(a) A county mutual insurance company shall maintain an unencumbered surplus which may be invested only in items listed in Section 822.204. The unencumbered surplus must be at least:
(1) $25,000, if the company is organized to write insurance coverage locally in only the county of its domicile;
(2) $50,000, if the company is organized to write insurance coverage in only the county of its domicile and any adjacent county; or
(3) an amount equal to the aggregate of the minimum capital and minimum surplus required under Sections 822.054, 822.202, 822.210, and 822.211, for a fire insurance company if the county mutual insurance company is organized to write insurance coverage statewide.
(b) Except as provided by Section 912.056, a county mutual insurance company is subject to Subchapter B, Chapter 404, and Sections 822.203, 822.210, and 822.212.