Indiana Code Title 27. Insurance § 27-1-29-12

Sec. 12. (a) The commission shall impose an assessment to be paid by each member of the fund.  The assessments to be paid by members of the fund shall be set in fairness to all members, based upon the uniform application of actuarial principles and underwriters' rating principles.  A member shall pay its assessment in accordance with rules of the commission.

(b) The assessment for the first twelve (12) months of a political subdivision's membership in the fund shall be no greater than the payment made by the political subdivision to a commercial insurer for like coverage for the twelve (12) month period immediately preceding the political subdivision's application to become a member.  In the case of an applicant not insured by a commercial insurer, the commission shall set the amount of the assessment for the first twelve (12) months of membership in accordance with subsection (a).