Preamble
WHEREAS, the non-issuance of receipts or sales or commercial invoices, the possession or use of unregistered invoices or receipts, the possession or use of double or multiple sets of invoices or receipts and the unauthorized printing of such invoices or receipts result in underdeclaration of sales, receipts or income and consequently in the loss of substantial revenue to the government; WHEREAS, these pernicious practices have become rampant and remain unabated partly because the existing penalties prescribed therefor are very light; NOW, THEREFORE, I, FERDINAND E. MARCOS, President of the Philippines, by virtue of the powers vested in me by the Constitution, do hereby order and decree the following: