(1) Rating organizations may develop and make filings of supplementary rating information. These filings shall be made in accordance with 33-16-203 , MCA.

(2) An insurer may satisfy its obligation to make filings of supplementary rate information by becoming a participating insurer of a licensed rating organization and by authorizing the commissioner to accept filings by that organization on behalf of the insurer. The insurer's supplementary rating information shall be that filed by the rating organization, subject to any modifications filed by the insurer.