ÐÓ°É´«Ã½ Business Services

New Vendor Setup Request

To set up a new vendor, please:


  1. Vendor must fill out and sign the W-9.
  2. Submit Documentation
    Upload the W-9 to the ÐÓ°É´«Ã½ Business Services SharePoint Site.

  3. If the vendor is outside California:
    • Submit the Out-of-State Vendor Form.
    • Review the 2025 Tax Withholding Notice

California requires 7% withholding on payments over $1,500 for services performed in-state. Vendors may submit Form 590 to claim exemption.