1. A member insurer may offset against its premium tax liability to this state an assessment described in section 376.738 to the extent of twenty percent of the amount of such assessment for each of the five calendar years following the year in which such assessment was paid. In the event a member insurer should cease doing business, all uncredited assessments may be credited against its premium tax liability for the year it ceases doing business.

2. A member insurer exempt from chapter 148 may offset against its sales or use tax liability to this state an assessment described in section 376.738 to the extent of twenty percent of the amount of such assessment for each of the five calendar years following the year in which such assessment was paid. In the event a member insurer should cease doing business, all uncredited assessments may be credited against its sales or use tax liability for the year it ceases doing business.

3. Any sums which are acquired by refund, pursuant to the provisions of section 376.738, from the association by member insurers, and which have theretofore been offset against premium taxes as provided in subsection 1 of this section or have theretofore been offset against sales or use taxes as provided in subsection 2 of this section, shall be paid by such insurers to this state in such manner as the tax authorities may require. The association shall notify the director that such refunds have been made.