The prime rate and your credit card APR.

Where to find the official numbers

The federal funds rate target is announced at the conclusion of each FOMC meeting (eight times a year, typically). Statements are published on the Federal Reserve’s FOMC calendar. The Summary of Economic Projections (the dot plot), published quarterly, provides FOMC members’ views on the appropriate future path of rates.

The prime rate is published by major banks and aggregated in the Federal Reserve H.15 statistical release. The Wall Street Journal’s reported prime rate is the most commonly referenced figure on cardholder agreements; it is set by polling the largest banks and using the rate that at least 23 of the top 30 banks have adopted.

The Federal Reserve’s G.19 consumer credit release tracks the average APR on accounts assessed interest at commercial banks, which is the most commonly cited figure when discussions reference the “average credit card APR.”

The recent historical record

A condensed timeline of recent prime rate history to illustrate the cycle:

• December 2008 to December 2015: federal funds target at 0% to 0.25%, prime at 3.25%. Credit card APRs at modern-era lows.
• 2015 to 2018: gradual tightening cycle, prime rising from 3.25% to 5.5% by late 2018.
• 2019 to early 2020: three modest cuts in 2019, then emergency cuts in March 2020 returning prime to 3.25%.
• March 2022 to mid-2023: the most aggressive tightening cycle in decades, with the federal funds rate moving from near zero to above 5%. Prime followed from 3.25% to 8.5%.
• Late 2024 to 2025: modest easing, with the federal funds rate trimmed in steps as inflation moderated.

The G.19 release shows credit card APRs on accounts assessed interest moving in approximate sync with prime, with a lag of one to two quarters as variable APR cards re-set across the population. The lag matters less for an individual cardholder (your specific card moves within one to two cycles) but shows up in the aggregate data.

Why the prime rate plus 3 convention exists

The convention that prime equals fed funds target plus 3 percentage points is not regulated; it is custom, dating to the 1990s. The 3-point spread roughly reflects the gap between the rate banks can borrow at (federal funds) and the rate they charge their most creditworthy customers (prime), covering operational costs and a modest spread for the bank.

In practice, the convention is highly stable. Through repeated tightening and easing cycles since the 1990s, the spread between prime and federal funds has stayed within a few basis points of 3 percentage points. The major banks essentially move prime together within hours of any Fed announcement.

For credit card pricing this stability matters because it means the Fed’s policy signals translate cleanly into consumer borrowing costs. There is no multi-month delay or distortion in the transmission. What the Fed does today shows up on credit card statements within a month or two.

Practical implications for cardholders

Three actionable points emerge from the prime rate story:

1. Card APRs are not stable. The rate you signed up for can change materially in a tightening cycle. A card opened in 2021 at 14% APR was a 19% card by 2023, simply through prime rate movements.
2. 0% intro APRs are immune. The intro rate is fixed for the intro window regardless of what happens to prime. This is a meaningful hedge during expected tightening cycles.
3. Credit union 18% ceilings hold even in high-rate environments. When prime spiked to 8.5% in 2023, major bank card APRs followed (some upper-range cards approaching 30%). Federal credit union cards remained capped at 18% per NCUA rules. The protection is most valuable precisely when you need it most. See our credit union vs major bank pricing guide for the deeper context.

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