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How credit card interest really works

Why balances shrink so slowly.

5 min read

Credit card interest is usually charged daily on your balance, and added monthly. When rates are high, a big share of each payment goes to interest instead of the balance.

The basics

  • APR is the yearly rate; the daily rate is roughly APR divided by 365
  • Pay the full statement balance by the due date and you usually pay no interest on purchases
  • Carry a balance and interest is charged on it, often including new purchases
  • Cash advances often have higher rates, fees and no grace period

Example

A $3,000 balance at 24% APR builds up about $60 of interest in a month. A $90 payment only reduces the balance by about $30.

General educational information, not financial or legal advice. Nickel Keepers isn't paid by any lender, card company or debt relief company.