The Consumer Price Index (CPI) measures the changes in the price level of goods and services that most people buy for their day-to-day consumption. It is most widely used in the calculation of the inflation rate and purchasing power of the peso.

Inflation in the region for September 2021 was measured at 5.8 percent, which is lower compared to its previous month record at 6.0 percent. In contrast, this is 3.2 percent index points higher than the recorded inflation rate in the same month of 2020 at 2.6 percent. Despite the deceleration, inflation rate in September 2021 is still way above the inflation rate of the whole year 2020 at 2.8.