State & Local Government


Wisconsin eSupplier Portal for Bidders

Below are a few helpful hints on how to make the system work for you:

  • Registration in VendorNet vs eSupplier – Even if you were registered in VendorNet, it is still necessary to complete your registration in eSupplier before you will be able to update your eSupplier profile, add or change the NIGP codes associated with your account, or respond to a solicitation
  • Locating Registration Instructions – Go to, click on Enter Bidder Site on the right side of the screen, and look at the FAQs (or Frequently Asked Questions) on the right side of your screen. These FAQs link to Job Aids that will walk you through the registration process and navigating the eSupplier system.
  • Transferring NGIP Codes -If you had a VendorNet account and would like to automatically transfer all of your NIGP codes to the new system, make sure you register in eSupplier using the same email address you had in VendorNet. If you need to update your email address in eSupplier, you will be able to do so after registration.
  • Bidders Located Outside the U.S.  – If you are a bidder located outside the U.S., you may have experienced issues registering for a WAMS account as international addresses are not supported. You may leave the address information empty on the WAMS registration page since these are not required fields. You will be able to add your address information directly into your eSupplier account once you have logged in.
  • Who to Contact for Support? – Technical questions:, (844) WIS-STAR (947-7827). General procurement questions:, (608) 264-7897 or (800) 482-7813 (U.S. only).

Additional information can be found in the State Bureau of Procurement Vendor’s Guide

The Wisconsin Department of Transportation’s (WisDOT) Disadvantaged Business Enterprise (DBE) program sets a national goal of 10% of federal highway and transit funds with disadvantaged small businesses.

For additional information on this topic, please contact our staff of experts at or 414-270-3600