Contributing to an IRA? Determine if you are eligible to contribute to a traditional or Roth IRA. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Share | Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content Roth 401(k) vs. Traditional 401(k) This calculator compares employee contributions to a Roth 401(k) and a traditional 401(k). Understanding Marginal Income Tax Brackets An inside look at how marginal income tax brackets work. Understanding the Basics of Medigap Policies Important as it is, Medicare does not cover the full range of health-care expenses you may experience in your golden years.