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Extra Principal Mortgage Acceleration & Interest Savings

Calculate how paying an extra monthly principal or annual lump sum shortens your mortgage loan by years and saves thousands in total interest.

Inputs used by this tool

Enter values in the interactive controls when the page loads. The result depends on the assumptions and units shown for each field.

Input type: number
Input type: number
Input type: number
Input type: number

Data handling varies by tool. Review its notes and the Privacy Policy before entering sensitive information.