2 U.S.C. § 33 : US Code - Section 33: Senators' salaries

Search 2 U.S.C. § 33 : US Code - Section 33: Senators' salaries

Senators elected, whose term of office begins on the 3d day of
January, and whose credentials in due form of law shall have been
presented in the Senate, may receive their compensation from the
beginning of their term.