Q: I am a Civil Service Retirement System optionally retired rehired annuitant. Because I am under CSRS for retirement, is my salary as a rehired annuitant subject to Social Security withholding?
A: As a pure CSRS rehire, you aren’t subject to Social Security deductions unless you were hired as a senior official. If you were, you’d be covered by CSRS Offset, and Social Security deductions would be mandatory.
