A. In the event a county does not enact an ordinance imposing a county health care gross receipts tax pursuant to Section 7-20D-3 [7-20E-18] NMSA 1978, the county shall, by ordinance to be effective July 1, 1993, dedicate to the county-supported medicaid fund an amount equal to a gross receipts tax rate of one-sixteenth of one percent applied to the taxable gross receipts reported during the prior fiscal year by persons engaging in business in the county. For purposes of this subsection, a county may use funds from any existing authorized revenue source of the county.

B. For each county that has in effect an ordinance enacted pursuant to Subsection A of this section on July 1 of each year, the taxation and revenue department shall certify to the county by September 15, 1993 and by September 15 of each subsequent fiscal year the amount of gross receipts reported for the county for purposes of the gross receipts tax during the prior fiscal year. Upon certification by the department, any county enacting an ordinance pursuant to Subsection A of this section shall transfer to the county-supported medicaid fund by the last day of March, June, September and December of each year an amount equal to a rate of one-sixty-fourth of one percent applied to the certified amount.

C. The requirements of an ordinance enacted pursuant to this section may be terminated for a county only on the effective date of an ordinance enacted by the county imposing the county health care gross receipts tax; provided that if the effective date of the ordinance imposing the tax is January 1, the termination does not apply to the payments required for September and December of that year.