Economics

Prime Rate

Interest rate banks charge most creditworthy customers. Usually Fed funds rate + 3%. Credit cards and HELOCs tied to prime rate.

Also known as: prime lending rate, prime interest rate

What You Need to Know

Prime rate is the interest rate commercial banks charge their most creditworthy corporate customers. Typically set at Federal Funds Rate + 3%. Most consumer loans are priced relative to prime rate.

Current relationship (2024):

  • Fed funds rate: 5.25-5.50%
  • Prime rate: 8.50% (Fed funds + 3%)

Common uses:

  • Credit cards: Prime + 13-20% = 21-28% APR
  • HELOCs: Prime + 0-2% = 8.5-10.5%
  • Business loans: Prime + 2-5%
  • Variable-rate mortgages: Prime + margin

When Fed raises rates by 0.25%, prime rate increases 0.25%, and your variable-rate debts increase proportionally. HELOC at Prime + 1% goes from 8.5% to 8.75%.

Wall Street Journal publishes the most-used prime rate, based on rates from 70% of largest US banks. When 70%+ change their prime rate, WSJ updates the published rate.

Doesn't apply to: Fixed-rate mortgages, fixed student loans, savings accounts (though savings rates loosely follow prime).

Sources & References

This information is sourced from authoritative government and academic institutions: