CentiPlain
Free toolEducational

Debt Payoff Calculator

Estimate how many months it takes to clear a debt at your current payment, and how much total interest you'll pay along the way.

How much you currently owe.

Annual interest rate. Enter 0 for interest-free debt.

How much you pay each month (must exceed interest to make progress).

Currency

Enter your balance, APR and monthly payment to see the payoff plan.

How it works

Each month, interest accrues on the remaining balance and your payment is applied. The calculator simulates this month by month until the balance reaches zero. If your payment only covers the interest — or less — the balance never falls, and the calculator flags the goal as unreachable at that payment level.

The formula

payoff time = months until principal (payment − interest) reduces balance to zero

A concrete example

A $4,500 credit card balance at 22% APR with a $200 monthly payment is cleared in about 29 months and costs roughly $1,200 in interest. Increasing the payment to $300 cuts that to 18 months and around $750 in interest.

What this calculator does not tell you

  • APR and payments are held constant; in reality both can change.
  • Interest on credit cards is usually compounded daily; a monthly approximation is close but not exact.
  • This is a planning estimate, not a lending offer or guarantee.

Disclaimer

This calculator provides a general educational estimate based entirely on the values you enter. It is not financial, investment, tax or legal advice, and it is not personalized. Prices, rates and market conditions change. Check with a qualified professional before acting on any estimate. Full disclaimer and our methodology.

Frequently asked questions

If your payment only matches the monthly interest, your balance stays flat. You need to pay more than the interest each month to reduce the principal — this is also what "minimum payments barely make a dent" means in practice.

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