Ind. Code § 8-1.5-4-8
(c) If a surplus created in the bond and interest redemption account exceeds the interest and principal of any bonds becoming payable during the current calendar, operating, or fiscal year and during the next calendar, operating, and fiscal year, the board may transfer any excess over the surplus to either the operation and maintenance account, or the depreciation account, as the board may designate.
As added by Acts 1982, P.L.74, SEC.1.