Rate of basic pay
Rate of basic pay means the rate of pay fixed by law or administrative action for the position to which the employee is or will be appointed before deductions and including any special rate under 5 CFR part 530, subpart C; locality-based comparability payment under 5 CFR part 531, subpart F; or similar payment or supplement under other legal authority, but excluding additional pay of any other kind. For example, rate of basic pay excludes a night differential under 5 U.S.C. 5343, an environment differential under 5 U.S.C. 5343(c)(4), or a similar payment under other legal authority.