National Income and Product Accounts

The national income and product accounts (NIPA) are part of the national accounts of the United States. They are produced by the Bureau of Economic Analysis of the Department of Commerce. They are one of the main sources of data on general economic activity in the United States.

They use double-entry accounting to report the monetary value and sources of output produced in the country and the distribution of incomes that production generates. Data are available at the national and industry levels.

Seven summary accounts are published, as well as a much larger number of more specific accounts. The first summary account shows the gross domestic product (GDP) and its major components. The table summarizes national income on the left (debit, revenue) side and national product on the right (credit, expense) side of a two-column accounting report. Thus the left side gives GDP by the income method, and the right side gives GDP by the expenditure method. The GDP is given on the bottom line of both sides of the report. GDP must have the same value on both sides of the account. This is because income and expenditure are defined in a way that forces them to be equal (see accounting identity). We show the 2003 table later in this article; we present the left side first for a convenient screen display.

The U.S. report (updated quarterly) is available in several forms, including interactive, from links on the Bureau of Economic Analysis (BEA) NIPA ([1]) page. Other countries report based on their own adopted system of National accounts which are frequently based on the U.S. NIPAs, the widely adopted United Nations System of National Accounts, or their own custom approach. The level of detail (granularity) accounted for internally, and reported publicly, varies widely across countries. Likewise, a nation's system of accounts, (analogous to a firm's Chart of accounts) are typically gradually revised and updated on their own individual schedule. The U.S. NIPAs are prepared by the staff of the Directorate for National Economic Accounts within the BEA. The source data largely originates from public sources, such as government surveys and administrative data, and they are supplemented by data from private sources, such as data from trade associations (BEA 2008: 1–6).

Income accounting

The income side of the national income and product account report begins with the kinds of income people might have. Employee compensation includes the wages and salaries paid to anyone whose income is subject to income tax withholding. Since wages and salaries affect more individuals and families directly than the other sources of income, it has by far the largest value.

Proprietors' income is the payments to those who own non-corporate businesses, including sole proprietors and partners. inventory value adjustment (IVA) and capital consumption adjustment (CCA) are corrections for changes in the value of the proprietor's inventory (goods that may be sold within one year) and capital (goods like machines and buildings that are not expected to be sold within one year) under rules set by the U.S. Internal Revenue Service (IRS).

Rental income of persons excludes rent paid to corporate real estate companies. Real estate is capital rather than an inventory by definition, so there is no IVA.

Corporate profits with IVA and CCA are like the entries for proprietors' income and rental income except that the organization is a corporation. Corporate profit is shown before taxes, which are part of taxes on production and imports, two lines down.

Business current transfer payments are not explained here.

Net interest and miscellaneous payments are interest paid minus interest received plus payments to individuals and corporations that are not elsewhere classified (NEC). Taxes on production and imports does not include corporate income tax payments to the states and to the federal government. Taxes on production and imports were previously classified as "indirect business taxes" and included excise taxes, sales taxes, property taxes, and other taxes relating to business production. While the report includes the net value of interest payments and receipts, both the taxes paid and subsidies from the government are shown.

National income (NI) is the sum of employees, proprietors, rental, corporate, interest, and government income less the subsidies government pays to any of those groups.

Net national product (NNP) is National Income plus or minus the statistical discrepancy that accumulates when aggregating data from millions of individual reports. In this case, the statistical discrepancy is US$25.6 billion, or about 0.23% of the gross domestic product. A discrepancy that small (less than three-tenths of one percent) is immaterial under accounting standards.

Gross national product is net national product plus an allowance for the consumption of fixed capital, mostly buildings and machines, usually called depreciation. Capital is used up in production but it does not vanish.

Finally, GDP is gross national product plus payments from the rest of the world that are income to residents of the U.S. minus payments from the US to the rest of the world that count as income where they are received.

Production accounting

Macroeconomics defines GDP, from the production perspective, as the sum of personal consumption, investment, net exports, and government expenditures; GDP = C + I + (X − M) + G.

The production side report also begins with individuals and families, in this case, their personal consumption expenditures on goods and services, C in the definition. Durable goods are expected to last more than a year (furniture, appliances, cars, etc.) and to have little or no secondary resale market. Nondurable goods are used up within a year (food, clothing, medicine ...). Services include everything else, everything we buy that has little or no physical presence, like banking, health care, insurance, movie tickets, and so on.

Gross private domestic investment includes expenditures on goods that are expected to be used for an extended period of time, I in the definition. Residential investment includes owner-occupied and rental housing. Nonresidential investment includes buildings, machinery, and equipment used for commercial or industrial purposes (small business, agriculture, manufacturing, service, etc.). The last element of Investment accounts for any change in the value of previous investments that are still in use, called inventory.

Net Exports reports the balance between goods produced domestically but consumed abroad (X) and goods produced abroad but consumed domestically (M). There is no distinction between consumption and investment or between the private and public sectors; a consumer's imported television, a corporation's imported lab equipment, and the government's use of imported food on military bases count equally. When net exports are positive, the country has a trade surplus. When Net Exports are negative, there is a trade deficit.

Government Consumption Expenditures and Gross Investment includes all government expenditures on domestically produced goods and services. Like an individual or family, the government consumes food, clothing, furniture, and other goods and services in its administrative, military, correctional, and other programs. Governments also invest in buildings for program use and in improvements to harbors, rivers, roads, and airports. Transfer payments, like subsidies to the unemployed or the retired, are not included in this item since they are simply a movement of money from the government to citizens, rather than a purchase of goods or services.

The sum of the four production categories is a gross domestic product, the value of all domestic expenditures on goods and services. GDP (income) must equal GDP (production) except for any rounding error that accumulates when the data used to prepare a table includes rounding at prior stages of analysis, as appears to have happened in this case.

See also

• Aggregation problem
• Classification of Individual Consumption by Purpose
• Macroeconomics
• Measures of national income and output
• National accounts
• United Nations System of National Accounts

Notes

References

• J. Steven Landefeld, Eugene P. Seskin, and Barbara M. Fraumeni. 2008. "Taking the Pulse of the Economy: Measuring GDP". Journal of Economic Perspectives, 22(2), pp. 193–216. PDF link (press +).
• Ott, Mack (2008). "National Income Accounts". in David R. Henderson. Concise Encyclopedia of Economics (2nd ed.). Indianapolis: Library of Economics and Liberty. ISBN 978-0865976658. OCLC 237794267. http://www.econlib.org/library/Enc/NationalIncomeAccounts.html. 

External links

• Google – public data: GDP and Personal Income of the U.S. (annual): Taxes on Production and Imports
• Google – public data: GDP and Personal Income of the U.S. (annual): Taxes on Production and Imports less Subsidies
• National income and product accounts publications available on FRASER
• The Nigerian Bureau of Economic Analysis,'A Guide to the National Income and Product Accounts of N Very helpful in understanding the accounts; also contains historical information and is an important source of information for this article.
• United States, Bureau of Economic Analysis, 2008, Concepts and Methods of the National Product Accounts of the United States, More detailed than the Guide, above.

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