See also: List of Economic Topics

NATIONAL INCOME AND PRODUCT ACCOUNT - macroeconomics

National Income and Product Accounts (NIPA) use double entry accounting to report the monetary value and sources of output produced in a country and the distribution of incomes that production generates. Data are available at the national and industry level.

The example is from the United States but the concept is general, varying mainly in the ways different countries collect taxes. The most recent U.S. report (updated quarterly) is available in several forms, including interactive, from links on the Bureau of Economic Analysis (BEA)

The NIPA summarizes national income on the left (debit, revenue) side and national product on the right (credit, expense) side of a two-column accounting report. The bottom line on both sides of the report is labeled "Gross Domestic Product." Since the report summarizes a set of accounts generated according to accepted practices, GDP must have the same value on both sides; income and expenditure must balance. The left side is presented first for convenient screen display.

Accounting for National Income: The Left Side of the Report

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.

Table 1: The Revenue Uses of GDP

National Income and Product Accounts of the U.S.

[Billions of current US$]

Income Accounts 1 2003
Employee compensation 2 6,289.00
Proprietors' income with IVA and CCA 3 834.10
Rental income of persons with CCA 153.80
Corporate profits with IVA and CCA 4 1,021.10
Net interest and miscellaneous payments 543.00
Taxes on production and imports 798.10
Less: Subsidies 46.70
Business current transfer payments (net) 77.70
Current surplus of government enterprises 9.50
National Income (NI) 9,679.60
Statistical discrepancy 25.60
Net National Product (NNP) 9,705.20
Consumption of fixed capital 1,353.90
Gross National Product (GNP) 11,059.10
Plus: Income payments to the rest of the world 273.90
Less: Income receipts from the rest of the world 329.00
Gross domestic product (GDP) 5 11,004.00
=========

Proprieters' income is the payments to those who own non-corporate businesses, including sole proprieters and partners. Inventory Value Adjustment (IVA) and Capital Consumption Adjustment (CCA) are corrections for changes in the value of proprieter'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 inventory by definition, so there is no IVA.

Corporate profits with IVA and CCA is like the entries for proprieters' 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.

Net interest and miscellaneous payments is interest paid minus interest received plus payments to individuals and corporations that are not elsewhere classified (NEC). Taxes on production and imports includes corporate income tax payments to the states and to the federal government. 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 Gross Domestic Product. A discrepancy that small (less than three-tenths of one percent) is immaterial under accounting standards.

Gross National Product (GNP) 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, Gross Domestic Product (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 U.S. to the rest of the world that count as income where they are received.

Accounting for National Product: The Right Side of the Report

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

Table 2: Production Sources of Gross Domestic GDP

National Income and Product Accounts of the U.S.

[Billions of current US$]

Product Accounts 1 2003
Durable goods 950.70
Nondurable goods 2,200.10
Services 4,610.10
Personal consumption expenditures 7,760.90
Nonresidential 1,094.70
Residential 572.30
Change in private inventories -1.20
Gross private domestic investment 1,665.80
Exports 1,046.20
Less: Imports 1,544.30
Net exports of goods and services -498.10
Federal 752.20
State and local 1,323.30
Government consumption expenditures
and gross investment 2,075.50
Gross domestic product (GDP) 5 11,004.10
=========

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 (especially children's!), medicine, ...). Services includes 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.

The sum of the four production categories is 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.

Notes

1 On 17 Sep 2004 the U.S. Bureau of Economic Analysis National Income and Product Accounting (US BEA NIPA) web site was http://www.bea.doc.gov/bea/dn1.htm. At that time, the tables cited here were downloaded as a wk1 format spreadsheet in a zip file through a button on that page.

The BEA's table and line numbers were removed for clarity and the sums were recalculated. Copies of the downloaded BEA NIPA tables used to construct the example, including table and line numbers, are in a pdf file.

The BEA offers the NIPA tables interactively and as txt, zipped wk1, exe, csv, and pdf files. Footnotes to the BEA's tables are available in their pdf file only. The downloads include the two most recent annual values and the five most recent quarterly values for each item. The quarterly values are seasonally adjusted at annual rates; they do not add to a reported annual value.

The income side of the report is derived from BEA NIPA Tables 1.7.5 (Relation of Gross Domestic Product, Gross National Product, Net National Product, National Income, and Personal Income) and 1.12 (National Income by Type of Income).

The production side of the report is derived from BEA NIPA Table 1.1.5 (Gross Domestic Product). There is a 0.1 (US$100M or 0.00091%) rounding error from the official GDP (11,004.0) in the recalculated sum on the Product Accounts side.

2 Employee compensation includes wages and salaries plus employer payments for government insurance and pension programs.

3 IVA refers to Inventory Valuation Adjustment and CCA refers to Capital Consumption Adjustment; they are features of U.S. tax law.

4 Corporate profits reported here are before taxes. They are divided among Tax payments (234.90), Net dividends (395.30), and Undistributed profits (also known as Retained Earnings) (390.90).

5 GDP includes all goods and services produced within a country.