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? Related Content Social Security Benefits: How Much Will I Receive Calculating your potential Social Security benefit is a three-step process. FIRE Retirement This short, informative article teaches the basics of the FIRE movement. All Muni Bonds Are Not Created Equal Gaining a better understanding of municipal bonds makes more sense than ever.