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 The Facts About Income Tax Millions faithfully file their 1040 forms each April. But some things about federal income taxes may surprise you. Teen Drinking and Your Liability Drinking may be a “rite of passage” for teens, but when it occurs in your home you may be held responsible for their actions. What Do Your Taxes Pay For? Here's a breakdown of how the federal government spends your tax money.