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 Managing an Inheritance A windfall from a loved one can be both rewarding and complicated. The Cost of Procrastination Don't let procrastination keep you from pursuing your financial dreams and goals. Long-Term-Care Needs Determine your potential long-term care needs and how long your current assets might last.