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 Tax Freedom Day Assess how many days you'll work to pay your federal tax liability. Get Paid for Going Green Those looking into environmentally minded home modifications may get a boost from Uncle Sam’s tax incentives. Home Mortgage Deduction Use this calculator to assess the potential benefits of a home mortgage deduction.