Supplier Registration

Instructions

The registration form should be used to perform the following:

• Register for a new Washington Statewide Vendor Number.
• New legal name (ex: change of last name, change of company name).
• Changing your IRS Tax Classification type (ex. changing from sole proprietor to partnership).

Note: If you are a foreign entity, please submit an IRS form W-8. You can find this form at the IRS website.

You must have a US Taxpayer Identification Number (TIN) to register with Washington State.

PART A – Contact Information:

• Mailing Address – Please indicate the address you wish to receive remittance and/or correspondence.
• Contact Name – The person named here will be contacted to approve any future changes to your record including direct deposit. (If you are a business, a contact person’s name MUST be provided).
• Telephone Number – The telephone number of the authorized contact person.
• Email Address – The Email address provided will be used as the primary contact method (you will be contacted via email with your Statewide Vendor Number).

PART B – Registration (W-9):

• All numbered sections, except section 4, are required.
• Section 1: Check a box to indicate if you are a business entity or an individual:
  • Legal Business Name – if registering as a business or organization (payment goes to the business).
  • Individual’s Name – if registering as an individual (payment goes to you personally).
• If you are a medical or legal/attorney entity and file with the IRS as a corporation or partnership, please indicate your entity type in box 4.
• You MUST provide your legal address in lines 5 and 6.
• A Social Security Number (SSN) or Employer Identification Number (EIN) is required. Do NOT provide both

If using the PDF version, please sign with a pen (an “ink signature”). Stamped, Inserted or Electronic Signatures will NOT be accepted.