Last listed contribution rates remain in effect until changed.
| Period | Percent of covered payroll | |||||
| From July 1 | To June 30 |
Member rate | Employer rate | |||
| TRS 1 TRS 2 |
TRS 3 | TRS 1 TRS 2 |
TRS 3 | Health Insurance |
||
| 1988 | 2008 | 9.855% | 13.105% | |||
| 2008 | 2010 | 9.855% | 10.855% | 13.105% | 14.105% | |
| 2010 | 2011 | 10.105% | 10.855% | 13.355% | 14.105% | 0.25% |
| 2011 | 2012 | 10.355% | 10.855% | 13.605% | 14.105% | 0.5% |
| 2012 | 2013 | 10.855% | 10.855% | 14.105% | 14.105% | 1% |
| 2013 | 2014 | 11.355% | 11.355% | 14.605% | 14.605% | 1.5% |
| 2014 | 2015 | 12.105% | 12.105% | 15.355% | 15.355% | 2.25% |
| 2015 | 12.855% | 12.855% | 16.105% | 16.105% | 3% | |
space
| Period | Percent of covered payroll | |
| From July 1 | To June 30 | Critical Shortage Rate |
| 1995 | 1996 | 4.69% |
| 1996 | 1997 | 4.6% |
| 1997 | 1998 | 4.7% |
| 1998 | 1999 | 4.71% |
| 1999 | 2000 | 1.78% |
| 2000 | 2001 | 1.89% |
| 2001 | 2002 | 2.85% |
| 2002 | 2003 | 3.56% |
| 2003 | 2004 | 4.81% |
| 2004 | 2005 | 5.8% |
| 2005 | 2006 | 7.31% |
| 2006 | 2008 | 8.94% |
| 2008 | 2009 | 10.2% |
| 2009 | 2010 | 10.69% |
| 2010 | 2011 | 11.92% |
| 2011 | 2012 | 13.91% |
| 2012 | 2013 | 15.16% |
| 2013 | 2014 | 17.9% |
| 2014 | 2015 | 19.7% |
| 2015 | 2016 | 21.49% |
| 2016 | 2017 | 21.21% |
| 2017 | 2018 | 22.14% |
| 2018 | 2019 | 24.92% |
| 2019 | 2020 | 24.67% |
| 2020 | 2021 | 24.8% |
| 2021 | 2022 | 25.42% |