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 Will You Pay the AMT? Despite recent tax-law changes, many Americans are expected to pay the AMT this year. Understanding Marginal Income Tax Brackets An inside look at how marginal income tax brackets work. Tax Management Strategies Learn more about taxes, tax-favored investing, and tax strategies.