Indiana Code Title 36. Local Government § 36-8-8-8

Sec. 8. (a) Each fund member shall contribute during the period of the fund member's employment or for thirty-two (32) years, whichever is shorter, an amount equal to six percent (6%) of the salary of a first class patrolman or firefighter.  However, the employer may pay all or a part of the contribution for the member.  The amount of the contribution, other than contributions paid on behalf of a member, shall be deducted each pay period from each fund member's salary by the disbursing officer of the employer.  The employer shall send to the system board each year on March 31, June 30, September 30, and December 31, for the calendar quarters ending on those dates, or an alternate date established by the rules of the system board, a certified list of fund members and a warrant issued by the employer for the total amount deducted for fund members' contributions.

(b) After December 31, 2011, an employer shall submit:

(c) Except as provided in section 7(n) or 7.2 of this chapter, if a fund member ends the fund member's employment other than by death or disability before the fund member completes twenty (20) years of active service, the system board shall return to the fund member in a lump sum the fund member's contributions plus interest at a rate specified by rule by the system board.  If the fund member returns to service, the fund member is entitled to credit for the years of service for which the fund member's contributions were refunded if the fund member repays the amount refunded to the fund member plus interest at a rate specified by rule by the system board in either a lump sum or a series of payments determined by the system board.