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 Question Thank you! Oops! Related Content Retirement Plan Detectives A couple become Retirement Plan Detectives, searching records from old employers. How Financial Professionals Are Compensated Read this overview to learn how financial advisors are compensated. Countdown to College Preparing for college means setting goals, staying focused, and tackling a few key milestones along the way.