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? Name Email Address Question Thank you! Oops! Related Content The Facts About Income Tax Millions faithfully file their 1040 forms each April. But some things about federal income taxes may surprise you. Donating Art: Taxation Abstraction The tax rules that govern donating art are complex and confusing. Take a closer look. Social Security Taxes Estimate how much of your Social Security benefit may be considered taxable.