Il Mileage Reimbursement 2024. Effective january 1, 2024, the mileage reimbursement rate for employees using private passenger vehicles for university business will increase from 65.5 cents per mile to 67 cents per mile. Fy24 travel guide for state of illinois employees.

A standard rate applies to most of conus. 67 cents per mile driven for business use, up 1.5 cents from 2023.