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. What the New Tax Bill Means for You What does the Tax Reform and Jobs Act mean for you? Social Security Taxes Estimate how much of your Social Security benefit may be considered taxable.