Connect NC DOT for information about the payment for your tax form. Contact the office closest to you to schedule a time to review the form before you mail it. Form W-9 should be mailed to: Form W-9 (Refunding Submitting), P.O. Box 825, Raleigh, NC 27. Please provide the following information to the Office. Name and address of the taxpayer and business. Payment information including name and address of payee of the tax return. A telephone number where you can be reached within 24 hours for further questions. If payment is received for a return filed in a calendar year ending on or after October 21, 2018, the first installment of any withheld tax that is owed is due no later than the due date of the next return covering the period beginning on or after October 28, 2018, and ending on or before January 1, 2019. Payment for the return that includes this information will be received as of November 17, 2018. P.O. Box 825, Raleigh, NC. 27 North Carolina State Treasurer's Office P.O. Box 516, Raleigh, NC 27 Request for Taxpayer.