Credit Card Interest & Payoff Calculator

Your card issuer divides your APR by 365 to get a Daily Periodic Rate (DPR). Each day, that rate is multiplied by your current balance to compute the daily interest charge. At the end of each billing cycle, all daily charges are summed and added to your statement. For a card with a 22.99% APR, the DPR is about 0.063%, meaning a $5,000 balance accrues roughly $3.15 in interest every single day.

The fastest mathematical path is the avalanche method — directing all extra payments to the card with the highest APR while making minimums on others. Combining this with a 0% balance transfer on your most expensive debt, plus a fixed monthly budget above minimums, will minimize both time and total cost. Our calculator above lets you model different payment amounts to find the sweet spot for your budget.

Yes — dramatically. On a $5,000 balance at 22.99% APR, paying $200/month instead of the ~$100 minimum cuts your payoff time from 9+ years to about 2.5 years and saves over $4,000 in interest. Every dollar above the minimum goes directly to reducing principal, which in turn reduces future interest charges.

Minimum payments are designed to keep your account current, not to pay off debt efficiently. Most of your minimum payment goes toward interest, with only a small fraction reducing the principal. A $5,000 balance at typical APR could take 15–25 years to pay off with minimums alone, and you would pay more in interest than the original balance.

A balance transfer moves your debt to a card with a 0% introductory APR (typically 12–21 months). During the promo period, 100% of your payment reduces principal. Even after paying a 3–5% transfer fee, most people save significantly versus continuing to pay 20%+ interest. The key is creating a payoff plan that clears the balance before the promo rate expires.

No — this is a persistent myth. You do not need to carry a balance or pay interest to build credit. Simply using your card for regular purchases and paying the statement balance in full each month builds a positive payment history (35% of your score) while keeping utilization low (30% of your score). Carrying a balance only costs you money.

Generally, no. Closing a card reduces your total available credit, which increases your utilization ratio and can lower your score. It also shortens your average account age over time. The exception is cards with high annual fees that you no longer use — but even then, consider downgrading to a no-fee version from the same issuer to preserve the credit line and account history.

As of 2026, the average credit card APR is approximately 21–24% for new accounts, though rates vary widely based on creditworthiness. Secured cards and cards for excellent credit may offer rates as low as 13–17%, while store cards and subprime cards can reach 28–30%. If your rate is significantly above average, calling your issuer to negotiate or applying for a balance transfer card can be worthwhile.

For credit cards, APR and interest rate are effectively the same thing — unlike mortgages, credit card APR does not include additional fees. However, your APR only applies if you carry a balance past your grace period (typically 21–25 days after the statement close). Pay your full statement balance within the grace period, and you pay zero interest regardless of your APR.

Yes, and it is more common than most people think. Call the number on the back of your card and ask for a rate reduction, especially if you have been a long-time customer with a good payment history. Studies show that about 70% of people who ask receive some form of rate reduction. Even a few percentage points lower can save hundreds of dollars on a carried balance.