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 From Boats to Brokers From the Dutch East India Company to Wall Street, the stock market has a long and storied history. 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.