The Senior Professional Performance Act of 2008 (Public Law 110-372, October 8, 2008) establishes a new pay system for senior level and scientific or professional (SL/ST) employees effective April 12, 2009. As of April 12, 2009, SL/ST employees will no longer receive locality pay. The table below covers the period beginning April 12, 2009.
| Structure of the SL/ST Pay System | Minimum | Maximum |
|---|---|---|
| Agencies with a Certified SL/ST Performance Appraisal System | 117787 | 177000 |
| Agencies without a Certified SL/ST Performance Appraisal System | 117787 | 162900 |