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 Should You Invest in Exchange Traded Funds? There are thousands of ETFs available. Should you invest in them? A Taxing Story: Capital Gains and Losses Understanding how capital gains are taxed may help you refine your investment strategies. How Will Working Affect Social Security Benefits? Knowing the rules may help you decide when to start benefits.