Ready to file your taxes? Contact Information North Carolina Department of Revenue PO Box 25000 Raleigh, NC 27640-0640 General information: 1-877-252-3052Use ORBIT to access your 1099 or W-2 tax forms. 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. Employers are obligated to withhold income in accordance with the laws of the state where the noncustodial parent is employed. NC Withholding Tax Laws: Employers are required to withhold state income tax from employees' wages. Employers are required to withhold taxes from paychecks for any North Carolina resident employees or nonresident employees working within state boundaries. Search statewide judicial forms. Source and any other property subject to withholding for support under the law of this State. (6). Form NC4: You also need to give employees Form NC4, the North Carolina Employee's Withholding Allowance Certificate, to fill out.