Ark. Code Ann. § 14-123-315

The rate of depository interest to be paid by the depositories selected in accordance with § 14-123-314 and by those depositories selected in accordance with existing laws shall be such as, in the opinion of the board of directors or commissioners, is consistent with the security given and for the best interests of the district. However, if the board is unable to secure any interest on its deposits, then it is authorized to make such deposits without interest.