Business Expense Guidelines now show that, when hosting groups and guests with meals or refreshments, a tip/gratuity up to 20% of the charge is allowable, instead of the previous limit of 15%. See link for more info: https://ba.uoregon.edu/accounts-payable/hosting-refreshments-alcohol#Expenditure_Guidelines
Tips/Gratuities
When hosting groups or guests:
If the host can choose the amount of the tip/gratuity, then the tip/gratuity up to 20% of the charge is allowable. (Note: The tip/gratuity is included in the travel meal per diem amount used as a reasonableness guideline).
The 20% limit does not apply when the establishment adds a service charge for larger groups in lieu of gratuity. When the amount of the gratuity or service charge is not within the control of the purchaser, the full amount of the tip/gratuity billed by the establishment is allowable.
Note: Tips or fees for alcoholic beverage services are not reimbursable. These costs must be separated and included with alcoholic beverage purchase (and paid from non-UO funds).
