Ind. Code § 36-8-8.5-12
(a) The retirement benefit for a member who enters the DROP and retires on:
(2) the date the member retires because of a disability as provided under section 16.5(d) of this chapter;
is determined under this chapter rather than under the provisions of the applicable fund.
(b) A member who retires on the member's DROP retirement date or on the date the member retires because of a disability as provided under section 16.5(d) of this chapter may elect to receive a retirement benefit in one of the following forms:
(2) A retirement benefit paid by the applicable fund and consisting of:
(B) an additional amount, paid as the member elects under subsection (c), calculated by multiplying:
(c) A member who chooses the retirement benefit described in subdivision (b)(2) must elect to receive the additional amount described in subdivision (b)(2)(B) as:
(1) a lump sum paid on:
(2) three (3) equal annual payments:
(A) commencing on:
(B) thereafter paid on the anniversary of:
(d) In calculating a member's retirement benefit under this chapter, the applicable fund must use the lesser of:
As added by P.L.62-2002, SEC.5. Amended by P.L.148-2007, SEC.3.