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. Estimating the Cost of College This worksheet can help you estimate the costs of a four-year college program. 5 Smart Investing Principles Principles that can help create a portfolio designed to pursue investment goals.