December 11, 2018 15:22 Updated Follow You will be fully vested for a pension benefit after 10 years of service in the Teachers' Retirement Fund (TRF). Related articles When will I be vested in PERF? What is vesting? How do I choose a retirement date? What is the Modified Cash Refund Plus Five-Year Certain and Life retirement benefit option? I was in public service in Indiana many years ago. How do I find out if I still have money in PERF?