Credit Card Payoff Calculator — How Long to Pay Off Your Card
Most people who carry a balance lose track of the two numbers that actually matter: how many months this will take, and how much interest it will pay. This calculator runs both, and it compares three payment levels so you can see what your extra money is worth.
Change the sliders to your real numbers. The third scenario is the one that matters — it is your minimum plus whatever extra you can actually spare.
Why minimum payments take so long
Your minimum payment is usually around 1% of your balance plus the interest that accrued last month. At a 25% APR, interest alone eats about 2.1% of the balance every month. So a 1% minimum payment is, in effect, paying interest — not principal — and the balance barely moves.
That is why a $5,000 balance at 25% can take a decade or more at minimum payments, with total interest roughly equal to the balance itself. The longer the clock runs, the more the interest compounds on top of the original debt.
What the extra payment actually does
Every dollar above the minimum goes straight to principal, and every dollar of principal removed stops earning interest from the next month on. That is why the payoff curve bends: $100/mo extra on a $5,000 balance at 25% typically cuts the timeline by years and saves thousands in interest.
The calculator's third scenario shows your real trade. Compare its total interest against the minimum-only row — that gap is the value of the extra payment.
When paying more does not help
If your payment is below the monthly interest charge, the balance grows no matter what — the calculator flags this case directly. In that situation the problem is not strategy, it is cash flow: the payment has to come above the interest line first (balance x APR / 12).
If the balance is large relative to your income, a lower-APR option (see the personal loan vs credit card tool) may beat simply paying more, because it removes the rate instead of just the balance.
Assumptions
- Fixed APR for the whole period (no promotional or variable rate modeling).
- No new purchases, cash advances, or fees during the period.
- Payment applied at month end; interest accrues monthly as balance x APR / 12.
- See the full formulas on the methodology page.
Frequently asked questions
How is my minimum payment calculated?
Issuers use their own formula, typically the greater of a fixed floor (often $25-$35) or a percentage of the balance (often ~1%) plus accrued interest and fees. Check your statement for your exact number — this tool takes it as an input.
What happens if I only pay the minimum?
You stay in good standing and avoid late fees, but at a typical 20-30% APR the balance shrinks very slowly or not at all. Interest can exceed the original balance over time.
Does paying more than the minimum help my credit score?
Directly, no — it is not a scoring factor. Indirectly, yes: a lower balance means lower credit utilization, which is a major scoring factor, and a paid-off card removes a revolving obligation.
Should I pay one card or split extra across cards?
For the smallest total interest, direct all extra to the highest-APR card (avalanche). For motivation, some people clear the smallest balance first (snowball). The difference is in the avalanche-vs-snowball tool.
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