Home Mortgage Deduction Use this calculator to assess the potential benefits of a home mortgage deduction. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Share | Related Content Social Security Taxes Estimate how much of your Social Security benefit may be considered taxable. How Income Taxes Work A quick look at how federal income taxes work. Federal Income Tax Use this calculator to estimate your income tax liability along with average and marginal tax rates.