A series for the GDP deflator in index form is produced by the Treasury from data provided by the Office for National Statistics (ONS) and the Office for Budget Responsibility (OBR). GDP deflator outturn are based on the ONS Quarterly National Accounts release (at the end of each quarter). However, a more recent version of ONS GDP outturn may be used depending on when the OBR updates its GDP deflator forecasts (usually at Budget and Spring Statement).
Forecasts covering periods 2018-19 to 2023-24 (2019 to 2023) are from the OBR as at the Spring Statement 13 March 2019.
Outturn data are First Quarterly Estimate of GDP figures from the ONS, 11 February 2019. GDP deflators from 1955-56 to 2017-18 have been taken directly from fiscal period ONS series L8GG. GDP deflators from 1955 to 2018 have been taken from calendar period ONS series MNF2. Non-seasonally adjusted money GDP for calendar and fiscal periods are taken from ONS series BKTL. For fiscal periods only, seasonally adjusted money GDP series YBHA has also been included.
The next GDP deflator update will be shortly after the ONS Quarterly National Accounts release scheduled for 29 March2019.
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