N.C. Gen. Stat. § 58-12-4

The General Assembly finds that an excess of capital over the amount produced by the risk-based capital requirements contained in this Article and in the formulas, schedules, and instructions referenced in this Article is desirable in the business of insurance. Accordingly, the General Assembly encourages insurers to seek to maintain capital above the risk-based capital levels required by this Article. Additional capital is used and useful in the insurance business and helps to secure an insurer against various risks inherent in or affecting the business of insurance but not accounted for or only partially measured by the risk-based capital requirements contained in this Article.