Comparing Investments This calculator compares the net gain of a taxable investment versus a tax-favored one. 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? Address Thank you! Oops! Related Contents Home Mortgage Deduction Use this calculator to assess the potential benefits of a home mortgage deduction. “Dirty Dozen” Tax Scams to Watch For Every year the IRS releases its list of tax scams, spotlighting some ways that people try to separate you from your money. Social Security Taxes Estimate how much of your Social Security benefit may be considered taxable.