(a) Except as provided by Subsection (e), a guarantee described by Section 1112.001 that is in a policy or coupon issued after September 5, 1955, shall be treated as a definite contract benefit and valued according to this section and the reserve requirements of Chapter 425.
(b) Except as provided by Subsection (c), for a policy or coupon issued before the date determined under Section 1105.002(a) or (b), as applicable to the company, a contract benefit described by Subsection (a) shall be valued using the reserve valuation net premium for the benefits that is a uniform percentage of the gross premiums.

(c) A policy described by Subsection (b) that contains a contract benefit described by Subsection (a) may be valued on a basis that provides for not more than one year preliminary term insurance.
(d) For a policy or coupon issued on or after the date determined under Section 1105.002(a) or (b), as applicable to the company, a contract benefit described by Subsection (a) shall be valued using the commissioners reserve valuation method described by Section 425.064.
(e) A provision of this section relating to reserves does not apply to a policy issued before September 7, 1955.