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 Can I Refinance My Mortgage? This calculator can help determine whether it makes sense to refinance your mortgage. Why Regular Rebalancing Makes Sense Without your knowing, your investment portfolio could be off-kilter. Deciding When to Take Social Security One of the most common questions people ask about Social Security is when they should start taking benefits.