"TITLE XI - ALLOTMENT OF INTERNAL REVENUE

"CHAPTER I - DISPOSITION AND ALLOTMENT OF NATIONAL INTERNAL REVENUE IN GENERAL

"SECTION 283. Disposition of National Internal Revenue. - National internal revenue collected and not applied as hereinabove provided or otherwise specially disposed of by law shall accrue to the National Treasury and shall be available for the general purposes of the Government, with the exception of the amounts set apart by way of allotment as provided for under Republic Act No. 7160, otherwise known as the Local Government Code of 1991.

"In addition to the internal revenue allotment as provided for in the preceding paragraph, fifty percent (50%) of the national taxes collected under Sections 106, 108 and 116 of this Code in excess of the increase in collections for the immediately preceding year shall be distributed as follows:

"(a) Twenty percent (20%) shall accrue to the city or municipality where such taxes are collected and shall be allocated in accordance with Section 150 of Republic Act No. 7160, otherwise known as the Local Government Code of 1991; and

"(b) Eighty percent (80%) shall accrue to the National Government.

"SECTION 284. Allotment for the Commission on Audit. - One-half of one percent (1/2 of 1%) of the collections from national internal revenue taxes not otherwise accruing to special accounts in the general fund of the national government shall accrue to the Commission on Audit as a fee for auditing services rendered to local government units, excluding maintenance, equipment, and other operating expenses as provided for in Section 21 of Presidential Decree No. 898.

"The Secretary of Finance is hereby authorized to deduct from the monthly internal revenue tax collections an amount equivalent to the percentage as herein fixed, and to remit the same directly to the Commission on Audit under such rules and regulations as may be promulgated by the Secretary of Finance and the Chairman of the Commission on Audit.