Section 153National Internal Revenue Code of 1997 (Republic Act No. 8424), Sec. 153

Records to be Kept by Manufacturers; Assessment Based Thereon. - Manufacturers of articles subject to excise tax shall keep such records as required by rules and regulations recommended by the Commissioner and approved by the Secretary of Finance, and such records, whether of raw materials received into the factory or of articles produced therein, shall be deemed public and official documents for all purposes.

The records of raw materials kept by such manufacturers may be used as evidence by which to determine the amount of excise taxes due from them, and whenever the amounts of raw material received into any factory exceeds the amount of manufactured or partially manufactured products on hand and lawfully removed from the factory, plus waste removed or destroyed, and a reasonable allowance for unavoidable loss in manufacture, the Commissioner may assess and collect the tax due on the products which should have been produced from the excess.

The excise tax due on the products as determined and assessed in accordance with this Section shall be payable upon demand or within the period specified therein.