The North Carolina DOR "Where's My Refund" website says that due to enhanced identity theft protection measures, some North Carolina refunds may take longer than normal, which is 6-8 weeks for electronically-filed returns and 12 weeks for paper returns
If you efiled, double-check with this tool to be sure the state return was efiled successfully and accepted:
The following FAQ tells how to track a state refund. There may also be a FAQ or notice on your state tax agency's website with into on about how long it takes to get a refund, and how long to wait before phoning them.
FAQ: How do I track my state refund?