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. Related Content Retirement Is a Beginning Key questions to answer when you are considering retirement. How Women Can Prepare For Retirement Are women prepared for a 20-year retirement? Risk Perspective Is it possible to avoid loss? Not entirely, but you can attempt to manage risk.