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 Why Medicare Should Be Part of Your Retirement Strategy How Medicare can address health care needs in your retirement strategy. 3 Ways to Save Without Tax Deferral Tax deferral versus tax-efficient vehicles like Roth 4019k)s, Roth IRAs and Life Insurance. Commitment and Money Conversations Talking about money isn’t as scary as it seems.