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 A Look at Systematic Withdrawals This calculator may help you estimate how long funds may last given regular withdrawals. Tax Deductions: Catch Them All! Most of us pay too much in taxes because we aren’t aware of all the tax deductions available. Global and International Funds Investors seeking world investments can choose between global and international funds. What's the difference?