(a) In the event that a district or a cooperative unit defined in section 123A.24, subdivision 2, has insufficient funds to pay its usual lawful current obligations, subject to section 471.69, the board may enter into agreements with banks or any person to take its orders. Any order drawn, after having been presented to the treasurer for payment and not paid for want of funds shall be endorsed by the treasurer by putting on the back thereof the words “not paid for want of funds,” giving the date of endorsement and signed by the treasurer. A record of such presentment, nonpayment and endorsement shall be made by the treasurer. The treasurer shall serve a written notice upon the payee or the payee’s assignee, personally, or by mail, when the treasurer is prepared to pay such orders. The notice may be directed to the payee or the payee’s assignee at the address given in writing by such payee or assignee to such treasurer, at any time prior to the service of such notice. No order shall draw any interest if such address is not given when the same is unknown to the treasurer, and no order shall draw any interest after the service of such notice.

(b) A district may enter, subject to section 471.69, into a line of credit agreement with a financial institution. The amount of credit available must not exceed 95 percent of average expenditure per month of operating expenditures in the previous fiscal year. Any amount advanced must be repaid no later than 45 days after the day of advancement.