FINANCIAL CALCULATOR

Debt Payoff Calculator

Estimate how long a balance takes to repay with a fixed monthly payment.

Enter your information

ESTIMATED RESULT—
FORMULA

How this calculator works

Months = −log(1 − balance × monthly rate ÷ payment) ÷ log(1 + monthly rate)

Use this calculator to explore a financial scenario and compare possible outcomes. Small changes to rates, terms, and contributions can materially change the result.

How to use it

  1. Current balance ($) — enter the value that applies to your situation.
  2. Annual interest rate (%) — enter the value that applies to your situation.
  3. Monthly payment ($) — enter the value that applies to your situation.
  4. Review the main result and the supporting figures.
  5. Change one value at a time to compare another scenario.

Keep in mind

This is an educational estimate, not financial, tax, lending, or investment advice. Actual rates, fees, payment schedules, and returns may differ.

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