Sources of taxes.
Section 21
SEC. 21. Sources of taxes.—The following taxes, fees, fees, etc. and charges in the nature of tax are deemed to be internal-revenue taxes: (a) The cedula tax; (b) The documentary tax; (c) The privilege taxes on business and occupation; (d) Specific taxes on manufactured products; (e) Taxes on resources of banks, receipts of insurance companies, and receipts of corporations paying a franchise tax; (f) Charges for forest products; (g) Fees for testing and sealing weights and measures; (h) Internal revenue, including the income tax, collected in the Philippine Islands under laws enacted by the Congress of the United States; (i) Taxes on signs, signboards, and billboards.