge a customer.
Raising the target makes borrowing more expensive and tends to cool spending. Lowering it does the opposite. In January 2026 the committee held the target range at 3.50% to 3.75%.3Federal Reserve Board. The Fed Explained – Accessible Version That decision is the input; the prime rate is what banks build on top of it.
Why Banks Move Together
Each bank is a private institution setting its own lending rates. No law fixes the prime rate at a particular level. A bank could, in theory, price loans however it wanted based on its cost of funds, competition, and liquidity needs. In practice, since the early 1990s, the largest U.S. banks have kept the prime rate exactly 3 percentage points above the upper end of the federal funds target range. With that upper target at 3.75%, the formula produces 6.75%.1Federal Reserve Board. H.15 – Selected Interest Rates (Daily)
The convention is so consistent that many people assume the Fed publishes the prime rate itself. It does not. The Fed sets the cost of overnight borrowing between banks, and banks layer their standard 3-point markup on top. Because every major bank follows the same spread, a change in the federal funds target flows through to the prime rate within a day or two, and it looks automatic even though each bank is technically making its own decision.
The prime rate is not the only benchmark banks use. Some adjustable-rate mortgages are tied to a Cost of Funds Index instead. But for credit cards, home equity lines of credit, and most short-term business loans, the prime rate is the dominant index.
The Number Loan Contracts Actually Point To
Because each bank technically sets its own prime, the industry needs a single reference figure for loan contracts. The Wall Street Journal fills that role, publishing a prime rate that reflects the base rate on corporate loans posted by the largest U.S. banks; it changes when enough of those banks move in the same direction.4The Wall Street Journal. Money Rates The Federal Reserve publishes its own “bank prime loan” rate on its H.15 statistical release, defined as the rate posted by a majority of the 25 largest U.S.-chartered commercial banks by domestic assets.1Federal Reserve Board. H.15 – Selected Interest Rates (Daily)
Variable-rate loan agreements often cite “the Prime Rate as published in The Wall Street Journal” as their index. That independently published number prevents disputes over what the rate is on any given day, and it means no single bank can move the national benchmark on its own. The published rate shifts only when a critical mass of major banks agree.
How the Prime Rate Reaches Your Loan
Most consumers never borrow at the prime rate itself. It is the starting point. Lenders add a margin based on the borrower’s credit, and the sum is the rate you actually pay. The prime rate with no margin is generally reserved for large corporations with the strongest financial profiles.
- Credit cards. Most variable-rate cards are priced as the prime rate plus a fixed margin. The average margin across all credit tiers reached 16.4% in 2024, which with a 6.75% prime rate puts a typical cardholder above 23% APR. Borrowers with strong credit get smaller margins; higher-risk borrowers get larger ones.5Consumer Financial Protection Bureau. The Consumer Credit Card Market Report to Congress
- HELOCs. Nearly all home equity lines are indexed to the prime rate, and adjustments typically hit within one to two billing cycles after a change.
- Auto and personal loans. Many variable-rate products from banks and credit unions are also indexed to prime.
- SBA 7(a) loans. Federal regulations specify that the base rate for variable-rate 7(a) loans is the prime rate as printed in a national financial newspaper, with rate adjustments no more often than monthly. The SBA caps the spread by loan size: loans of $50,000 or less can carry up to prime plus 6.5%, while loans above $350,000 are capped at prime plus 3%. At today’s 6.75% prime, that means a maximum of 9.75% on the larger loans and up to 13.25% on the smallest.6eCFR. 13 CFR 120.214 – What Conditions Apply for Variable Interest Rates7U.S. Small Business Administration. Types of 7(a) Loans
Credit scores drive the margin. Scores above 800 are classified as “excellent,” and scores between 740 and 799 are “very good.”8MyCreditUnion.gov. Credit Scores Borrowers at the top of those ranges receive the smallest margins above prime; borrowers with fair or poor credit see margins many times larger.
When the Prime Rate Changes, What You’ll See
You might expect your card issuer to warn you before raising your rate. Federal law does require 45 days’ advance written notice for most rate increases. There is an important exception: when your rate goes up solely because the prime rate increased under the terms of your existing agreement, no advance notice is required.9eCFR. 12 CFR 1026.9 – Subsequent Disclosure Requirements You already agreed to a rate that moves with a public index outside the issuer’s control, so the change is treated as automatic rather than discretionary.
For credit cards, the new rate usually appears on the next billing statement after the prime rate moves. For HELOCs, expect the adjustment within one to two billing cycles. The new prime rate is public on the day it changes, published in major financial outlets and on the Fed’s H.15 release.
Lenders still have to tell you upfront how a variable rate works. Card issuers must disclose that the rate may vary and identify the index. Home equity lenders must explain the circumstances under which the rate can increase and any caps. When the FOMC holds steady, as it did in January 2026, the prime rate stays where it is and variable-rate borrowers see no change in their index.10Federal Reserve Board. FOMC Minutes January 2026 When it moves, every loan tied to prime moves with it, on the same day, by the same amount.