23 CAR § 11-106 – Rates

(a) When rates are differentiated on the basis of sex, the insurer must justify, in writing to the satisfaction of the Insurance Commissioner, the rate differential.
(b) All rates:
1. (1) Shall be based on:
  1. (A) Sound actuarial principles; and
  2. (B) A valid classification system; and
2. (2) Must:
  1. (A) Be related to actual loss statistics; and
  2. (B) Use proven loss statistics, where possible.