Credit Card Payoff Calculator
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What Your Result Means
- Months to payoff: The number of months until the balance reaches zero at your fixed payment. Minimum payments can stretch payoff to 15–30 years on a typical balance.
- Total interest: The cumulative interest you will pay over the entire payoff period. On high-APR cards this can rival or exceed the original balance.
- Total paid: Your original balance plus all interest. Comparing this to the starting balance shows the true cost of carrying the debt.
- "Never" result: If your payment does not exceed the first month's interest charge, the balance grows indefinitely. Increase your monthly payment above that threshold to begin making progress.
How This Calculator Works
You enter your current balance, the card's annual percentage rate (APR), and a fixed monthly payment. The tool divides the APR by 12 to get a monthly rate, then simulates each month: it adds interest to the remaining balance and subtracts your payment. It repeats until the balance reaches zero or 600 months, whichever comes first. The calculation assumes no new charges, no fees, and a constant APR — real payoff may differ if any of those change.
Quick Questions
Why does the total interest seem so high?
Credit card APRs typically range from 18–28%. Because interest compounds monthly on the remaining balance, even modest balances can generate substantial interest over years of minimum payments. Paying more than the minimum each month is the single most effective way to reduce total interest.
What if I keep using the card while paying it off?
This calculator assumes no new charges. Any additional spending adds to the balance and extends the payoff timeline. For an accurate estimate, either stop using the card or add your expected monthly charges to the balance.
Should I pay off my highest-rate card first?
The "avalanche" method — paying minimums on all cards and putting extra toward the highest-rate card — saves the most interest. The "snowball" method targets the smallest balance first for psychological momentum. Both work; pick the one you will stick with.
Does a balance transfer help?
A 0% balance transfer card can eliminate interest temporarily (usually 12–21 months), letting every dollar go toward principal. Watch for transfer fees (typically 3–5%) and make sure you can pay off the balance before the promotional rate expires, or you may owe back-interest.
Is this the same formula credit card companies use?
Card issuers use a similar daily periodic rate calculation, but they also factor in fees, penalty APRs, and grace periods. This calculator uses monthly compounding with a fixed APR, which gives a close approximation for planning purposes.
Sources
- Consumer Financial Protection Bureau — Credit Cards (APR disclosures, cardholder rights)
- Federal Reserve G.19 — Consumer Credit (average credit card interest rates)
- IRS Topic 505 — Interest Expense (deductibility rules for personal interest)
Method & review
Estimate only. Results reflect your inputs and standard formulas — they are not financial, tax, legal, health, or investment advice. Verify important decisions with a qualified professional.