How to interpret this estimate

Compare a standard loan schedule with an added monthly payment. Applies the entered extra amount every month directly to principal.

When this result is useful

Use this calculator to compare how Loan principal, Annual interest rate, Original term, and Extra monthly payment change Original payoff time, Payoff time with extra payment, Time saved, and Estimated interest saved, and to review alternative values before using the estimate for planning.

Common limitations

Assumes a fixed interest rate and no prepayment penalty. Actual lender posting rules, payment dates, fees, and rounding can change results. Review the units and assumptions before interpreting the result.

This calculator uses the selected inputs and the fixed formula behind the tool to produce an estimate. Review the units, assumptions, and result labels before using the output for planning.

Finance results are educational planning estimates only. They may not include fees, taxes, inflation, rate changes, product terms, or every detail that can affect a real financial decision.

Read the financial disclaimer for more context.