Home | State Directory | About
Selling to the State of Wisconsin
Vendor registration, procurement portals, and key resources
This guide covers vendor registration, procurement portals, and key resources for selling products and services to the State of Wisconsin.
Vendor Registration
Wisconsin uses VendorNet and eSupplier for vendor registration and procurement. To do business with the state, you must register as a vendor through their portal.
- Wisconsin Vendor Registration Portal — register your business and set up your vendor profile
- Wisconsin Procurement Division (Home Page) — overview of purchasing policies and requirements
Finding Bid Opportunities
Active solicitations, RFPs, and bid opportunities are posted on the state’s eProcurement platform:
- Wisconsin eProcurement / Bid Portal — browse and respond to current solicitations
What You Will Need to Register
- FEIN (Federal Employer Identification Number) — your business tax ID. Learn more about FEIN/EIN
- UEI (Unique Entity Identifier) — obtained through SAM.gov. Learn more about UEI
- CAGE Code — assigned when you register in SAM.gov. Learn more about CAGE codes
- Business legal name, address, phone, email, and authorized contacts
- Commodity/service codes — used to match your business with relevant bid opportunities
Additional Information
Wisconsin uses VendorNet for bid opportunities and eSupplier for vendor registration and management.
Key Wisconsin Procurement Links
Vendor Help: (800) 482-7813
Last updated: April 2026. Links and requirements are verified periodically. If you find a broken link, please let us know.