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 Five Most Overlooked Tax Deductions Five overlooked tax deductions to help manage your tax bill. To Buy or Not to Buy The decision whether to buy or rent a home may have long-term implications. What Can a Million Dollars Buy You? $1 million in a diversified portfolio could help finance part of your retirement.