The district board may borrow money in any fiscal year, which shall not exceed the anticipated revenue of that fiscal year and which shall be repaid in the same fiscal year. Such money shall be borrowed upon such other terms as the board shall fix; provided, that interest shall not exceed 6 percent, computed annually or semiannually.

The district board may also issue warrants payable upon a future date in the same fiscal year as issued, which shall be evidentiary of the obligation to repay the money so borrowed and interest thereon, and for that purpose such warrant may bear such interest as is fixed by the terms of the agreement to repay.