How do I register for a NC Withholding Tax Identification Number? Ready to file your taxes?Contact Information North Carolina Department of Revenue PO Box 25000 Raleigh, NC 27640-0640 General information: 1-877-252-3052 NOTE - The Department will assign you a withholding, sales and use tax, motor vehicle lease and rental tax, scrap tire disposal tax, white goods disposal tax,. Semi-weekly filers must also file Form NC-. Each new withholding agent who is required to withhold North Carolina income tax must complete and file with the Department an application for a withholding. Complete to apply for a Sales and Use Tax Number. -When will you start selling or purchasing items subject to N.C. sales or use tax? When you complete your registration, you'll receive your 15-digit sales tax account number and your Sales Tax Certificate of Registration (Form ST-4). Many states provide limited time periods when sales tax is waived or reduced on categories of items.