Ind. Code § 36-9-25-31

Sec. 31. To provide money to pay for general expenses of the board not chargeable to the cost of any property acquired or work done under a resolution of the board for which bonds of the district are issued, the board may issue the bonds of the district in an aggregate amount not to exceed two percent (2%) of the adjusted value of the taxable property within the district as determined under IC 36-1-15. The bonds are payable from a special tax, which the board shall levy annually at the rate required to finance the bonds. The tax shall be levied, collected, and expended according to section 32 of this chapter.