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 Retiring in a Post-Pandemic World Imagine your ideal post-pandemic retirement with this animated video. What is Guaranteed Retirement Income? Get the facts about guaranteed retirement income. What Is My Current Cash Flow? Assess whether you are running “in the black” or “in the red” each month.