Potential Income from an IRA Estimate your monthly and annual income from various IRA types. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Share | Related Content 18 Years Worth of Days The average retirement lasts for 18 years. Are you prepared to fill that many days? Important Birthdays Over 50 Here's a look at several birthdays and “half-birthdays” that have implications regarding your retirement income. Retirement Plan Distributions There are a number of ways to withdraw money from a qualified retirement plan.