N.C. Gen. Stat. § 20-178
When any person, firm, or corporation shall tender to the Division any uncertified check for payment of any tax, fee or other obligation due by him under the provisions of this Article, and the bank upon which such check shall be drawn shall refuse to pay it on account of insufficient funds of the drawer on deposit in such bank, and such check shall be returned to the Division, an additional tax shall be imposed by the Division upon such person, firm or corporation, which additional tax shall be equal to ten percent (10%) of the tax or fee in payment of which such check was tendered: Provided, that in no case shall the additional tax be less than ten dollars ($10.00); provided, further, that no additional tax shall be imposed if, at the time such check was presented for payment, the drawer had on deposit in any bank of this State funds sufficient to pay such check and by inadvertence failed to draw the check upon such bank, or upon the proper account therein. The additional tax imposed by this section shall not be waived or diminished by the Division.
N.C. Gen. Stat. § 20-178