Calculation of unearned premiums. (Effective July 15, 2026) (1) Upon cancellation of credit personal property insurance for any reason prior to the scheduled maturity date of the indebtedness, the insurer shall promptly refund or credit the debtor any unearned premium in accordance with subsection (2) of this section, except an insurer shall not be required to refund or credit an amount of less than five dollars ($5). (2) (a) Except as provided in paragraph (b) of this subsection, the method of calculating unearned premium due under subsection (1) of this section shall be the method in the credit personal property insurance policy, certificate, plan, or contract as filed with the commissioner before or after July 15, 2026. (b) If a method for calculating unearned premium due under subsection (1) of this section is not set forth in the credit personal property insurance policy, certificate, plan, or contract, the method shall be the method set forth in the underlying credit transaction for the refund of finance charges.