Linked below is a letter explaining UW-Madison’s tax exempt status, including relevant ID numbers. This includes the tax exempt certificate and may be used to respond to vendor inquiries.
Download Sales Tax Exempt Status Letter/ Substitute W-9 ( NetID login required)
This letter is used to send to entities requesting information on our tax exempt status and includes the University of Wisconsin’s ID numbers. Should it be required, a copy of the University of Wisconsin System Tax Exempt Certificate is also available.