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Gross domestic product, or GDP, is the broadest standard measure of economic production in the United States. The Bureau of Economic Analysis defines GDP as the value of final goods and services produced within the country during a period.
The expenditure formula
One way BEA measures GDP is by adding four major components:
GDP = consumer spending + private investment + government consumption and investment + exports − imports.
Consumer spending
Personal consumption expenditures include household purchases of goods and services. This is typically the largest component of U.S. GDP.
Private investment
Investment includes business spending on structures, equipment, intellectual property, residential construction, and changes in private inventories.
Government consumption and investment
Government purchases of goods and services and public investment count in GDP. Transfer payments such as Social Security are not counted as government production merely because the government sends the payment; the eventual household spending may appear in consumption.
Net exports
Exports are added because they are produced domestically. Imports are subtracted because they were produced abroad but may already appear inside consumption, investment, or government spending.
Why only final goods and services count
GDP avoids double counting intermediate inputs. If a bakery buys flour and sells bread, GDP is designed to count the value of the final bread rather than adding the full value of both the flour and bread as separate final output.
Nominal vs. real GDP
Nominal GDP values production at current prices. Real GDP adjusts for price changes so economists can better distinguish changes in quantities from inflation.
When headlines say “the economy grew,” they usually refer to growth in real GDP.
Why quarterly GDP is annualized
BEA often reports quarterly real GDP growth at an annual rate. That answers a hypothetical question: if the quarter-to-quarter pace continued for a full year, what would the annualized rate be? It is not the same as saying the economy literally grew by that percentage during three months.
GDP gets revised
BEA updates GDP as more complete source data arrive and during annual comprehensive revisions. A first estimate is therefore not the final historical number. EconomicHQ dates GDP figures to their release and revision status when using them.
What GDP does not measure well
- How income or wealth is distributed.
- Unpaid household labor.
- Whether growth is environmentally sustainable.
- Household financial stress.
- Quality-of-life factors that do not have market prices.
GDP can rise while some households lose purchasing power, and GDP can fall even while some industries expand. That is why it should be read alongside inflation, employment, wages, income, and household-finance data.
GDP per capita
Dividing GDP by population creates GDP per capita, which can be useful for broad comparisons. But an average still does not show the distribution of income or living standards across households.
Continue learning
Visit the Economy & Inflation hub and the Economic Data Center for BEA releases and related explainers.
Sources & methodology
EconomicHQ standard
Sources, dates, and methodology matter.
EconomicHQ prioritizes primary sources for consequential financial and economic claims and identifies reporting periods for changing information. This article is educational and does not provide individualized financial, investment, tax, legal, or credit advice.