If the time for the payment of any tax has been extended pursuant to section 6164, such extension shall expire:
(a) On the last day of the month in which falls the last date prescribed by law (including any extension of time granted the taxpayer) for the filing of the return for the taxable year of the expected net operating loss; or
(b) If an application for a tentative carryback adjustment provided in section 6411 with respect to such loss is filed before the expiration of the period specified in paragraph (a) of this section, on the date on which notice is mailed by registered mail prior to September 3, 1958, and by either registered or certified mail on and after September 3, 1958, to the taxpayer that such application is allowed or disallowed in whole or in part.
The preliminary Code is a preliminary release of the Internal Revenue Code of 1986 (the "Code") by the Office of the Law Revision Counsel and is subject to further revision before it is released again as a final version. The source of the preliminary Code used in TouchTax is available here: https://uscode.house.gov/download/download.shtml. The Code is a consolidation and codification by subject matter of the general and permanent laws of the U.S. prepared by the Office of the Law Revision Counsel of the U.S. House of Representatives. The Treasury Regulations are a codification of the general and permanent rules published in the Federal Register by the departments and agencies of the federal government. The version of the Treasury Regulations available within TouchTax is part of the Electronic Code of Federal Regulations which is not an official legal edition of the Code of Federal Regulations but is an editorial compilation of CFR material and Federal Register amendments produced by the National Archives and Records Administration's Office of the Federal Register (OFR) and the Government Publishing Office. The source of the CFR used in TouchTax is available here: https://www.govinfo.gov/bulkdata/ECFR/title-26. Those using TouchTax for legal research should verify their results against the printed versions of the Code and Treasury Regulations. TouchTax is copyright 2024 by Com-Lab (Mobile). Learn more at http://touchtax.edrich.de.