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 Big is Money? Learn a little about worldwide currency in this fun infographic RE: Retirement How does your ideal retirement differ from reality, and what can we do to better align the two? Retiring the 4% Rule A portfolio created with your long-term objectives in mind is crucial as you pursue your dream retirement.