GDP deflator

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In economics, the GDP deflator (implicit price deflator) is a measure of the money price of all new, domestically produced, final goods and services in an economy in a year relative to the real value of them. It can be used as a measure of the value of money. GDP stands for gross domestic product, the total monetary value of all final goods and services produced within the territory of a country over a particular period of time (quarterly or annually).

Contents

Like the consumer price index (CPI), the GDP deflator is a measure of price inflation/deflation with respect to a specific base year; the GDP deflator of the base year itself is equal to 100. Unlike the CPI, the GDP deflator is not based on a fixed basket of goods and services; the "basket" for the GDP deflator is allowed to change from year to year with people's consumption and investment patterns.

Calculation

Measurement in national accounts

In most systems of national accounts the GDP deflator measures the ratio of nominal (or current-price) GDP to the real (or chain volume) measure of GDP. The formula used to calculate the deflator is:

The nominal GDP of a given year is computed using that year's prices, while the real GDP of that year is computed using the base year's prices.

The formula implies that dividing the nominal GDP by the real GDP and multiplying it by 100 will give the GDP Deflator, hence "deflating" the nominal GDP into a real measure. [1]

It is often useful to consider implicit price deflators for certain subcategories of GDP, such as computer hardware. In this case, it is useful to think of the price deflator as the ratio of the current-year price of a good to its price in some base year. The price in the base year is normalized to 100. For example, for computer hardware, we could define a "unit" to be a computer with a specific level of processing power, memory, hard drive space and so on. A price deflator of 200 means that the current-year price of this computing power is twice its base-year price - price inflation. A price deflator of 50 means that the current-year price is half the base year price - price deflation. This can lead to a situation where official statistics reflect a drop in real prices, even though they nominally have stayed the same.

Unlike some price indices (like the CPI), the GDP deflator is not based on a fixed basket of goods and services. The basket is allowed to change with people's consumption and investment patterns. [2] Specifically, for the GDP deflator, the "basket" in each year is the set of all goods that were produced domestically, weighted by the market value of the total consumption of each good. Therefore, new expenditure patterns are allowed to show up in the deflator as people respond to changing prices. The theory behind this approach is that the GDP deflator reflects up to date expenditure patterns. For instance, if the price of chicken increases relative to the price of beef, people may spend more money on beef as a substitute for chicken.

In practice, the difference between the deflator and a price index like the Consumer price index (CPI) is often relatively small. On the other hand, with governments in developed countries increasingly utilizing price indexes for everything from fiscal and monetary planning to payments to social program recipients, even small differences between inflation measures can shift budget revenues and expenses by millions or billions of dollars.

Argentina

The GDP and GDP deflator are calculated by the INDEC.

Australia

The GDP and GDP deflator are calculated by the Australian Bureau of Statistics.

Canada

The GDP and GDP deflator series are published by Statistics Canada. [3]

Hong Kong

The GDP and GDP deflator series are published by the Census and Statistics Department. [4]

India

The GDP deflator is reported by the Ministry of Statistics and Programme Implementation. It is calculated quarterly and released annually only.

Japan

The GDP and GDP deflator are calculated by the Cabinet Office.

Nepal

The GDP and GDP deflator series are published by the Central Bureau of Statistics. [5]

Pakistan

The State Bank of Pakistan reports the GDP deflator and the real GDP.

United Kingdom

The GDP and GDP deflator series are published by the Office for National Statistics. [6]

United States

The GDP and GDP deflator are calculated by the U.S. Bureau of Economic Analysis.

Türkiye

The GDP, GDP deflator and inflation are all calculated by the Turkish Statistical Institute. [7]

See also

Related Research Articles

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Gross domestic product (GDP) is a monetary measure of the market value of all the final goods and services produced in a specific time period by a country or countries. GDP is most often used by the government of a single country to measure its economic health. Due to its complex and subjective nature, this measure is often revised before being considered a reliable indicator.

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The United States Chained Consumer Price Index (C-CPI-U), also known as chain-weighted CPI or chain-linked CPI is a time series measure of price levels of consumer goods and services created by the Bureau of Labor Statistics as an alternative to the US Consumer Price Index. It is based on the idea that when prices of different goods change at different rates, consumers will adjust their purchasing patterns by purchasing more of products whose relative prices have declined and fewer of those whose relative price has increased. This reduces the cost of living reported, but has no change on the cost of living; it is simply a way of accounting for a microeconomic "substitution effect." The "fixed weight" CPI also takes such substitutions into account, but does so through a periodic adjustment of the "basket of goods" that it represents, rather than through a continuous adjustment in that basket. Application of the chained CPI to federal benefits has been controversially proposed to reduce the federal deficit.

References

  1. "Concepts and Methods of the U.S. National Income and Product Accounts" (PDF). Bureau of Economic Analysis. July 2008. Archived from the original (PDF) on 2017-11-08. Retrieved 2018-03-09.
  2. "GDP Deflator and Measuring Inflation — Politonomist". Archived from the original on 2009-01-17. Retrieved 2016-09-23.
  3. "Statistics Canada: Canada's national statistical agency / Statistique Canada : Organisme statistique national du Canada". statcan.gc.ca. Archived from the original on 22 March 2018. Retrieved 7 May 2018.
  4. "National Income - Overview | Census and Statistics Department". Archived from the original on 2013-06-04. Retrieved 2013-06-04. Census and Statistics Department: National Income
  5. "National Accounts - Central Bureau of Statistics". cbs.gov.np. Archived from the original on 30 November 2015. Retrieved 7 May 2018.
  6. "Statistics - release calendar - GOV.UK". www.statistics.gov.uk. Archived from the original on 13 February 2006. Retrieved 7 May 2018.
  7. "TÜİK - Veri Portalı". data.tuik.gov.tr. Retrieved 2023-10-06.

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