4. Japanese Period - Income from amusements, manufactures, professions, and business licenses, sales of the National Sweepstakes and sale of government bonds.
5. Contemporary Period - Tax Commission (1959), Omnibus Tax Law (1969), 1986 Tax Reform Program, value-added tax (VAT), Comprehensive Tax Reform Program (1997), Republic Act 7716, Expanded Value-Added Tax (E-VAT), Sin Tax Reform, Republic Act 10351, TRAIN Law