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 Question Thank you! Oops! Related Contents 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? How Will Working Affect Social Security Benefits? Knowing the rules may help you decide when to start benefits. An Inside Look at Retirement Living A number of questions and concerns need to be addressed to help you better prepare for retirement living.