2020 as base year with CPI of 100 points; contribution to the year-on-year change compared to the previous year
Supplementary notes
*Including personal care services, toilet articles, personal effects, tobacco, among others.
The Consumer Price Index is compiled monthly to measure changes in various goods and services purchased by households all over Japan to analyze the movement of prices in time series. It is collected based on retail prices of each municipality and item obtained from the Retail Price Survey, using the Laspeyres-type formula.
Citation formats
Categories that contributed most to inflation Japan 2025
In 2025, food items were the category that contributed most to the year-on-year change of the Consumer Price Index (CPI) of all items in Japan, with a contribution of ****. Transportation and communication followed with a contribution of ****. The total contribution of all items is equal to the rate of change of the CPI, which was *** percent in 2025. The CPI of all items rose to  index points.
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Statistics Bureau of Japan. (January 23, 2026). Contribution to annual development of Consumer Price Index (CPI) of all items in Japan in 2025, by category [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 31, 2026, from /statistics/1415705/japan-contribution-annual-change-consumer-price-index-by-category/
Statistics Bureau of Japan. "Contribution to annual development of Consumer Price Index (CPI) of all items in Japan in 2025, by category." Chart. January 23, 2026. ÌÇÐÄÆƽâ°æ. Accessed July 31, 2026. /statistics/1415705/japan-contribution-annual-change-consumer-price-index-by-category/
Statistics Bureau of Japan. (2026). Contribution to annual development of Consumer Price Index (CPI) of all items in Japan in 2025, by category. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 31, 2026. /statistics/1415705/japan-contribution-annual-change-consumer-price-index-by-category/
Statistics Bureau of Japan. "Contribution to Annual Development of Consumer Price Index (Cpi) of All Items in Japan in 2025, by Category." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 23 Jan 2026, /statistics/1415705/japan-contribution-annual-change-consumer-price-index-by-category/
Statistics Bureau of Japan, Contribution to annual development of Consumer Price Index (CPI) of all items in Japan in 2025, by category ÌÇÐÄÆƽâ°æ, /statistics/1415705/japan-contribution-annual-change-consumer-price-index-by-category/ (last visited July 31, 2026)
Contribution to annual development of Consumer Price Index (CPI) of all items in Japan in 2025, by category [Graph], Statistics Bureau of Japan, January 23, 2026. [Online]. Available: /statistics/1415705/japan-contribution-annual-change-consumer-price-index-by-category/
