Versions of 26 CFR 1.1563-1 - Definition of controlled group of corporations and component members and related concepts on LawServer 2024 26 CFR 1.1563-1 – Definition of controlled group of corporations and component members and related concepts 2023 26 CFR 1.1563-1 – Definition of controlled group of corporations and component members and related concepts 2022 26 CFR 1.1563-1 – Definition of controlled group of corporations and component members and related concepts 2021 26 CFR 1.1563-1 – Definition of controlled group of corporations and component members and related concepts 2015 26 CFR 1.1563-1 – Definition of controlled group of corporations and component members and related concepts 2014 26 CFR 1.1563-1 – Definition of controlled group of corporations and component members and related concepts