CAUTION: Do NOT rely on the results from this calculator to make financial decisions. Interest rates vary and the tax laws change regularly. Please contact us for assistance with your specific concerns.

This calculator allows you to compare what would happen if you took one of two choices with some extra cash you have — prepaying your mortgage each month, or investing it instead. This calculation uses the total income tax rate you enter and assumes you always itemize (even late into your mortgage when your interest will be lower).

Current monthly payment (principal & interest only)
Extra monthly payment
Current annual loan interest rate (%)
Current loan balance
Loan interest deductibility	Yes No
Expected long-term investment return (%)	1.0% 1.5% 2.0% 2.5% 3.0% 3.5% 4.0% 4.5% 5.0% 5.5% 6.0% 6.5% 7.0% 7.5% 8.0% 8.5% 9.0% 9.5% 10.0% 10.5% 11.0% 11.5% 12.0% 12.5% 13.0% 13.5% 14.0% 14.5% 15.0%
Expected long-term tax rate (%) (Federal & State)
Investment type	After-Tax Tax Deferred