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Credit Card Interest Calculator

Credit

Calculate the monthly interest charge on a credit card balance.

Changing the display currency only changes the symbol shown — amounts aren't converted, since this tool doesn't use live exchange rates.

Interest charged this month

$0

Daily rate:

How this is calculated

Monthly Interest = Balance × (APR ÷ 12). Daily periodic rate = APR ÷ 365, shown for reference since some issuers compound daily.

Frequently asked questions

Why is credit card interest so high compared to other loans?
Credit cards are unsecured, revolving debt with no collateral, which issuers price with higher rates than secured loans like mortgages or auto loans.