What you provide
What you provide
- Current debt balance: Principal before the next interest charge.
- Annual interest rate: Fixed annual rate used by the simulation.
- Fixed monthly payment: Amount paid every month until payoff.
DEBT / FIXED PAYMENT
Debt Payoff Time Calculator
Simulate a fixed monthly debt payment to estimate payoff duration, total interest, and total repayment while detecting payments that never reduce principal.
- 01 Calculated in this tab
- 02 Values stay in this browser tab
- 03 Use boundary
Use boundary
Calculation path
The model adds monthly interest and subtracts the entered fixed payment until the balance reaches zero, rejecting a payment that cannot cover interest.
Calculation path
The schedule adds monthly interest and subtracts the fixed payment until the balance reaches zero.
What you receive
What you receive
- Estimated payoff time
- Estimated total interest and repayment
- Fixed payment used in every cycle
Use boundary
Choose the maximum decimal places shown. This does not increase source accuracy.
Fees, rate changes, skipped payments, new borrowing, daily accrual, and lender rounding can change the actual schedule.
This is an educational planning estimate. Confirm lender, issuer, tax, accounting, and contractual rules with the relevant provider or qualified adviser before acting.