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. Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content Rightsizing for Retirement What does your home really cost? The Junk Drawer Approach to Investing It's easy to let investments accumulate like old receipts in a junk drawer. Inflation and Your Portfolio Even low inflation rates can pose a threat to investment returns.