Mileage Reimbursement Goes up Jan. 1, 2011 St. Thomas Newsroom December 17, 2010 The current mileage reimbursement amount of 50 cents per mile will increase to 51 cents per mile for University of St. Thomas business use of personal vehicles, the Accounts Payable Department announced yesterday. This change is in accordance with the IRS. Employee mileage reimbursements for business use will be calculated at the increased rate for travel on or after Jan. 1, 2011. Questions? Call Edie Dull in Accounts Payable, (651) 962-6382.