At least age 62, meet the Rule of 80 (combined age and years of service credit equal at least 80), and have at least five years of service credit. The majority of current school employees can still retire under a Rule of 80 (age plus years of TRS credit total at least 80), with no age restrictions.You can receive Social Security retirement benefits as early as age 62. In addition, if you resume TRS membership at a later date, you may be subject to different retirement eligibility criteria and early-age retirement reductions. Receiving SSD after taking early retirement. They may, however, choose to enroll in the university's UTSaver voluntary retirement programs. If you have at least 240 service credits (20 years), you are eligible to retire at any age. Early retirement benefits will continue to be available at age 62, but they will be reduced more. Your age plus your years of service equals 75 (also called the Rule of 75). How much are premiums?