The Regulations amend the Corporation Tax (Treatment of Unrelieved Surplus Advance Corporation Tax) Regulations 1999 (S.I. 1999/358) (“the principal Regulations”). The amendments are made in consequence of the abolition of dividend tax credit and the repeal of the term “franked investment income” contained in section 1126 of the Corporation Tax Act 2010 (c. 4). The amendments apply to distributions of companies made in an accounting period which commences on or after 6th April 2016.