The Purchasing Division of the Finance Department for Washtenaw County has the responsibility to review specifications, establish terms and conditions, issue bid solicitations, and procure goods and services required for the operation of the County Government.

The Purchasing Divisions primary objective is to serve the citizens of Washtenaw County, the departments for which it acts as agent, and the business community using sound, prudent and consistent competitive bidding methods. All qualified vendors, whether individuals, small businesses, or large corporations, are invited to compete for the County's business.


The following is a list of units that have the responsibility for their own procurement:

  • Washtenaw County Road Commission
  • Washtenaw County Schools
  • Washtenaw County Community College

Other than the exceptions noted above, the sole point of contact for procurement is the Purchasing Division. Vendors should not contact departments unless the Purchasing Division has instructed them to do so and given them a contact person.

Tax Exemption

Washtenaw County as a Michigan Constitutional Corporation is exempt from sales tax per Act 167 of Public Acts established in 1933. Our Federal I.D. number is 38-6004894. This number may also be used as our tax exempt number.