17.Paragraph 15 sets out the commencement provisions for income tax and corporation tax. The amendments made by paragraphs 2 to 5, 7 and 11 to 13 (and paragraph 1 in relation to them) have effect in relation to income tax advantages obtained on or after 24 March 2010. The amendment made by paragraph 6 (and paragraph 1 as far as it relates to it) are treated as having come into force on 1 April 2009. And the amendments to CTA will have effect in relation to corporation tax advantages obtained on or after 1 April 2010.