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 Impact of Taxes and Inflation Estimate the potential impact taxes and inflation can have on the purchasing power of an investment. A Brief History of Estate Taxes Federal estate taxes have long since been a lucrative source of funding for the federal government. Deciding When to Take Social Security One of the most common questions people ask about Social Security is when they should start taking benefits.