CFR > Title 5 - Administrative Personnel > CHAPTER I—OFFICE OF PERSONNEL MANAGEMENT > SUBCHAPTER B—CIVIL SERVICE REGULATIONS (parts 110 to 990) > PART 839—CORRECTION OF RETIREMENT COVERAGE ERRORS UNDER THE FEDERAL ERRONEOUS RETIREMENT COVERAGE CORRECTIONS ACT > SUBPART J—Lost Earnings for Certain Make-up Contributions to the TSP (§839.1001 to §839.1004) > 839.1002—Will OPM compute the lost earnings if my qualifying retirement coverage error was previously corrected and I made TSP make-up contributions?

839.1002—Will OPM compute the lost earnings if my qualifying retirement coverage error was previously corrected and I made TSP make-up contributions?

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