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 U.S. Personal Savings Rate What can be learned from the savings rate? How to Make the Tax Code Work for You When you take the time to learn more about how it works, you may be able to put the tax code to work for you. Jane Bond: Infiltrating the Market Agent Jane Bond is on the case, cracking the code on bonds.