"SECTION 126. Tax on Winnings. - Every person who wins in horse races shall pay a tax equivalent to ten percent (10%) of his winnings or 'dividends', the tax to be based on the actual amount paid to him for every winning ticket after deducting the cost of the ticket: Provided, That in the case of winnings from double, forecast/quinella and trifecta bets, the tax shall be four percent (4%). In the case of owners of winning race horses, the tax shall be ten percent (10%) of the prizes.

"The tax herein prescribed shall be deducted from the 'dividends' corresponding to each winning ticket or the 'prize' of each winning race horse owner and withheld by the operator, manager or person in charge of the horse races before paying the dividends or prizes to the persons entitled thereto.

"The operator, manager or person in charge of horse races shall, within twenty (20) days from the date the tax was deducted and withheld in accordance with the second paragraph hereof, file a true and correct return with the Commissioner in the manner or form to be prescribed by the Secretary of Finance, and pay within the same period the total amount of tax so deducted and withheld.