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 | Related Content Bridging the Confidence Gap In the world of finance, the effects of the "confidence gap" can be especially apparent. The New Red Scare: Chinese Ownership of U.S. Debt China owns a portion of the total outstanding debt of the U.S. Government. What does it mean? Keys to Investing for Retirement There are some key concepts to understand when investing for retirement.