Paydown Mortgage or Invest Calculator

This form 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 tries to take into account your tax situation and assumes you always itemize (even late into your mortgage when your interest will be lower -- I am assuming you give to charities, and pay state and local taxes too!!)

Change these fields as desired:

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Results

PREPAYINGINVESTING
MonthLoan Bal (P)Int Paid (P)Tax Ded (P)Loan Bal (I)Int Paid (I)Tax Ded (I)Inv Bal (I)

Summary

-PrepayInvest
Total Interest ( 0.000 yrs) 0.00 0.00
Loan Payback Time (Years) 0.000 0.000
Investment - Loan Balance : $ 0.00 In your case it is wiser to prepay than to invest

Assumptions: This estimation assumes you will pay a fixed amount every month to either your loan prepayment or to some type of after-tax or tax deferred investment. If it is after-tax it will be more available to you, but every 12 months you will be forced to pay tax on your annual yield. This also assumes that you take the extra tax savings by NOT prepaying (prepaying lowers your deductible interest payments) and you put the tax savings into the investment as well. This also assumes that the top income tax rate will stay the same for a long time. This tax rate should also include your state income tax too if applicable.

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