The Purchasing Division is responsible for maintaining vendor information for the City of New Haven. The City of New Haven requires that vendors file a W-9 Form, Vendor Application Form and Disclosure Form when requesting to do business with the city or when entity information has changed.

Empty headingThe Purchasing Division is responsible for maintaining vendor information for the City of New Haven. The City of New Haven requires that vendors file a W-9 Form, Vendor Application Form and Disclosure Form when requesting to do business with the city or when entity information has changed.

Vendor Self-Service

The City of New Haven's Vendor Self-Service (VSS) portal is a free, online vendor information management system available 24 hours a day, 7 days a week, 365 days a year. It allows businesses to maintain accurate company information in the City's financial database and helps ensure invoices are processed without delay. Vendors who do not register and verify their information — including providing a W-9 form — may experience delays in invoice processing.

 https://newhavenctvendors.munisselfservice.com/Vendors/default.aspx

How to Register

1. Create your account. Visit the portal and click the Register button. You'll be guided through a five-step process to enter your firm's information. Fields marked with a red asterisk are required.
2. Add contacts and addresses. Use a generic company email accessible by more than one person and add at least one additional contact to receive notifications. Each email address must be unique.
3. Upload required documents. In order to do business with the City of New Haven, you must upload a current W-9 form after completing registration. Additional documents — such as disclosure forms, local compliance documents, certifications, and insurance certificates (when applicable) — can also be uploaded here.
4. Review and submit. Before finalizing, review all of your information for accuracy. You can make edits at this stage before submitting your registration.

Keeping Your Information Up to Date

Log back into the portal at any time to update your company's address, contacts, banking information, or compliance documents. Keeping your profile current ensures the City can reach you about opportunities and process payments promptly.

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Vendor On-boarding forms:

• W-9 Form                                                                                          

• Vendor Application

• Disclosure Form

Requests should be directed to the Purchasing Department. If you have any questions after you have completed the required information, you can contact us by:

Phone: 203-946-8201 or;

E-mail: Purchasing@newhavenct.gov,

Subject Line: 'Vendor Onboarding'

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Thank you for your interest in the City of New Haven.

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