The California State University system adheres to the IRS guidelines for standard mileage rate for business travel; therefore, the standard mileage rate for business travel occurring on or after Jan. 1 has increased from 62.5 cents per mile to 65.5 cents per mile. Concur Request and Expense has been updated to reflect this new business travel rate. … Continue reading Mileage Reimbursement Rates Updated for 2023