June 07, 2019 13:53 Updated Follow “Creditable service” is the amount of time that can be counted when we calculate your monthly PERF or TRF retirement benefit. Related articles What does service credit have to do with my monthly defined benefit? What is my PERF pension benefit? What is service credit? How many years of creditable service must I have in order for my spouse or child to receive a survivor benefit from PERF? When can I retire from PERF or TRF?