In this subchapter:
(1) “Filer” means an insurance company that files rates, prospective loss costs, or supplementary rating information under this subchapter.
(2) “Insurance company” means a person authorized to engage in the business of workers’ compensation insurance in this state. The term includes:
(A) the Texas Mutual Insurance Company;
(B) a Lloyd’s plan under Chapter 941; and
(C) a reciprocal and interinsurance exchange under Chapter 942.
(2-a) “Premium” means the amount charged for a workers’ compensation insurance policy, including any endorsements, after the application of individual risk variations based on loss or expense considerations.
(3) “Prospective loss cost” means that portion of a rate that:
(A) does not include a provision for expenses or profit, other than loss adjustment expenses; and
(B) is based on historical aggregate losses and loss adjustment expenses projected by development to the ultimate value of those losses and expenses and projected through trending to a future point in time.
(4) “Rate” means the cost of workers’ compensation insurance per exposure unit, whether expressed as a single number or as a prospective loss cost, adjusted to account for the treatment of expenses, profit, and individual insurance company variation in loss experience, before applying individual risk variations based on loss or expense considerations. The term does not include a minimum premium.
(5) “Supplementary rating information” means any manual, rating plan or schedule, plan of rules, rating rule, classification system, territory code or description, or other similar information required to determine the applicable premium for an insured. The term includes increased limits factors, deductible relativities, and other similar factors and relativities.
(6) “Supporting information” means:
(A) the experience and judgment of the filer and the experience or information of other insurance companies;
(B) the interpretation of any other information on which the filer relied;
(C) a description of methods used in making a rate; and
(D) any other information the department requires to be filed.