Ill. Admin. Code tit. 80, § 2900.115
All business travel shall be reimbursed according to the maximum rates established by the federal government for travel expenses, subsistence expenses, and mileage allowances under 5 U.S.C. Subchapter I and 41 CFR 300 through 304. (Section 12-2(f) of the Act) The current rates can be found at https://www.gsa.gov/travel.
(Source: Amended at 48 Ill. Reg. 3427, effective February 23, 2024)