What Is My Life Expectancy? Estimate how many years you may need retirement assets or how long to provide income to a surviving spouse or children. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content How Income Taxes Work A quick look at how federal income taxes work. Tax Freedom Day Assess how many days you'll work to pay your federal tax liability. Creative Ways to Motivate Your Employees Five creative (and inexpensive) ideas for motivating your employees.