Use this to compare the real after-tax interest rate of your mortgage. Then compare your after-tax yields on taxed investments and tax protected (i.e. tax-deferred 401(k),403(b),IRA accounts or tax free Roth or Education IRA accounts). See where is the best place to put your money!

Effective After-Tax Loan Interest Rate: %
Effective After-Tax Investment Yield Rate: %
Effective Tax-Protected Investment Yield Rate: %