Every entry below is the rule as Philippines publishes it. It is a reference, not a calendar: where a deadline runs from something only you know, this page says so instead of showing a date.
This is the rule as published by the registry, checked against the primary source on the date shown. It is not your filing date. Where a deadline runs from incorporation, from a fiscal year the company itself elects, or from an event only you know about, no date can be derived here at all — the figure you see is the formula, not the answer. Extensions, transitional regimes and entity-specific exemptions are not reflected. Confirm with the registry before you rely on a date.
The year is the company's own, and that is why three of the five duties below carry a formula instead of a date. The evidence is in the deadline provision itself: Section 11 of the Ease of Paying Taxes Act, amending Section 77(B) of the Tax Code, prints two alternatives in one sentence — «The final adjustment return shall be filed on or before the fifteenth (15th) day of April» and «or on or before the fifteenth (15th) day of the fourth (4th) month following the close of the fiscal year». A statute that offers the fourth month after a fiscal year as an alternative to a calendar date is a statute that expects some corporations to keep a year other than the calendar year. Two things are deliberately not asserted here. The provisions that define the taxable year and govern accounting periods — Sections 22(Q) and 43 of the Tax Code — were not read for this entry, so nothing is said about how the choice is made, whether it needs notice or approval, or how a period shorter than twelve months is treated. The consequence for this page is concrete. The annual income tax return, the quarterly income tax declarations and the annual financial statements filed with the Securities and Exchange Commission are all counted from that year, and none can be printed as a calendar date until the company states which year it keeps. The two duties that do not depend on it in the same way are the quarterly value added tax return, which runs from the close of each taxable quarter, and the General Information Sheet, which runs from the date of the company's own annual meeting. Whether the taxable quarter for value added tax follows the calendar or the company's own year is not stated in the provisions read, and is not asserted.