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 Your DNA Test Preparing for the unexpected can make all the difference if your family relies on your income. How Compound Interest Works Use this calculator to better see the potential impact of compound interest on an asset. Annuity Comparison This calculator compares a hypothetical fixed annuity with an account where the interest is taxed each year.