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 | Related Content Federal Income Tax Use this calculator to estimate your income tax liability along with average and marginal tax rates. Donating Art: Taxation Abstraction The tax rules that govern donating art are complex and confusing. Take a closer look. Home Mortgage Deduction Use this calculator to assess the potential benefits of a home mortgage deduction.