5 CFR Part 591, Appendix B
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
This appendix lists the places where a post differential has been approved and shows the differential rate to be paid to eligible employees. The differential percentage rate shown is paid as a percentage of an employee's rate of basic pay.
| Geographic coverage | Percentage differential rate |
|---|---|
| American Samoa (including the island of Tutuila, the Manua Islands, and all other islands of the Samoa group east of longitude 171° west of Greenwich, together with Swains Island) | 25 |
| Johnston Atoll | 25 |
| Midway Atoll | 25 |
| Territory of Guam and Commonwealth of the Northern Mariana Islands | 20 |
| Wake Atoll | 25 |