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 Potential Income from an IRA Estimate your monthly and annual income from various IRA types. How Will Working Affect Social Security Benefits? Knowing the rules may help you decide when to start benefits. A House Divided By understanding a few key concepts during a divorce, you may be able to avoid common pitfalls.