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Change in Period of Periodic Revision of the Price Indexes

April 13, 2009
Bank of Japan
Research and Statistics Department

Starting with the release in April, the period of periodic revision of the price indexes (Corporate Goods Price Index, Input-Output Price Index of the Manufacturing Industry by Sector and Corporate Services Price Index) has changed from one year to one and a half years. The change is aimed at improving the accuracy of indexes.

The timing of scheduled revisions is kept unchanged. Revisions are made to the released indexes twice a year (in April and October, along with the release of the preliminary figures for the March and September indexes).

For inquiries, please contact the following section of the Bank of Japan:
Price Statistics Section, Research and Statistics Department (e-mail: