Section 52National Internal Revenue Code of 1997 (Republic Act No. 8424), Sec. 52

Corporation Returns. -

(A) Requirements. - Every corporation subject to the tax herein imposed, except foreign corporations not engaged in trade or business in the Philippines, shall render, in duplicate, a true and accurate quarterly income tax return and final or adjustment return in accordance with the provisions of Chapter XII of this Title. The return shall be filed by the president, vice-president or other principal officer, and shall be sworn to by such officer and by the treasurer or assistant treasurer.

(B) Taxable Year of Corporation. - A corporation may employ either calendar year or fiscal year as a basis for filing its annual income tax return: Provided, That the corporation shall not change the accounting period employed without prior approval from the Commissioner in accordance with the provisions of Section 47 of this Code.

(C) Return of Corporation Contemplating Dissolution or Reorganization. - Every corporation shall, within thirty (30) days after the adoption by the corporation of a resolution or plan for its dissolution, or for the liquidation of the whole or any part of its capital stock, including a corporation which has been notified of possible involuntary dissolution by the Securities and Exchange Commission, or for its reorganization, render a correct return to the Commissioner, verified under oath, setting forth the terms of such resolution or plan and such other information as the Secretary of Finance, upon recommendation of the commissioner, shall, by rules and regulations, prescribe.

The dissolving or reorganizing corporation shall, prior to the issuance by the Securities and Exchange Commission of the Certificate of Dissolution or Reorganization, as may be defined by rules and regulations prescribed by the Secretary of Finance, upon recommendation of the Commissioner, secure a certificate of tax clearance from the Bureau of Internal Revenue which certificate shall be submitted to the Securities and Exchange Commission.

(D) Return on Capital Gains Realized from Sale of Shares of Stock not Traded in the Local Stock Exchange. - Every corporation deriving capital gains from the sale or exchange of shares of stock not traded thru a local stock exchange as prescribed under Sections 24 (c), 25 (A)(3), 27 (E)(2), 28(A)(8)(c) and 28 (B)(5)(c), shall file a return within thirty (30) days after each transactions and a final consolidated return of all transactions during the taxable year on or before the fifteenth (15th) day of the fourth (4th) month following the close of the taxable year.