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 | Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content Global and International Funds Investors seeking world investments can choose between global and international funds. What's the difference? Required Reading: The Economic Report of the President The Economic Report of the President can help identify the forces driving — or dragging — the economy. Impact of Taxes and Inflation Estimate the potential impact taxes and inflation can have on the purchasing power of an investment.