The State of Delaware requires completion of this form to make payments to vendors. Successful completion of this form enables the creation of a State of Delaware vendor record. The Taxpayer ID (SSN or EIN) and Applicant (vendor) name are submitted to the Internal Revenue Service for "matching." If the Taxpayer ID and name do not match, the vendor record cannot be approved.

It is the applicant's responsibility to select the appropriate 1099 Withholding Type and Class. If incorporated, a business is not subject to 1099 reporting unless the business is providing legal or medical services.

If you have questions about completing this form or specific comments about a form that you have submitted, please contact vendor services by phone at 302-672-5000 or by email at

Click the link below to complete and submit a State of Delaware Substitute Form W-9: