MortgageMath.com - Prepayment Mortgage Reduction Calculator

By filling in the current values of your loan, this calculator allows you to see how prepaying your mortgage reduces the length of your mortgage. If you know your current principal balance and principal/interest payment, then enter in fields A1 and A2 . Otherwise, enter the three values for your loan in B1 , B2 and B3 (Original Loan Amount, Month of First Payment, and Length of Loan).

Change these fields as desired:
Choose the Option:

A1. Current Principal Balance (if known)
A2. Current Prin+Int Monthly Payment

B1. Original Principal Balance (otherwise)
B2. Month of First Payment (otherwise)	-
B3. Length of Mortgage (Years)

You fill out the following table for both cases:

Current Annual Interest Rate
Additional Monthly Pre-Payment*
Increase Monthly Payment each year by (%)

* = Enter B here to do a biweekly conversion from here.

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