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? Systematic Withdrawals in Retirement Taking regular, periodic withdrawals during retirement can be quite problematic. Inflation & Retirement Estimate how much income may be needed at retirement to maintain your standard of living.