Section 704 - Extensions of time(a) The Department of Revenue may, upon application made to it in such form as it shall prescribe, on or prior to the last day for filing any tax report, tax return, or bonus return, grant to the person, association, or corporation, required to file such report or return, an extension of not more than sixty days within which such report or return may be filed without penalty, or in case the Federal income tax authorities at any time grant a longer extension of time for filing tax reports with the Federal government, the department may grant an additional extension of time for filing capital stock, franchise, corporate loans and foreign bonus reports of not more than thirty (30) days after the termination of the Federal extension, but the amount of tax due shall in such cases nevertheless be subject to interest from the due dates and at the rates fixed by this act. The department may, in its discretion, grant such further extensions of time within which the aforesaid tax returns or reports may be filed without penalty, as may be necessary to permit the filing thereof at the same time any taxpayer's corporate net income tax report is required to be filed under the Corporate Net Income Tax Act or under any extension of time for the filing of such corporate net income tax report granted under said act to such taxpayer by the department. The department may also, in its discretion, extend generally, for a period not exceeding thirty (30) days, the time within which reports or returns may be filed for any tax. The provisions of this section shall not be construed to affect the provisions of any other act authorizing the department to grant extensions of time for filing corporate net income tax reports.(b) Whenever the last day of any period of time designated by any law providing for the imposition or collection of taxes shall fall on Saturday, Sunday, or on any day made a legal holiday by the laws of this Commonwealth or by the United States, such days shall be omitted from the computation of that period, and whenever the date for the filing of any report or return shall fall on Saturday, Sunday, or on any day made a legal holiday by the laws of the Commonwealth or by the United States, the report or return may be filed on the next regular business day.1929, April 9, P.L. 343, art. VII, § 704. Amended 1937, Feb. 2, P.L. 3, § 1; 1943, May 7, P.L. 229, § 2; 1953, July 20, P.L. 513, § 1; 1953, Aug. 19, P.L. 1146, § 2; 1957, July 13, P.L. 838, § 5; 1957, July 13, P.L. 850, § 2; 1967, Dec. 21, P.L. 881, § 1.