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 Compound Interest Works Use this calculator to better see the potential impact of compound interest on an asset. Insurance Needs Assessment: When You're Newly Married Marriage changes everything, including your insurance needs. Jane Bond: Infiltrating the Market Agent Jane Bond is on the case, cracking the code on bonds.