Studies in Economic Statistics N° 131: Revisiones en cuentas nacionales trimestrales Chile 2006-2019
IMACEC
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The Monthly Economic Activity Index (Imacec) is an estimate that summarizes the activity of the different branches of the economy in a given month, at prices from the previous year; its inter-annual variation constitutes an approximation of GDP evolution. The calculation of the Monthly Economic Activity Index is based on multiple supply indicators, which are weighted by the share of economic activities in the previous year’s GDP.
The Monthly Economic Activity Index is published on the first business day of each month taking into account a lag of 31 days in relation to the month being measured. In addition to this, a breakdown is published which distinguishes mining from all other activities —mining and non-mining series—, as well as the series at factor cost. All series are presented in both original and seasonally adjusted figures.
Consistent with the established publication policy, the Monthly Economic Activity Index series are revised along with the quarterly and annual national accounts.
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November 2025’s monthly index of economic activity, Imacec
According to preliminary information, in November 2025 the Imacec rose 1.2% over the same month a year before (Table 1). The deseasonalized series dropped 0.6% with respect to the previous month and rose 1.2% in twelve months. November 2025 came with the same number of working days than November 2024.
The Imacec result was explained by growth in services and trade, partly offset by lower output from mining and other goods (Figure 1). In deseasonalized terms, the fall in the Imacec was determined by services and mining (Figure 2).
The non-mining Imacec posted annual growth of 1.7%, while in deseasonalized terms it lost 0.5% compared to the previous month and rose 1.6% in twelve months.
Imacec analysis by activity
1. Goods production
Goods production fell 1.3% in annual terms, a result influenced by lower production in mining and other goods. The decline in mining was driven by lower copper extraction, while other goods saw a decrease in the added value of electric power generation. The manufacturing industry posted a variation of 0.3%, a result explained by the compensation of increased fuel refining and a decline in beverage making.
Seasonally adjusted, goods production saw a drop of 0.7% with respect to the previous month, owing mainly to mining.
2. Trade
Commercial activity increased by 5,5% in annual terms. Every component showed positive results, with growth in the automotive trade standing out, driven by vehicle sales. In retail trade, sales in department stores, specialized clothing shops and online sales platforms stood out, while wholesale trade showed greater sales of machinery & equipment.
The seasonally adjusted figures grew 0.3% with respect to the previous month, showing the contribution of automotive trade and partly offset by the contraction of wholesale trade.
3. Services
Services grew by 1.9% in annual terms, a result that was mainly explained by the performance of personal services, particularly health care. Transportation services declined.
The deseasonalized figures presented a 0.6% drop relative to the previous month, driven by entrepreneurial services and transportation.
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Related information
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