Okla. Stat. tit. 19 § 682
It shall be the duty of each and every county officer, county board, county commission and all members and employees of either thereof, to deposit daily in the official depository designated in Section 681 of this title, all monies, checks, drafts, orders, vouchers, funds, rentals, penalties, costs, proceeds of sale of property, fees, fines, forfeitures and public charges of every kind received or collected by virtue or under color of office, except that each county officer, county board, and county commission is hereby authorized to keep in the office, from this deposit, no more than One Thousand Five Hundred Dollars ($1,500.00) to be used for their change needs. The amount so retained shall not be cumulative so that after each such deposit there shall not be on hand more than authorized by this section. A notation of the retention of this money shall be made in the proper accounting records. All checks, drafts, orders and vouchers so deposited shall be credited and cleared at par, and should payment be refused on any check, draft, order or voucher, should the same prove otherwise worthless, the amount thereof and any costs accruing thereon shall be a charge against the account theretofore credited with the same. Each county officer is hereby authorized to assess and collect a fee of Thirty-five Dollars ($35.00) for each worthless check, draft, order or voucher. All monies when so received by the county treasurer, as such official depository, shall be deposited in interest-bearing accounts in financial institutions designated and qualified as county depositories as now provided by law and shall draw interest, subject to deduction of financial institution charges for maintaining, processing and collateralizing the account, which interest shall be paid monthly; and, when collected, shall be credited to the respective funds and accounts so earning the same; provided, that all interest collected on monies deposited pursuant to the provisions hereof shall be paid into the county treasury monthly by the authority to whose financial institution account the same shall have accrued and shall be credited to the general or contingent fund of the county, except that in civil cases all interest earned on funds, other than court costs, deposited in court by litigants shall, when so ordered by the court upon deposit, be disposed of as the court orders. This provision shall only apply to such deposit in excess of One Thousand Dollars ($1,000.00).
Okla. Stat. tit. 19, § 682