Ind. Code § 5-10.3-6-8
(b) Subject to the provisions of this section, a political subdivision may do the following:
(3) Stop the political subdivision's participation in the fund by:
(c) The withdrawal of a political subdivision's participation in the fund is effective on a termination date established by the board. The termination date may not occur before all of the following have occurred:
(1) The withdrawing political subdivision has provided written notice of the following to the board:
(2) The expiration of:
(g) With respect to members of the fund who have creditable service with the withdrawing political subdivision and who are not employees as of the date of the notice under subsection (c), the withdrawing political subdivision must contribute the amount that the board determines is necessary to fund fully the service for those members that is attributable to service with the withdrawing political subdivision. The contribution by the withdrawing political subdivision must be made in a lump sum or in a series of payments over a term determined by the board that does not exceed thirty (30) years.
As added by Acts 1977, P.L.53, SEC.3. Amended by P.L.28-1984, SEC.5; P.L.22-1993, SEC.4; P.L.241-2015, SEC.16.