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 Question Thank you! Oops! Related Content Choices for Your 401(k) at a Former Employer Individuals have three basic choices with the 401(k) account they accrued at a previous employer. Healthcare Costs in Retirement Without a solid approach, healthcare expenses may add up quickly and potentially alter your spending. How Income Taxes Work A quick look at how federal income taxes work.