Vendor Self Service

Vendor Self Service (VSS) provides vendors with web-based access to information stored in the City of Southlake Financial database. Using VSS, existing vendors can enter and maintain their contact and remittance information, view 1099 data, purchase orders, invoices and contracts. All vendors must register in VSS.

VSS requires vendors who exist in the database to register using the VSS website to gain access to their information. In order to successfully link a vendor file, a vendor identification number is required. Vendor ID numbers can be found on both purchase orders and checks. The vendor enters the number in the Vendor ID box during registration. To avoid processing delays, please follow all instructions provided in the vendor tutorials. If you experience any difficulties with VSS or need confirmation on your vendor number, you may send a request to


Existing Vendor Instructions
New Vendor Instructions

Once completed, the registration process creates a new record in the Vendors program. The City of Southlake VSS administrator will activate the record and grant the vendor’s user ID access to the appropriate pages in VSS before the vendor can fully utilize the site. 

Visit Vendor Self Service portal now

Additional Information and Instructions

House Bill 1295 Texas Ethics Commission
Vendor Commodity Codes
Terms and Conditions
Prompt Payment Act
Conflict of Interest Questionnaire (CIQ) Information & Samples
IRS Form W-9 (scroll down to "General Instructions")