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 How Stocks Work Understanding how a stock works is key to understanding your investments. Investing with Your Heart For some, the social impact of investing is just as important as the return, perhaps more important. When Does Your Personal Car Become a Commercial Vehicle? At what point can you call a personal vehicle commercial?