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. Related Content Comparing Investments This calculator compares the net gain of a taxable investment versus a tax-favored one. Systematic Withdrawals in Retirement Taking regular, periodic withdrawals during retirement can be quite problematic. It May Be Time for a Financial Checkup It’s never a bad time to speak with your financial professional about changes in your situation.