357.Section 76 modifies regulation 7(3) of the Tax Credits (Income Thresholds and Determination of Rates) Regulations 2002 so as to change the rate at which working tax credit is withdrawn from 39 per cent to 41 per cent for the tax year 2011/2012. This modification corrects an omission in secondary legislation that amended the 2002 regulations. Subsection (2) ensures that decisions already taken by Her Majesty’s Revenue and Customs since 6 April 2011 on the basis of a 41 per cent withdrawal rate are treated as having been correctly made.