(1) To qualify for and maintain authority to transact insurance in this state on or after July 21, 1965 and before January 1, 1999, a domestic, foreign, or alien insurer shall possess and thereafter maintain unimpaired capital and surplus in an amount determined adequate by the commissioner to continue to comply with section 403 but not less than $1,000,000.00. The commissioner shall take into account the risk based capital requirements as developed by the national association of insurance commissioners in order to determine adequate compliance with section 403.

  (2) To qualify for and maintain authority to transact insurance in this state on or after January 1, 1999, a domestic, foreign, or alien insurer shall possess and thereafter maintain unimpaired capital and surplus in an amount determined adequate by the commissioner to continue to comply with section 403 but not less than $7,000,000.00. The commissioner shall take into account the risk based capital requirements as developed by the national association of insurance commissioners in order to determine adequate compliance with section 403.

  (3) In addition to the minimum capital and surplus specified in subsections (1) and (2), an insurer applying for an initial certificate of authority after July 21, 1965 in this state shall possess and maintain surplus or additional surplus in an amount determined by the commissioner adequate to comply with section 403 for the kind or kinds of insurance it writes or proposes to write, but in no event less than $500,000.00.

  (4) Except as provided by section 407, every insurer authorized to transact insurance in this state may transact life insurance or property insurance but not both, unless it was authorized to transact such other kind or kinds of insurance in this state immediately prior to January 1, 1965. For the purpose of this section, life insurance includes any 1 or more of the insurances described in section 602 and 606; property insurance includes any 1 or more of the insurances described in chapter 6, excepting only section 602 and those provisions of section 632 that apply to insurances described in section 602. Nothing in this section shall be construed to broaden the authority of reciprocal insurers.

  (5) Except as provided in subsection (7), an insurer authorized to transact insurance prior to July 21, 1965 may continue to transact insurance so long as it maintains the minimum financial requirements of section 408. However, an insurer authorized to transact insurance prior to July 21, 1965, that attains the level of minimum capital and surplus required by subsection (1) shall maintain compliance with this section unless the direct premiums written and any reinsurance assumed by the insurer in an annual period are less than the insurer’s surplus.

  (6) Except as provided in subsection (7), an insurer authorized to transact insurance on or after July 21, 1965 and before January 1, 1999 that attains the level of minimum capital and surplus required by subsection (2) shall maintain compliance with this section unless the direct premiums written and any reinsurance assumed by the insurer in an annual period are less than the insurer’s surplus.

  (7) An insurer shall not be authorized to transact legal expense insurance unless it meets the capital and surplus requirements of subsections (1), (2), and (3).

  (8) Notwithstanding the specific requirements of this section, domestic, foreign, and alien insurers shall also comply with the standard set forth in section 403.