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 What Smart Investors Know Smart investors take the time to separate emotion from fact. Four Really Good Reasons to Invest There are four very good reasons to start investing. Do you know what they are? How Compound Interest Works Use this calculator to better see the potential impact of compound interest on an asset.