Core Inflation: What it is and Why it Matters?

Understanding core Inflation

Understanding Core Inflation: What it is and Why it Matters

Core inflation is an important economic concept that can impact various aspects of our daily lives. In this article, we will delve into the definition of core inflation, its importance, and how it can affect the economy.


Core inflation is the rate of inflation that excludes volatile and temporary items such as food and energy prices. This measure provides a better gauge of underlying inflationary pressures, which is vital for policymakers to make informed decisions about monetary policy.


Core inflation helps policymakers to set interest rates, adjust fiscal policy, and manage the economy. A stable and reliable measure of inflation trends allows for more effective decision-making, which in turn promotes economic stability and growth.

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Factors that Affect Core Inflation

Factors that can impact core inflation include changes in labor costs, commodity prices, and productivity. For example, a sudden increase in the price of oil can lead to higher energy costs, which can indirectly affect the cost of goods and services across the economy.

Several factors can influence core inflation, which measures changes in prices excluding volatile components like food and energy.

Here are some key factors and examples of how they can impact core inflation:
  1. Demand-Pull Inflation: Strong consumer demand can drive up prices and lead to inflationary pressures. For example, if there is high demand for housing, rental prices may increase, contributing to core inflation. The formula for demand-pull inflation is:Demand-Pull Inflation = (Change in Aggregate Demand / Initial Aggregate Demand) * 100
  2. Cost-Push Inflation: When production costs increase, businesses may pass those costs onto consumers, leading to inflation. For instance, if there is a rise in raw material prices, it can result in higher prices for finished goods. The formula for cost-push inflation is:Cost-Push Inflation = (Change in Production Costs / Initial Production Costs) * 100
  3. Exchange Rates: Fluctuations in exchange rates can impact import and export prices, affecting core inflation. If a country’s currency depreciates, it can lead to higher import prices and potentially higher core inflation. Conversely, currency appreciation can reduce import prices and dampen inflationary pressures.
  4. Government Policies: Changes in fiscal and monetary policies can influence core inflation. For example, expansionary monetary policy, such as lowering interest rates or increasing money supply, can stimulate economic activity and potentially lead to inflation. On the other hand, contractionary policies can help curb inflationary pressures.
  5. Supply Shocks: Disruptions in supply chains or changes in production capacity can affect core inflation. For instance, natural disasters, political instability, or disruptions in key industries can lead to supply shortages, driving up prices.
  6. Wage Growth: Increases in wages can contribute to core inflation as businesses pass on higher labor costs to consumers. If wages rise faster than productivity, it can result in inflationary pressures. The formula for wage growth is:Wage Growth = (Change in Wages / Initial Wages) * 100
  7. Global Factors: Global events, such as changes in oil prices or international trade policies, can impact core inflation. For example, if oil prices rise, it can increase production costs and lead to higher inflation across various sectors.

It’s important to note that the impact of these factors on core inflation can vary based on specific economic conditions, country-specific factors, and the interaction between different variables. Therefore, analyzing and monitoring these factors alongside core inflation data is essential for policymakers, central banks, and businesses to make informed decisions and manage inflationary pressures effectively.


The core Consumer Price Index (CPI) and core Personal Consumption Expenditures (PCE) index are two common measures of core inflation. In the United States, core CPI increased by 4.3% in 2021, while core PCE rose by 3.4%.


Core inflation is not a perfect measure as it can still be influenced by other factors such as changes in import prices or shifts in consumer behavior. Moreover, even though food and energy prices are excluded from the calculation, they still have a significant impact on consumers’ overall cost of living.

Conclusion of understanding core inflation

Core inflation is a critical economic concept that helps policymakers make informed decisions about monetary policy. By understanding the definition, importance, and factors that affect core inflation, we can better comprehend how it can impact the economy and our daily lives.

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Calculation of Core Inflation

The calculation of core inflation can vary by country and by the specific index being used. However, the general principle is to exclude the prices of goods and services that are considered volatile or temporary. In the United States, for example, the Bureau of Labor Statistics calculates the core CPI by excluding food and energy prices from the overall CPI. The Federal Reserve, on the other hand, uses the core PCE index, which excludes food and energy prices as well as certain other items.

The formula for calculating core inflation is:

Core Inflation Rate = (Price Index excluding Food and Energy) / (Price Index including Food and Energy) * 100

Here’s an example to illustrate the calculation:

Let’s assume we have a price index that includes food and energy, and another price index that excludes them. The price index including food and energy is 150, while the price index excluding food and energy is 130.

Using the formula, we can calculate the core inflation rate as follows:

Core Inflation Rate = (130 / 150) * 100 = 86.67%

In this example, the core inflation rate is approximately 86.67%.

By excluding the prices of food and energy, which tend to be more volatile and subject to temporary factors, the core inflation rate provides a more stable measure of underlying inflationary pressures in an economy. It helps policymakers and economists gauge long-term inflation trends and make informed decisions regarding monetary policy and economic stability.

Importance of Understanding Core Inflation

Understanding core inflation is important not only for economists and policymakers but also for consumers and businesses. Inflation can impact everything from the prices of groceries and household goods to the cost of borrowing money and investing in the stock market. By staying informed about core inflation trends, individuals and businesses can make better financial decisions and plan for the future more effectively.

Some examples

Here are some examples of core inflation with figures:

The U.S.

In the United States, the core Consumer Price Index (CPI) increased by 4.3% in 2021. This means that if we exclude the prices of food and energy, the cost of other goods and services increased by 4.3% on average over the year. In contrast, the overall CPI, which includes food and energy prices, increased by 6.2% in the same period.
The core Personal Consumption Expenditures (PCE) index in the United States rose by 3.4% in 2021. This measure excludes not only food and energy prices but also certain other items. The overall PCE index, which includes all items, increased by 5.7% in the same period.

Euro area

In the Euro area, the core inflation rate in March 2023 was 1.3%. This measure excludes energy, food, alcohol, and tobacco. In contrast, the overall inflation rate, which includes all items, was 2.6%.
In Canada, the core inflation rate in February 2023 was 2.0%, while the overall inflation rate was 4.2%. This means that if we exclude the prices of food and energy, the cost of other goods and services increased by 2.0% on average over the year.
These figures show that core inflation rates can differ significantly from overall inflation rates. By excluding volatile items such as food and energy, core inflation provides a more accurate measure of underlying inflationary pressures in the economy. This is essential for policymakers to make informed decisions about monetary policy, such as adjusting interest rates, to promote economic stability and growth.

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Challenges with Measuring Core Inflation

While core inflation is a useful tool, it has some limitations. For example, the exclusion of certain goods and services from the calculation of core inflation can make it less representative of consumers’ actual experience. Additionally, core inflation can still be influenced by factors such as changes in import prices, which can affect the prices of goods and services across the economy.

Core Inflation and Wage Growth

It can impact wage growth, which is the increase in wages over time. If core inflation is higher than wage growth, then real wages (wages adjusted for inflation) will decrease, making it harder for consumers to afford goods and services. On the other hand, if wage growth is higher than core inflation, then real wages will increase, which can lead to increased consumer spending and economic growth.

Regional Differences in Core Inflation

Their rates can vary significantly by region, even within the same country. For example, in the United States, core inflation rates in the Northeast region can be different from those in the Midwest or West regions. This can reflect differences in the cost of living, population density, and other factors.

Core Inflation and Central Bank Communication

Central banks use communication to influence expectations about inflation and monetary policy. By signaling their commitment to maintaining low and stable core inflation, central banks can help anchor inflation expectations and prevent them from spiraling out of control. This can help reduce the likelihood of harmful economic shocks, such as recessions or high unemployment.

Core Inflation and Asset Prices

Core inflation can impact asset prices, such as stocks and bonds. If core inflation is high, then investors may demand higher returns to compensate for the increased inflation risk. This can lead to lower stock prices and higher bond yields. Conversely, if core inflation is low, then investors may be willing to accept lower returns, which can lead to higher stock prices and lower bond yields.

Core Inflation and Policy Trade-Offs

Monetary policy decisions can involve trade-offs between different policy goals, such as low inflation, low unemployment, and financial stability. Core inflation can help policymakers understand these trade-offs and make informed decisions. For example, if core inflation is low but unemployment is high, policymakers may need to prioritize policies that promote job creation over policies that maintain low inflation.

Sources: Trading Economics, WallStreetMojo

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