JAKARTA - The Central Statistics Agency (BPS) recorded that in January 2026 there was deflation of 0.15 percent on a monthly basis (month to month/mtm), this decline is reflected in the Consumer Price Index (CPI) which fell from 109.92 in December 2025 to 109.75 in January 2026.

BPS Distribution and Services Statistics Deputy Ateng Hartono explained that the calculation of the January 2026 calendar inflation compared to December 2025 is the same as the monthly inflation because it uses the same index base.

"In the calendar year of January 2026, compared to December 2025 will be the same because the comparison is the same, namely the CPI in January compared to December. The largest monthly inflation contributor expenditure group is food, beverages and tobacco with a deflation contributor of 1.03 percent and provides a deflation contribution of 0.30 percent," he said in a press conference, Monday, February 2.

The dominant commodity that drives deflation is in the food, beverage, and tobacco group, especially triggered by the decline in the price of a number of commodities.

Meanwhile, red chili peppers contributed the largest share of deflation of 0.16 percent, followed by sweet peas at 0.08 percent, red onions at 0.07 percent, broiler chicken at 0.05 percent, and broiler chicken eggs at 0.03 percent.

In addition, gasoline and air transportation tariffs also contributed to deflation, each with a contribution of 0.03 percent.

On the other hand, several commodities still provide inflationary pressure in January 2026, including gold jewelry with a contribution of 0.16 percent, fresh fish 0.06 percent, and tomatoes 0.02 percent.

In terms of components, BPS noted that the core component experienced inflation, while the government-regulated price component and the volatile component actually experienced deflation.

January 2026 deflation which reached 0.15 percent was mainly due to a decrease in prices on volatile components.

Ateng said that the volatile price component experienced deflation of 1.96 percent and contributed the largest deflation of 0.33 percent.

The main commodities that contributed to deflation in this component include red chili, sweet peas, onions, broiler chicken meat, and broiler chicken eggs.

Meanwhile, the government-regulated price components experienced deflation of 0.32 percent with a contribution of 0.06 percent.

The dominant commodities that contribute to the deflation in the price component are regulated by the government, namely gasoline, air transportation tariffs, and intercity transportation tariffs.

"Meanwhile, the core component experienced inflation of 0.37 percent, well this component contributed 0.24 percent of inflation. The dominant commodities that contributed to inflation in the core component are gold jewelry, house rent, motorcycles and rice with lauk," he said.

In terms of annual (year on year/yoy), inflation in January 2026 was recorded at 3.55 percent compared to January 2025 or an increase in the price index from 105.99 to 109.75.

Based on the expenditure group, annual inflation was mainly driven by the housing, water, electricity, and household fuel group, which experienced high inflation of 11.93 percent, with a contribution of 1.73 percent.

Ateng added that electricity tariffs are the commodity with the largest contribution to inflation in the group.

"The commodities with the largest contribution to inflation in housing, water, electricity and household fuels are electricity tariffs. Other commodities outside the group that also provide a dominant contribution, especially gold jewelry," he said.


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