The department shall charge Coosa County for collecting the tax levied under this part in an amount or percentage of total collections as may be agreed upon by the commissioner and the Coosa County Commission. The charge shall not exceed two percent of the total amount of the tax collected in the county. The charge may be deducted each month from the gross revenues from the tax before certification of the amount of the proceeds due Coosa County for that month. The Commissioner of Revenue shall pay into the State Treasury all amounts collected under this part, as the tax is received by the department on or before the first day of each successive month. The commissioner shall certify to the Comptroller the amount collected and paid into the State Treasury for the benefit of Coosa County during the month immediately preceding the certification. The Comptroller shall issue a warrant each month payable to the County Treasurer of Coosa County in an amount equal to the certified amount which shall be paid into the county general fund.