There are two different areas on the NC Department of Revenue where you can pay a tax bill. One for paying when you have received a notice from them (in which case you would have a 'notice number') and one for simply paying your state balance due amount after filing your taxes.
Here is the link to the area where you would pay your state balance due amount (no notice number required):
https://eservices.dor.nc.gov/d400v/d400vContact.jsp
Here is the link to the area where you would pay a tax bill with a notice number:
https://eservices.dor.nc.gov/ofp/contact.jsp
