Vendor Information

Vendors selling products and services to the state should register at

More Resources and Information for Vendors

List of agency contracts.
Affidavit of Work Authorization Annual Renewal Process
If a vendor has previously submitted an Affidavit of Work Authorization to a state agency or university, the entity may renew the Affidavit of Work Authorization here.
Business Compliance
  • Registration of business name (if applicable) with the Secretary of State 
  • Certificate of authority to transact business/certificate of good standing (if applicable)
  • Proper payment of taxes (e.g., city/county/state/federal)
  • State and local certifications (e.g. professions/occupations/activities)
  • Licenses and permits (e.g. city/county license, sales permits)
  • Insurance (e.g. worker's compensation/unemployment compensation)
Vendors should refer to the Missouri Business Portal for additional information.
Cooperative Procurement Members Listing
Directory of cooperative procurement members.
E-Verify Customer Support and Samples
Samples of acceptable E-Verify documentation and listing for E-Verify Customer Support.
MissouriBUYS is a secure, web-based statewide eProcurement system implemented by the State of Missouri with its partner, Perfect Commerce (a PROACTIS Company), using their WebProcure application. MissouriBUYS includes vendor (self-service) registration and profile updates, solicitations (both formal and informal), consolidated public Bid Board and public Contract Board, online bidding for vendor responses, and order management (requisitions, purchase orders, contracts, catalogs, receipts, and invoices).
Missouri Procurement Technical Assistance Centers (MOPTAC)
The Missouri Procurement Technical Assistance Centers (MO PTAC) assist businesses — including small, disadvantaged and women owned firms — in obtaining federal, state and local government contracts.
Missouri Service-Disabled Veteran Business Enterprise Information
Instructions, application form and database regarding certification as a Missouri Service-Disabled Veteran Business Enterprise (SDVE).
Missouri Sheltered Workshop Products/Services Locator
Locator tool for finding Missouri based Sheltered Workshops with services and/or products that they would be able to provide.
Missouri Small Business & Technology Development Centers
The Missouri Small Business & Technology Development Centers (MO SBTDC) help businesses in every stage. From concept to startup, growth to renewal, mature to succession.
Single Feasible Source Purchases
 All Single Feasible Source purchases are listed on the MissouriBUYS Bid Board.  Under the Bid Types filter, select Single Feasible Source - Services, Single Feasible Source - IT, and/or Single Feasible Source - Commodity to locate the Single Feasible Source purchases posted by the Office of Administration, Division of Purchasing.  Single Feasible Source purchases posted by other state agencies can be located by selecting Single Feasible Source or MoDOT Single Feasible Source.
Suspended/Debarred Vendors
List of suspended/debarred vendors.
Tips on Doing Business with the State of Missouri
Get tips on doing business with the state of Missouri.
Vendor Services Portal
This portal includes a link to the Vendor Input/ACH-EFT form that is used for adds, deletes and changes and enables electronic transfer of funds from the State to a vendor. This portal also includes a Vendor Payment Search feature to search for payments to your account from the State.


MBE/WBE, Blind/Sheltered Workshop, and SDVE Participation Report - Contractor Form
Form to attest participation by Minority Business Enterprises/Women Business Enterprises, Blind/Sheltered Workshops, and SDVEs in state funded projects.
Form for quarterly submission by contractors.
Form for quarterly submission by contractors.
Form to attest participation by Blind/Sheltered Workshop Organizations in state funded projects.

State Statutes

Chapter 34, RSMo
Missouri statutes pertaining to procurement.
Sales/Use Tax - section 34.040.7, RSMo
Missouri statute regarding sales/use tax payments required of vendors by the state.
Conflict of Interest - section 105.454, RSMo
Missouri statute regarding conflict of interest in selling to the state.

Rules and Regulations

Code of State Regulations
Missouri code of state regulations (CSR) in regard to selling to the state.