If you made contributions to the TSP after your qualifying retirement coverage error was previously corrected, OPM will compute the lost earnings on your make-up contributions to the TSP under the following circumstances:
You were in: | And were previously corrected to: | And under these rules you elect: |
CSRS | FERS | FERS. |
CSRS Offset | FERS | |
Social Security-Only | FERS | No election required. |
Social Security-Only | CSRS | |
Social Security-Only | CSRS Offset |
5 C.F.R. § 839.1002