(a) In this section, "general expenses" means expenses incurred by a group hospital service corporation in the operation of its business other than:
(1) a tax;
(2) a license fee;
(3) a commission; or
(4) an expense incurred in the performance of a contract:
(A) made directly or indirectly with this state or the United States; and
(B) under which the corporation does not assume an insurance risk.
(b) Subject to Subsection (c), a group hospital service corporation may not incur during a calendar year general expenses that exceed 20 percent of the premiums earned in that calendar year.
(c) For a group hospital service corporation earning $500 million or more in premiums in a calendar year, the maximum percentage of general expenses that may be incurred during a calendar year is reduced by one-half percent for each $50 million of premiums earned to a maximum percentage of 15 percent.