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 Pay Yourself First It sounds simple, but paying yourself first can really pay off. 5 Finance gifts for Mother’s Day Five great gift ideas to give your mom a financial boost. 3 Retirement myths for women Women can build a strategic retirement plan by putting the myths aside and planning for financial and emotional realities.