​The outcome of the five-yearly benchmarking and rebasing of South Africa’s national accounts statistics, jointly undertaken by Statistics South Africa (Stats SA) and the South African Reserve Bank (the Bank), is disseminated in this issue of the Quarterly Bulletin. In addition to the comprehensive revision of national accounts aggregates and time series data, the current revisions also reflect the incorporation of conceptual, methodological and classification changes following the partial implementation of the latest edition of the System of National Accounts (2008 SNA). Further to making revised and comparable data covering the period 2006 up to the third quarter of 2014 available in this publication, revised national accounts estimates forthe years 1946 to 2014 will be published in a supplement to the March 2015 Quarterly Bulletin.Comprehensive revisions to South Africa’s national accounts statistics are typically done every five years in order to incorporate new or additional information that became available, to reclassify transactions where necessary and to rebase estimates at constant prices. Market developments and the concomitant emergence of new products and services furthermore continuously necessitate changes to compilation practices. The 2008 SNA provides an international standard macroeconomic statistical framework for this purpose and replaced the 1993 version of the SNA; both publications were compiled under the auspices of the United Nations, the European Commission, the International Monetary Fund (IMF), the World Bank and the Organisation for Economic Co-operation and Development (OECD).The five-yearly comprehensive revisions differ from the regular annual national accounts revisions due to the scope of the changes being made and the length of the period to which the revisions apply. The most recent set of revisions drew upon information from all relevant censuses released by Stats SA during the period 2009 to 2014, a number of sectoral surveys and technical reports, and more detailed producer and consumer price information. Most notable were the 2010/11 Income and Expenditure Survey of Households; the results of the Population Census of 2011; the 2010 General Household Survey; various issues of the Annual Financial Statistics (AFS) survey; various issues of the Quarterly Financial Statistics (QFS) survey; the South African National Survey of Research and Experimental Development produced by the Centre for Science, Technology and Innovation Indicators (CeSTII) on behalf of the Department of Science and Technology (DST); technical reports from the Department of Agriculture, Forestry and Fishing; the Abstract of Agricultural Statistics for various years; and information sourced from the Department of Human Settlements