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? Investing with Your Heart For some, the social impact of investing is just as important as the return, perhaps more important. Keys to Investing for Retirement There are some key concepts to understand when investing for retirement.