Roth 401(k) vs. Traditional 401(k) This calculator compares employee contributions to a Roth 401(k) and a traditional 401(k). 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 When Does Your Personal Car Become a Commercial Vehicle? At what point can you call a personal vehicle commercial? Comparing Investments This calculator compares the net gain of a taxable investment versus a tax-favored one. Why Medicare Should Be Part of Your Retirement Strategy How Medicare can address health care needs in your retirement strategy.