Core CPI
Core Consumer Price Index (CPI) is a statistical measure of changes in the prices of goods and services typically purchased by households. It is used to assess inflation and the overall cost of living in a given region and over time. The measure is also used as a tool by investors and policymakers to gauge the purchasing power of a population, evaluate the performance of the national economy, and inform monetary policy decisions.
Core CPI is a modified or blended version of the traditional CPI and excludes certain volatile items such as food and energy prices. Traditional CPI measures the changes in the prices of a detailed basket of goods and services that are commonly purchased by households. In contrast, core CPI is a measure of the prices of a fixed basket of goods and services, excluding specific items that can be highly volatile and distort the overall picture of price trends in the economy. Core CPI is often seen as a purer measure of underlying inflation and is less influenced by price movements due to temporary shocks.
Core CPI is released along with traditional CPI figures and both metrics serve different purposes. While traditional CPI measures overall inflation and the costs associated with living in an economy, core CPI is an important measure that simply strips out the volatile items from the broader basket of goods and services. Thus, core CPI can be seen as an indicator of the underlying inflationary trend in an economy and a better gauge of actual price movements.
Core CPI is monitored closely by both central banks and investors. Central banks use core CPI as one of the key metrics when making monetary policy decisions, such as adjusting interest rates. Investors use core CPI to identify inflationary trends and make informed investment decisions.
In the US, the core CPI is based on the Consumer Price Index, which is published monthly by the Bureau of Labor Statistics. The index is calculated by comparing the prices of a sample basket of items relevant to consumers’ day-to-day expenditures. Core CPI excludes food, beverages, fuel, electrical energy and services, such as housing, transport and health care services that are deemed to be too volatile to accurately measure underlying inflation.
In conclusion, core CPI is an important measure of underlying inflation and is a key indicator for central banks and investors. It is calculated by stripping out volatile items from the Consumer Price Index and is used to assess the cost of living in an economy and to inform key decisions on monetary policy and investments.