March 06, 2018 04:09 Updated Follow If you are a PERF or TRF retiree, you will receive a 13th check in a specific year only if the Indiana General Assembly passes legislation. Click here for more information. Related articles How much will my 13th check be? What is a 13th Check? When do I get a COLA if I'm in PERF? When do I get my retirement benefit? What if I don’t know my username and password to log on to my PERF or TRF account?