The City of Dubuque, Iowa procures goods and services through a purchasing system that, for the most part, is decentralized. Departments primarily complete their own purchasing services.

Department responsibilities include:
The City of Dubuque requires that suppliers have on file with the Finance Department their vendor information and tax status.

The City requires all vendors complete Form W-9 Request for Taxpayer Identification and Certification. Vendors claiming tax exemption also complete Iowa Sales Tax Exemption Certificate.