March 2011 At Budget 2011 the Office for Budget Responsibility certified all but one policy costing presented to it by the government.  All Budget 2011 costings are detailed in the HMT policy costings document.  Our approach to the certification of costings is set out in annex B of the document. Read the Policy Costings document

October 2010 The Office for Budget Responsibility certified costings for some Annually Managed Expenditure measures included within the October 2010 Spending Review. The costings we scrutinised are set out in the HM Treasury Spending Review Policy Costings document. Our certification is contained in Chapter 3. Read the Policy Costings document