This document lists various Bureau of Internal Revenue (BIR) forms along with their filing deadlines. Some key points: - Form 2550M/Q for monthly/quarterly VAT returns and Form 2307 for certificates of tax withheld are generally due by the 10th of the month following the filing period. - Annual income tax returns for individuals on Form 1700 and corporations on Form 1702 are generally due by April 15 for individuals and the 15th day of the 4th month following the taxable year for corporations. - Withholding agents must submit various forms certifying taxes withheld such as Form 1601-C for compensation income by the 10th-15th day of the following