(2) No county treasurer, county fiscal officer or district school board shall pay to the purchaser of any bond issued by a school district, or to any agency representing such purchaser, any commission whatsoever for the collection of the interest on or principal of any such bond. The county treasurer or county fiscal officer shall not be required to remit to the purchaser of any bonds or coupons the amount necessary to redeem them until the day such bonds or coupons are due. [Amended by 1965 c.100 §58a]