Sec. 4. (a) To provide money for the purposes set forth in section 3 of this chapter, the unit shall create a special revolving fund to be known as the industrial development fund, into which any available and unappropriated money of the unit may be transferred by the unit's legislative body.
(b) The legislative body may also by ordinance levy a tax not to exceed one and sixty-seven hundredths cents ($0.0167) on each one hundred dollars ($100) of assessed value of all personal and real property within its jurisdiction. The proceeds of this tax shall be deposited in the industrial development fund. The unit may collect the tax as other municipal or county taxes are collected, or may set up a system for the collection and enforcement of the tax in the unit. Money in the industrial development fund may be used for any purpose authorized by this chapter and may be pledged for the payment of principal and interest on bonds or other obligations issued under this chapter.