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 Global and International Funds Investors seeking world investments can choose between global and international funds. What's the difference? The Investment Risk No One’s Ever Heard Of You face a risk for which the market does not compensate you, that can not be easily reduced through diversification. Keys to Investing for Retirement There are some key concepts to understand when investing for retirement.