Taxation Internal revenue law Law and legislation Income tax Law Internal revenue Taxation - Law and legislation - Philippines - Cases Business tax Regulation Tax Tax administration and procedure Income tax - Philippines Internal revenue law - Philippines Taxation - Law and legislation - Philippines Value-added tax Bank deposits Bookkeeping Bookkeeping - Philippines - Law Business tax - Philippines Business taxes Cases Chinese language Cigar manufacture and trade Conversation and phrase books Handbooks, manuals, etc History Inheritance and succession Internal revenue law - Philippines Metric system Philippines. Bureau of Internal Revenue. Revenue Regulations 5-2010