18 Years Worth of Days The average retirement lasts for 18 years. Are you prepared to fill that many days? Share | Have A Question About This Topic? Address Thank you! Oops! Related Contents The Power of Tax-Deferred Growth Why are 401(k) plans, annuities, and IRAs so popular? What Is an Annuity? Annuities are versatile tools that can help you save for retirement and generate income in retirement. Investment Strategies for Retirement Investment tools and strategies that can enable you to pursue your retirement goals.