At a certain point in the life of a corporation that operates more than one business, management may wish to separate the different businesses into two or more separate corporate entities. In most cases, demergers are structured based on the requirements of the corporate law in the place of domicile of the corporation. Typically, a demerger of a foreign corporation that follows the corporate law provisions of applicable foreign law would also be exempt from tax in the relevant country. However, when one of the shareholders is a U.S. individual or corporation, U.S. Federal tax considerations should be taken into account to prevent unexpected U.S. tax for a U.S. investor. Demergers are given tax-free treatment under U.S. tax law only if the requirements of Code §355 are met. If not met, both the corporation that undergoes the demerger and its shareholders recognize gain in connection with an actual or deemed distribution of appreciated property. While the foreign corporation may have no U.S. tax to pay, the U.S. investor may find that tax would be due in the U.S. if the foreign corporation undergoing the demerger is a C.F.C. Stanley C. Ruchelman and Daniela Shani explain the various categories of tax free demergers under U.S. tax concepts and the consequences of failing to meet the requirements in the context of a corporation formed outside the U.S.