How to sell to Wisconsin government
Wisconsin splits bidding in two: vendors register on eSupplier to get NIGP-matched bid notices, while anyone can read bids on VendorNet without logging in. UW campuses and participating municipalities post on VendorNet too, so one eSupplier profile covers them.
Facts checked
Where Wisconsin posts bids
State agencies post on VendorNet.[1] Read bids on VendorNet, but notices and online responses come only through eSupplier.
Changed recently: The Supplier Diversity Program's DBE conversion process is paused while federal program updates are under review; MBE, WBE and DVB applications are still accepted.[2]
Open bids in Wisconsin right now
BidRover is tracking 101 open bids in Wisconsin, from state agencies and local governments. Most common categories:
- Utilities & telecommunications · 45
- Cloud & infrastructure · 40
- Software & digital services · 5
- Construction & facilities · 3
- Data & analytics · 1
- Environmental & energy · 1
- Financial & insurance services · 1
- General procurement · 1
- Telecom services to be used for the provision of healthcare.Wisconsin, United States · Due Nov 11, 2026
- Telecom services to be used for the provision of healthcare.Wisconsin, United States · Due Nov 11, 2026
- Telecom services to be used for the provision of healthcare.Wisconsin, United States · Due Nov 11, 2026
- Telecom services to be used for the provision of healthcare.Wisconsin, United States · Due Nov 11, 2026
- Telecom services to be used for the provision of healthcare.Wisconsin, United States · Due Nov 11, 2026
- Telecom services to be used for the provision of healthcare.Wisconsin, United States · Due Nov 11, 2026
Busiest buyers
- State of Wisconsin · 12 open bids
- Agnesian HealthCare · 10 open bids
- Monroe Clinic · 9 open bids
- Healthfirst Network Inc · 7 open bids
Get Wisconsin bids by email
How to register, step by step
- 01
Register on eSupplier Portal for Bidders
Start registration. Cost: Free. Create a WAMS ID, register on eSupplier and add NIGP codes for what you sell; you then get emails for matching solicitations from state agencies, UW System and municipalities.[1]
- 02
Choose your commodity codes
Notifications are sent by the codes in your vendor profile. Pick every code that describes your work, and revisit them when you add a service.
- 03
Get certified if you qualify
Wisconsin Supplier Diversity Program (MBE, WBE, DVB), through the Wisconsin Department of Administration, Supplier Diversity Program. Certifies minority-owned, woman-owned and service-disabled veteran-owned businesses.[2]
- 04
Watch the other buyers
Cities and counties in Wisconsin run their own vendor systems. See the guides for City of Milwaukee below.
What you will typically need
Exact requirements vary by portal; the registration page linked above is the authority. Most ask for:
- Your legal business name and address exactly as registered with the state, and your federal tax ID (EIN, or SSN for some sole proprietors).
- A signed IRS Form W-9, which most buyers collect before they can pay you.
- Commodity codes (NIGP, UNSPSC or NAICS, depending on the portal) for every product and service you sell.
- A contact who will receive bid notices, plus any business license or registration the jurisdiction requires.
- Certificates of insurance and, for construction, bonding capacity: these are usually requested per bid rather than at registration.
Certification programs
| Program | Certifying office | Notes |
|---|---|---|
| Wisconsin Supplier Diversity Program (MBE, WBE, DVB) | Wisconsin Department of Administration, Supplier Diversity Program | Certifies minority-owned, woman-owned and service-disabled veteran-owned businesses. |
When a formal bid is required
Purchases of $5,000 or less need only reasonable price judgment, $5,001 to $50,000 need at least three bids, and over $50,000 need a formal solicitation.[1]
Tips
- Contracts over $50,000 usually need a written affirmative action plan; firms under 50 employees may be exempt.
- Keep your NIGP codes current in eSupplier, since notices are matched to them.
Wisconsin sources BidRover reads
- Wisconsin eSupplier Solicitations · State agencies
Related guides
Questions
Where does Wisconsin post government bids?
State agencies post on VendorNet (https://vendornet.wi.gov/). Many cities, counties and authorities in Wisconsin post on their own sites as well, so check the ones you want to sell to.
How do I register as a vendor with Wisconsin?
Register through eSupplier Portal for Bidders (https://esupplier.wi.gov/). Cost: Free. Create a WAMS ID, register on eSupplier and add NIGP codes for what you sell; you then get emails for matching solicitations from state agencies, UW System and municipalities.
Does Wisconsin certify small or diverse businesses?
Wisconsin Supplier Diversity Program (MBE, WBE, DVB) (Wisconsin Department of Administration, Supplier Diversity Program): Certifies minority-owned, woman-owned and service-disabled veteran-owned businesses.
When does Wisconsin require a formal bid?
Purchases of $5,000 or less need only reasonable price judgment, $5,001 to $50,000 need at least three bids, and over $50,000 need a formal solicitation.