BARMM Consumer Price Index in September 2021
Consumer Price Index
The Consumer Price Index (CPI) is an indicator of the changes in the average retail prices of fixed basket of goods and services commonly purchased by households relative to a base year. BARMM recorded a CPI of 133.7 in September 2021. The region’s CPI is the third highest in the entire country during this period.
Figure 2 shows that commodity groups of (1)Alcoholic Beverages and Tobacco, (2)Food and Non-Alcoholic Beverages, and (3)Restaurant and Miscellaneous Goods and Services have the highest corresponding CPIs of 187.9, 139.3 and 134.8 in September 2021. On the other hand, (1)Communication and (2)Transport have the lowest CPIs of 103.2 and 112.1, respectively.
The Province of Sulu recorded the highest CPI in the region in September 2021 at 142.2, as shown in Figure 3. This was followed by Basilan and Cotabato City with CPIs of 133.7 and 134.0, respectively. Tawi-Tawi has the lowest CPIs among the provinces with 128.6.
Figure 4 shows that the inflation rate of BARMM remained to 2.5 percent in September 2021 from 2.5 percent inflation rate in August 2021. This implies that the average retail prices of goods and services in the market basket in BARMM increased by 2.5 percent in September 2021 compared to the prices in September 2020.
Commodity groups of (1)Alcoholic Beverages and Tobacco, (2)Transport and (3)Housing, Water, Electricity, Gas and Other Fuels have the highest inflation rates in September 2021 recorded at 5.7 percent, 4.6 percent, and 3.9 percent, respectively. On the other hand, commodity groups of (1)Communication and (2)Education both have the lowest corresponding inflation rates of 0.4 percent. (see Figure 5).
It is shown in Figure 6 that Cotabato City has the highest inflation rate which is 4.4 percent in September 2021. This is followed by Basilan with 4.2 percent. On the other hand, Tawi-Tawi has a deflation rate of 0.5 percent in the said month.
Purchasing Power of Peso
Purchasing Power of Peso (PPP) is inversely related to inflation rate. Thus, as the inflation rate increases, PPP declines, as shown in Figure 7. In BARMM, PPP is at 0.75 as of September 2021. This is 2.6 percent lower than the PPP in September 2020.
Consumer Price Index (CPI)
The CPI is an indicator of the changes in the average retail prices of a fixed basket of goods and services commonly purchased by households relative to a base year.
Uses of CPI
The CPI is most widely used in the calculation of the inflation rate and purchasing power of peso. It is a major statistical series used for economic analysis and as a monitoring indicator of government economic policy.
Computation of CPI
The computation of the CPI involves consideration of the following important points:
a. Base Period
The reference date or base period is the benchmark or reference date or period at which the index is taken as equal to 100.
b. Market Basket
A sample of the thousands of varieties of goods purchased for consumption and services availed by the households in the country selected to represent the composite price behavior of all goods and services purchased by consumers.
c. Weighting System
The weighting pattern uses the expenditures on various consumer items purchased by households as a proportion to total expenditure.
The formula used in computing the CPI is the weighted arithmetic mean of price relatives, the Laspeyre’s formula with a fixed base year period (2006) weights.
e. Geographic Coverage
CPI values are computed at the national, regional, and provincial levels, and for selected cities.
Inflation Rate is the rate of change of the CPI expressed in percent. Inflation is interpreted in terms of declining purchasing power of peso
Headline Inflation refers to the rate of change in the CPI, a measure of the average standard “basket” of goods and services consumed by a typical family.
Purchasing Power of Peso shows how much the peso in the base period is worth in the current period. It is computed as the reciprocal of the CPI for the period under review multiplied by 100
Note: The dataset used in the special release is exclusive for ARMM plus Cotabato City.