Check and Certified Funds Payments are accepted via Check, Cashier's Check, and Money Order. On the Check Made payable to Iowa State University.University ID or CST number in remit or memo line. Mailed Payments Payments can be mailed to:Treasurer's Office1220 Beardshear Hall515 Morrill Rd.Ames, IA 50011 Drop Box There is a drop box for payments on the ground floor of Beardshear Hall between the elevator and bathrooms. Envelopes are provided for security.Please do not put cash in the drop box!