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 | Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Contents Comparing Investments This calculator compares the net gain of a taxable investment versus a tax-favored one. How to Make the Tax Code Work for You When you take the time to learn more about how it works, you may be able to put the tax code to work for you. Tax Freedom Day Assess how many days you'll work to pay your federal tax liability.