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. Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content Tax Deductions You Won't Believe Here are some examples of deductions from the IRS that were permitted and some that were, uh, too creative. How Income Taxes Work A quick look at how federal income taxes work. How to Bake a Pie-R-A Roth IRAs are tax-advantaged differently from traditional IRAs. Do you know how?