Ind. Code § 4-9.1-1-9

Sec. 9. If at any time there are more than sufficient moneys in a trust fund, as determined in section 7 of this chapter, to meet the immediate requirements of the trust fund, the moneys may be invested in the certificates or notes issued under section 8 of this chapter, on the condition that any of the moneys so invested shall be returned to the fund from which received when needed to meet the demands of the fund. To meet the demands of the fund, the board may make temporary loans as authorized in section 8 of this chapter.