Vendor Self Service System (VSS)

The Pima County Vendor Self Service System allows you, as a Vendor, to manage your account information, view your financial transactions and much more. Click on the Vendor Self Service Portal (VSS) link below to begin the electronic application process to register as a Vendor. Please disable your pop-up blocker to access all site areas.

Vendors MUST register at least 48 hours in advance AND submit a signed W-9 Form to the Vendor Relations Coordinator to fully activate your account. Any Solicitation Response submitted prior to your account being fully activated may not be accepted. 

If you believe you are already registered as a vendor, select the VSS link below, select 'Register' and search for an existing account using your TIN or business name (for a business) or last name and SSN (for an individual).

Before you are awarded a Contract, Purchase Order or Master Agreement, your business must have an ACTIVE vendor record in VSS.

Vendor Self Service Portal (VSS)

• Vendor Registration Instructions
• Compatible Browsers
•  W-9 Form Fax to (520) 724-3646
• Frequently Asked Questions