Methodologies
This page provides links to the methodologies used to prepare BEA's National, Industry, Regional, and International accounts data.
Note: These methodologies are periodically refined to incorporate new and better source data and improved estimating procedures. The refinements are described in articles in BEA's monthly Survey of Current Business (SCB) that present annual or comprehensive revisions to the estimates.
National
NIPA Handbook: Concepts and Methods of the U.S. National Income and Product Accounts
Measuring the Economy: A Primer on GDP and the National Income and Product Accounts
Updated Summary NIPA Methodologies
Gross Domestic Product and Gross Domestic Income: Revisions and Source Data
This article analyzes the source data used to prepare the GDP estimates and the GDI estimates according to a set of criteria that reflects the quality, the availability, and the use of the data. This analysis allows for a better understanding of the differences between the source data that underlie the GDP estimates and those that underlie the GDI estimates and illustrates how the incorporation of the increasingly detailed and comprehensive source data leads to revisions to the GDP estimates and to the GDI estimates.
Taking the Pulse of the Economy: Measuring GDP
A Primer on BEA's Government Accounts
MP-1: An Introduction to the National Income and Product Accounts
Housing Services in the National Economic Accounts
Chained-Dollar Indexes: Issues, Tips on Their Use, and Upcoming Changes
This article discusses the advantages of chain-weighted indexes and the challenges posed by chained dollars, outlines further steps that BEA will be taking to address these issues in the 2003 comprehensive revision of the national income and product accounts (NIPAs), and provides suggestions for using chained dollars in ways that reduce biases and errors in forecasting and other applications where components need to be aggregated. Highlights of this article include the following:
Fixed Assets and Consumer Durable Goods in the United States, 1925-97
A Note on the Impact of Hedonics and Computers on Real GDP
Preview: BEA's New Featured Measures of Output and Prices
One major improvement in the upcoming NIPA revision will be the introduction of new featured measures of real output and prices. These measures, which will be chain-type indexes, will provide a more accurate picture of economic activity by allowing for changes in relative prices and in the composition of output over time. To facilitate sectoral trend and current-period analysis, BEA will expand the presentations of its estimates to include the contributions of major components to the growth in real GDP and dollar-denominated series that are calculated from the featured output indexes.
Alternative Measures of Change in Real Output and Prices, Quarterly Estimates of 1959-92
This article presents quarterly estimates of the alternative measures of change in real output and prices that BEA introduced in April 1992.l It also updates the annual estimates for 1988-90 to incorporate the results of the annual revision of the national income and product accounts (NIPA's) in July 1992 and extends the annual estimates to 1991.2 The alternative measures, which supplement BEA's featured fixed-weighted measures, are especially useful for studies of long-term economic growth, for comparisons of business cycles, and for gauging the effect of changes in the economy's relative
Alternative Measures of Change in Real Output and Prices
This article and the one that follows it, "Economic Theory and BEA 's Alternative Quantity and Price Indexes," present results of BEA's work on alternative measures of production and prices. These measures, which are designed to supplement BEA's featured fixed weighted measures, were first described in "Alternative Measures of Real GNP" in the April 1989 Survey of Current Business; in that article, BEA stated that it would develop the alternative measures as part of the next comprehensive revision of the national income and product accounts.