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. Related Content A Look at Diversification Diversification is an investment principle designed to manage risk, but it can't prevent against a loss. Social Security: Five Facts You Need to Know Here are five facts about Social Security that are important to keep in mind. Choose Your Own Retirement Adventure Retirement is one of the greatest adventures you’ll have. Which retirement adventure will you choose?