Everyone is different. You may decide to retire at age 60, but have a family member that decides to keep working until age 70. Regardless of when you would like to retire, there are certain ages that you should be mindful of because of IRS rules on retirement accounts or government benefit programs like Social Security or Medicare. Keep these ages in mind, and you’ll be prepared to optimize the benefits you get. I encourage you to read the well-written article by Matt Carey on Forbes.com that discusses The 7 Ages That Matter Most When Planning Retirement.