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? 5 Benefits of Working in Retirement Here are 5 reason why you may consider working through retirement. Roth 401(k) vs. Traditional 401(k) This calculator compares employee contributions to a Roth 401(k) and a traditional 401(k).