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Compare the true annual cost of multiple credit cards side by side. See exactly how APR, fees, and rewards affect what you pay or earn over 12 months.
Credit card APR (Annual Percentage Rate) determines how much interest accrues on an unpaid balance. When comparing two cards with the same starting balance and monthly payment, a lower APR results in less total interest and a faster payoff date. The average US credit card APR was approximately 21% in 2024 (source: Federal Reserve). Even a 3 to 5 percentage point difference in APR can save hundreds of dollars in interest over the payoff period on a balance of several thousand dollars. Enter the balance you plan to carry, the APR on each card, and your planned monthly payment to see total interest paid, total time to payoff, and the dollar difference between the two cards.
A typical scenario using default values
{
"balance": 5000,
"card_1_apr": 18,
"card_2_apr": 15,
"monthly_payment": 150
}