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 Contributing to an IRA? Determine if you are eligible to contribute to a traditional or Roth IRA. Put It in a Letter A letter of instruction provides additional and more personal information regarding your estate. How Insurance Deductibles Work Knowing how insurance deductibles work can help you save money and give you peace of mind.