Basic pay
Basic pay means basic pay as defined in 5 U.S.C. 8331. For CSRS and FERS employees, it is the rate of pay used in computing any amount the individual is otherwise required to contribute to the Civil Service Retirement and Disability Fund as a condition of participating in the Civil Service Retirement System or the Federal Employees' Retirement System, as the case may be. For members of the uniformed services, it is basic pay payable under 37 U.S.C. 204 and compensation received under 37 U.S.C. chapter 206.