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How to register as a county vendor

To register as a county vendor, find the county's purchasing page, complete its vendor registration (on its website or bid platform), and provide a W-9, insurance certificate and the products and services you offer. Then ask the purchasing office to add you to its quote list.

Vendor registration is how a county knows you exist. It gets you notices of bids, invitations to quote, and the setup needed to get paid.

1. Find out how the county registers vendors

Look for a "Purchasing", "Bids" or "Vendors" page on the county website, or call the purchasing contact. Counties register vendors in one of three ways:

  • On their bid platform (BidNet Direct, Bonfire, OpenGov and others): see our platform pages.
  • On their own website or financial system (for example a vendor self-service portal).
  • On paper or by email, common in small rural counties.

2. Prepare your documents

Most counties ask for:

  • Form W-9 with your EIN.
  • Certificate of insurance (sometimes only when you win).
  • Business details: legal name, address, contacts, business type.
  • What you sell: NIGP or NAICS codes or categories.
  • Certifications, if you have them (HUB, MBE/WBE, veteran-owned).
  • State-specific forms. For example, Indiana counties ask about E-Verify, and Texas contracts may need Form 1295.

Save these once in your FactWise Vault; autofill reuses them for every county.

3. Choose your codes carefully

Notifications are sent by code or category. Choose every code for work you actually do, and no more. Too broad, and you'll be flooded with irrelevant notices; too narrow, and you'll miss bids.

4. Introduce yourself

Send a short email or call the purchasing office: what you sell, your service area, and a request to be invited to quotes. Ask:

  • How do you advertise bids and quotes?
  • Are there term contracts coming up for renewal?
  • Do you use cooperative contracts for what we sell?

5. Keep it current

Update your registration when your address, insurance or contacts change. Expired insurance or an old W-9 is a common reason for payment delays.

Questions

Does it cost money to register as a county vendor?

Registering with a county is normally free. Some commercial bid platforms charge for notification plans; check each platform's terms.

Do I have to register before I can bid?

It depends on the county. Some require registration to download documents or submit; others accept bids from anyone. Registering early avoids last-minute problems.

Last reviewed Oct 30, 2026. This is general information, not legal advice. Laws and thresholds change; check the current statute and the bid documents.

How to register as a county vendor | FactWise