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 The Business Cycle How will you weather the ups and downs of the business cycle? Four Really Good Reasons to Invest There are four very good reasons to start investing. Do you know what they are? 5 Smart Investing Principles Principles that can help create a portfolio designed to pursue investment goals.