On October 7, 2026, Rosstat published its retrospective consumer price index estimate for the week of September 29–October 5. The weekly increase was calculated as 0.96 percent. The change was 0.90 percent from the beginning of the month and 5.94 percent from the beginning of the year. This is an estimate derived from the weekly price observations and differs from September's full monthly CPI release. Since the date range includes the last two days of September and the first five days of October, the title should not be read only as "October week". Rosstat's weekly report lists changes in the general index as well as samples of food, non-food products and services. Eggs increased 2.2 percent; Canned meat for children increased by 1.6 percent, canned vegetables by 1.3 percent, and buckwheat by 1.0 percent.

Fruit and vegetable prices decreased by 0.6 percent on average. These movements belong to the weekly evaluation period. It cannot be interpreted as monthly or annual product inflation. Increases and decreases can occur together in different products. The report reports large weekly jumps in some regulated residential and utility tariffs: sewer was up 17.1 percent, cold water was up 15.3 percent, hot water was up 14.2 percent, heating was up 12.7 percent and electricity was up 12 percent. These product and service rates are changes within the scope of weekly registration. The source's data is not used here for regional disaggregation. The news focuses on national coverage.

Since the source does not explain the reason for these increases or future tariffs, the explanation is limited to measured price movements. On the fuel side, while gasoline increased by 0.3 percent, diesel decreased by 0.1 percent. This result shows product-based differences in the week when increases in some regulated public tariffs were strong. It would not be correct to present gasoline and diesel movements as a single indicator that represents all energy costs. The weights, observation method and product definitions in the consumer price index basket determine how the total index is formed. The summary bulletin does not provide all household bills separately. Rosstat labels the weekly change as an estimate of prices already recorded during the reporting week.

This qualification is important: the 0.96 percent value of the weekly bulletin should not be presented as the final monthly index for the full month. The official statistics agency also published the September CPI separately on October 9. The two data are not interchangeable. The reporting window and calculation they cover are different. In the metrics here, since the weekly observation interval ends on October 5, the period is recorded as 2026-10-05.