N.C. Gen. Stat. § 90-300

A licensee shall annually pay to the Board a fee in an amount established by the General Assembly for a renewal of his license. A 30-day grace period shall be allowed after expiration of a license during which the license may be renewed on payment of a fee in an amount established by the General Assembly. The Board may suspend the license of any person who fails to renew his license before the expiration of the 30-day grace period. After expiration of the grace period, the Board may renew such a license upon the payment of a fee in an amount established by the General Assembly. No person who applies for renewal whose license was suspended for failure to renew shall be required to submit to any examination as a condition of renewal.