See months to payoff with extra and review months saved and estimated interest saved using values you enter.
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Mortgage Overpayment Calculator for United States
USD · 12,345.67US customary measurementsRoad distance: miles
United States planning scenario. Amounts, prices and rates are editable examples. No verified local tax bands, exemptions, benefits or lender rules are applied. Currency amounts are not exchanged.
Switch countries to open a separate scenario. Your edits are kept while this calculator is open; use Save scenario to keep them on this device.
Your details
USD
Example only. Enter the amount or rate applicable to your situation in United States.
%
Example only. Enter the amount or rate applicable to your situation in United States.
Enter years. Monthly loans and savings require a whole number of months; 0.5 years is 6 months.
USD
Example only. Enter the amount or rate applicable to your situation in United States.
Months to payoff with extra
236
Amounts in USD · United States · editable planning estimate
Months saved64
Estimated interest saved$57,646.33
Regular monthly payment$1,610.75
Your calculation, beautifully packaged.Download a report with this result, your inputs, the formula, and assumptions.
How this result was calculated
Calculate the regular monthly payment. Each month add interest at annual rate / 12 and subtract the regular payment plus extra principal until the balance reaches zero. Compare payoff months and interest with the original schedule.
Country setup: United States. Displayed measurements are converted to the formula's base units internally.
Assumption: Uses the entered amounts and the units shown. Sample prices, rates and allowances are editable examples, not local quotes or verified tax rules. United States planning scenario. Amounts, prices and rates are editable examples. No verified local tax bands, exemptions, benefits or lender rules are applied. Currency amounts are not exchanged.
Calculation version 1.0.0 · Support state: generic
Calculate the regular monthly payment. Each month add interest at annual rate / 12 and subtract the regular payment plus extra principal until the balance reaches zero. Compare payoff months and interest with the original schedule.
This calculation uses the values you enter. It runs in your browser and does not request a location or account.
Worked example
With the sample inputs shown, months to payoff with extra is 236. Change the inputs to model your own case.
Questions people ask
How does the mortgage overpayment calculator work?
Calculate the regular monthly payment. Each month add interest at annual rate / 12 and subtract the regular payment plus extra principal until the balance reaches zero. Compare payoff months and interest with the original schedule.
Does this use live local rates or rules?
Uses the entered amounts and the units shown. Sample prices, rates and allowances are editable examples, not local quotes or verified tax rules.