May 05, 2022 14:47 Updated Follow Your retirement date with PERF or TRF is the official date that we calculate your benefits and is always the first day of the month following your last day of work. It does not refer to your last day of work or the day you mail your application. Related articles At what age should I retire? How do I retire from the Public Employees' Retirement Fund? If my last day of work is January 1, when is my retirement date? When do I get my retirement benefit? Will my pension money run out?