Credit Card Payoff Accelerator

See exactly how much interest you'll save by paying a little extra each month - and your exact payoff date vs. minimum-only payments.

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Enter your current or planned payment
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How much extra you'd add on top
USD - APR typical for US credit cards; results do not include fees
Current Payment With Extra Payment
Monthly Payment - -
Months to Pay Off - -
Payoff Date - -
Total Interest Paid - -
Total Paid - -
Interest Saved
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By paying extra
Months Saved
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Faster payoff
Disclaimer: These results are estimates for informational and educational purposes only. They do not constitute financial, investment, or tax advice. Payoff timelines may differ from your actual card terms. Full disclaimer ->
Downloads a PDF summary to your device

How to use this payoff estimate

This calculator shows how payment size affects payoff time and total interest. It is most useful when you enter the current balance, APR, and a payment amount you can repeat every month without adding new debt to the card.

Formula and assumptions

The calculator simulates monthly interest by applying the APR as a monthly rate to the remaining balance, then subtracting the monthly payment. It does not know your exact card agreement, fees, promotional APR rules, or daily balance calculation method, so the result should be treated as an estimate.

Example

A $5,000 balance at a high APR can take years to pay off if the payment barely exceeds the monthly interest. Increasing the payment reduces principal faster, and that lower principal reduces future interest charges too.

Common mistakes

  • Paying only the minimum without checking total interest.
  • Adding new purchases while trying to pay down the old balance.
  • Comparing consolidation offers without checking APR and fees.

How to interpret your result

The payoff date is only realistic if the payment is consistent and the balance does not keep growing. Total interest is the cost of time. A smaller payment may feel easier this month, but it can keep interest charges alive much longer.

What to test next

Try one payment that feels easy, one that feels realistic, and one stretch payment. If the stretch payment saves a large amount of interest but is not sustainable, choose the realistic amount and add occasional extra payments when cash is available.

Read the real cost of minimum payments and debt snowball vs avalanche before choosing a payoff strategy.

Frequently Asked Questions

How does the credit card interest calculation work?
Credit card interest compounds monthly based on your APR. Each month, interest is calculated on your remaining balance (APR / 12 x balance), added to what you owe, then your payment is subtracted. This calculator simulates that month-by-month to give you an accurate payoff timeline and total interest paid.
What is a minimum payment and why is it dangerous?
A minimum payment is the smallest amount your card requires each month - often 1-2% of your balance or a flat minimum like $25. The problem: at high APRs (20%+), most of your minimum payment covers interest, not principal. A $5,000 balance at 22% APR on minimum payments could take 15+ years to pay off and cost over $7,000 in interest.
How much extra should I pay each month?
Even an extra $25-50/month can save hundreds or thousands in interest. Try different amounts in this calculator. The sweet spot is usually as much as you can consistently afford - getting aggressive for a few months before burning out is less effective than steady extra payments.
Should I pay off credit cards before investing?
Generally yes - if your credit card APR is higher than your expected investment return (the stock market averages ~7-10% historically), paying off the card is mathematically better. A 22% APR card is a guaranteed 22% "return" when you pay it off, which beats most investments. Exception: always capture any employer 401(k) match first - that's an instant 50-100% return. Once you're debt-free, check our subscription tracker to stop the spending that refills the balance.