Retiring the 4% Rule A portfolio created with your long-term objectives in mind is crucial as you pursue your dream retirement. Share | Have A Question About This Topic? Name Email Address Message Thank you! Oops! 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? Three Key Questions to Answer Before Taking Social Security When to start? Should I continue to work? How can I maximize my benefit? My Retirement Savings Estimate how long your retirement savings may last using various monthly cash flow rates.