September domestic corporate goods price index (preliminary) up 6.8% year on yearPrices of things companies buy and sell from each other are still higher than a year ago
In the preliminary September Corporate Goods Price Index released by the Bank of Japan on October 13, 2026 (Reiwa 8), the domestic corporate goods price index fell 0.3% month on month and rose 6.8% year on year. The import price index (yen basis) fell 0.2% month on month and rose 24.5% year on year. The index shows price movements of goods traded between companies.
Key points
- Domestic corporate goods price index: -0.3% month on month, +6.8% year on year
- Export price index (yen basis): +0.5% month on month, +17.9% year on year
- Import price index (yen basis): -0.2% month on month, +24.5% year on year
- Agriculture, forestry and fishery products (contribution -0.42%) and petroleum and coal products (-0.15%) contributed to the month-on-month decline
What to do in practice
- Use your own data to organize how the unit prices of your main purchased items have moved from a year earlier
- In price revision negotiations, attach official price indices as one piece of supporting material
The Bank of Japan also checks every month the prices of goods that companies sell to other companies (corporate goods prices). In September they were 6.8% higher than a year ago, and 0.3% lower than the month before. Prices in shops can also be affected by how these buying prices move.
- June7.5% higher
- July7.7% higher
- August7.6% higher
- September (preliminary)6.8% higher
Points
- Prices of goods traded between companies are 6.8% higher than a year ago
- Compared with the month before, they got 0.3% cheaper
- Prices of things bought from other countries (counted in yen) are 24.5% higher than a year ago
What the words mean
- Corporate goods price index
- A number showing how the prices of goods traded between companies are changing
- Passing costs on to customers (kakaku tenka)
- Reflecting a rise in the cost of buying supplies in the price you sell at
- Bank of Japan: Bank of Japan Corporate Goods Price Index: Release List
- Bank of Japan: Bank of Japan Corporate Goods Price Index (September 2026, preliminary)
Economic news presents published statistics and outlooks. It is not investment solicitation or trading advice. Figures are as of publication and may be revised.
This article summarizes and explains materials published by government agencies and is not advice on any individual case. Rules can change, so for actual procedures and decisions always check the latest original materials and consult professionals such as tax accountants or labor and social security attorneys. English, Simplified Chinese and Traditional Chinese versions are translations prepared from the Japanese articles for convenience. If anything differs, the Japanese text and the original source take precedence.