The question of whether there was an erroneous treatment of self-employment income or of wages is determined under the provisions of law and regulations applicable with respect to the year or other taxable period as to which the error was made. The fact that the error was in pursuance of an interpretation, either judicial or administrative, accorded such provisions of law and regulations at the time the action involved was taken is not necessarily determinative of this question. For example, if a later judicial decision authoritatively alters such interpretation so that such action is contrary to the applicable provisions of the law and regulations as later interpreted, the error comes within the scope of section 6521.
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.