N.M. Stat. § 4-44-28
All county officers shall respectively charge and collect all fees, commissions, mileage and per diem heretofore and now, or which hereafter may be authorized by law to be charged and collected for official services rendered by them, and shall keep an accurate and itemized account thereof, and on or before the tenth day of each month pay the same over to the county treasurer of their respective counties, accompanying each remittance by a verified copy of the itemized account covered thereby, which verified copy shall be retained on file by said treasurer. All such county officers shall in like manner account for and pay over to the county treasurer of their respective counties, all such fees, commissions, mileage and per diem heretofore earned and hereafter collected for official services rendered by them from the respective dates when they qualified as such officers.
NMS § 4-44-28