The University will reimburse up to the IRS rate. However, it is up to the department to approve the reimbursement at this rate. Some departments choose to set a lower rate to comply with budget restrictions. If you are reimbursed with the mileage rate, you will not be reimbursed for actual transportation expenses like fuel.
Use the following link (US GSA) for the most current Per Diem rates allowed by US city.
https://www.gsa.gov/travel/plan-book/per-diem-rates
Please do not use daily lodging rates. Per Diem is for meals and incidentals only.