How to Retire Early Retiring early sounds like a dream come true, but it’s important to take a look at the cold, hard facts. Share | Related Content 18 Years’ Worth of Days The average retirement lasts for 18 years, with many lasting even longer. Will you fill your post-retirement days with purpose? Caring for Aging Parents As our nation ages, many Americans are turning their attention to caring for aging parents. Saving for Retirement This calculator can help you estimate how much you may need to save for retirement.