National Income Accounts

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National Income Accounts










The national income accounts are an internally-consistent matrix of statistics on a national economys income, consumption, production, foreign trade and asset accumulation. National income accounts have two central roles: the measurement of economic activity and the measurement of economic well-being, or progress. In an important sense, these two roles are one, as economic activity derives its rationale from its social benefit.

According to British economist A. C. Pigou (18771959), whose work set forth the basic framework for welfare analysis in economics, national income is a measure of the part of social welfare that can be brought directly or indirectly into relation with a money measure (1932, p. 31). Pigous definition is limited to those elements of welfare that can be measured by money, but it does not draw a fixed line between what can and cannot be measured. In practice, that boundary has evolved over time.

The limited but highly practical achievement of this measurement task has been one of the great accomplishments of economics, and supports the claim that economics is an empirical science. A nations national income accounts have grown to include analytical detail on consumption, production, income, and foreign trade, as well as integrated statistics on saving and investment and their relation to stocks of physical capital and financial assets and liabilities. These statistics are central to economic and political evaluation and planning throughout the world.

The British economist Richard Stone (19131991) received the 1984 Nobel Prize in Economics for establishing the framework for the United Nations System of National Accounts (SNA), which is the international standard for national income accounting. Its principles are subscribed to by virtually all nations. Indeed, almost all countries now prepare national income accounts; more than two hundred countries have accounts published in the United Nations national accounts statistics.

Why are national income accounts so important to economies and to governments? First, they provide an excellent approximation of a nations available economic resources and actual output. This is invaluable for setting government fiscal and monetary policy, and for evaluating the impact of governmental policies. Second, national income accounts provide a precise understanding of the current state of national economic demand, supply, and inflation. This creates a sound basis for current business and financial decisionmaking. Third, the national income framework has proved to be a useful basis for long-term forecasting of economic activity for business and government planning at multiyear horizons. Finally, the statistics are used for international and interregional cost sharing and aid agreements.

National income accounts can only fulfill these roles because they have been widely accepted as good measures of economic activity and well-being. They are not now and are unlikely ever to be ideal measures of either. Economists and national income accountants persistently attempt to widen and sharpen national income measurement, including creating satellite accounts (statistics provided by national income accountants but not included in the official accounts) that provide data on additional items not yet of high enough quality or on the same theoretical footing as those already measured.


In accepting the measuring rod of money, we accept limitations on our welfare measure both in concept and in scope. The measure is largely plutocratic, as wealthy households command more consumption than poor ones. As such, it is a measure that is comfortable with the existing structures of economic power. As the American economist and 1971 Nobel laureate Simon Kuznets (19011985) stressed, changes in income distribution across households should be a crucial component of the evaluation of national income, but as of 2006 income distribution was not included in national income accounts.

Monetized activity sets the general boundary for national income measurement. Household production the use of household time and energy in tasks such as studying, cooking, and cleaningis generally not included in consumption because it is unpriced. One exception is that owner-occupied housing is treated as if the household were renting from itself; otherwise the shift from tenancy to owner-occupation in many countries would appear as a decline in consumption of shelter services. Another exception, important in many countries, is owner-consumption of farm products.

Production has two objects: consumption and accumulation. This entry will turn first to consumption expenditures, which form the core of measured welfare benefits.

Consumption Comparisons Over Time As prices and money, or nominal expenditures, change, is it possible to quantify the degree to which consumers are better off in one period compared to another? Within limits, yes. In two periods, the consumer buys two different baskets of goods and services. Now suppose the items bought in the first period could have been purchased in the second period for less than the items actually purchased in the second period. Then we can argue that the consumer must be better off, for the alternative was freely chosen. If the second-period consumer pays 2 percent more than the first-period basket would have cost, real consumption expenditures are said to have risen by (at least) 2 percent. While this does not amount to 2 percent more happiness, it does imply that the consumer could have remained as well off using 2 percent less of the products and thus 2 percent less work and capital (assuming constant returns to scale), so it is a meaningful quantification.

So one measure of price increase, or the inflation rate, between two periods can be constructed by pricing out the first periods basket in both periods. This price index, called a Laspeyres price index, gives, if anything, an overestimate of the rate of inflation. We can go the other way around. A price index constructed by pricing out the second basket in both periods, called a Paasche price index, creates an underestimate of inflation.

Before the 1980s, which of the two methods was used did not make a great deal of difference. However, very rapid declines in the prices of computers and other electronics caused large gaps between the two methods. The solution was to construct Fisher ideal indexes averaging the two inflation rates over each pair of consecutive quarters (precisely, the two price index ratios are multiplied and the square root is taken).

Subtracting the inflation rate from the nominal growth rate, a process called deflation, gives the real growth rate of output. Similarly, we can calculate real output at disaggregated levels by final product or by industry. Unfortunately, these subindexes do not sum up exactly to their aggregate counterparts, because the averaging of growth rates has a nonlinear impact on levels. National accounts often include tables that show the contributions of final product components to the movement of total gross domestic product in a way that does add up.

These price index methods assume that there are no new goods or services (products that cannot be found in the earlier period). As the rate of new-product introduction has accelerated, price statisticians have turned to methods (called hedonic methods ) that attempt to price product characteristics, so that a new product can be evaluated as a new bundle of existing characteristics whose prices can be found in the previous period. The notion is roughly that if consumers are willing to pay 10 percent more for a computer that operates 20 percent faster, we can use that fact to estimate what a 20-percent-faster computer would have cost last period, even if it was not sold then.

When consumption expenditures are made by governments or nonprofit institutions on behalf of consumers, the Fisher ideal method does not apply, because there is no market price paid by the consumer. Instead, we can deflate output using the average cost of the inputs (for example, labor costs by wage inflation) or by the prices of similar products sold privately.

Cross-Border Comparisons When we compare the consumption of two countries, we face the problem that they have different currencies. One solution would be to compare the incomes based on the currencies exchange rates. However, many countries control the exchange rates of their currencies, so that the exchange rate is not market-based. Where the exchange rate is not controlled, it is often highly volatile, rendering these comparisons unreliable.

To solve this difficulty, national statisticians construct measures of purchasing power by pricing similar baskets of goods in different countries. This is inevitably a cruder calculation than intertemporal comparisons, because there are two worse problems: (1) the location of consumption affects its desirability, and (2) many products are available in some countries and not in others.


To consumption, we now add investment. To capture overall economic progress, the rate of net investment gross investment less the loss of existing capital due to depreciation, called capital consumption provides an idea of how much more production could have been devoted to consumption without running down the capital stock, and at the same time of how rapidly the economy is likely to grow, since more net investment today implies more capital input for tomorrows production.

Mainly for historical reasons, gross domestic product (GDP, product without deducting capital consumption) has been the featured measure of real economic activity. Consumption of fixed capital is about 10 percent of net domestic product in countries as different as the United States and India. Net domestic product, GDP less capital consumption, would be more exact as a measure of progress, but GDP is easier to measure in detail.

One way to measure real investment in terms comparable to real consumption could be to deflate nominal investment growth by the consumption inflation rate, a measure showing the quantity of consumption that is given up to provide investment. The alternative, the method actually employed in national income accounting, is to measure the change of prices of these investment goods themselves, combining them into Fisher ideal indexes. This measure is the appropriate one for measuring the contribution of the new investment to the stock of capital assets.

More recently, it has been recognized that intangible assets can also be accumulated and have been rising in importance. The 1993 revision of the United Nations System of National Accounts called for the recognition of investment in software, mineral exploration (such as drilling and surveys), and the creation of expressions, such as entertainment, literary works, and original art. Deliberately omitted were firm research and development expenditures, which were relegated to a satellite account, although the long-term value of these expenditures, about 2 percent of U.S. GDP, has been well documented. When long-lived investments are misclassified as expenses, output is underestimated, as are assets. As a consequence, future measured output growth and profitability may be underestimated. Investments in human capitaleducation and on-the-job experienceare also omitted from national income accounts.

Output Per Person and Productivity For many comparative purposes, it is sensible to measure economic progress relative to growth in population, hours worked, or total input of labor and capital services. Angus Maddison (1995) used real gross domestic product per capita (following in Kuznetss footsteps) to assess total world economic growth and inequality between regions. His statistics showed that between 1500 and 1820, world real GDP per capita rose only about 15 percent, while from 1920 to 1992, it rose 700 percent. His statistics also showed that the richest regions had roughly three times as much per capita income in 1820 as the poorest, while in 1992 the richest regions had fifteen times as much income per capita, so that this period of industrialization was one of substantial income divergence overall.

The main household time cost of economic activity is employment. For this reason, an alternative measure of economic efficiency is output per hour worked, also called labor productivity. Because Europeans work fewer hours per year than Americans, the U.S. economy fares better on GDP per capita measures, while Europe looks better on labor productivity measures.

The American economist and 1987 Nobel laureate Robert Solow (1957), noting that from 1909 to 1949 output per hour in the United States expanded 1.5 percent annually, argued that roughly one-eighth of this growth was due to increased capital per worker, and the remainder was due to overall advances in the techniques of production, or total factor productivity.

Solow used rather crude measures of labor and capital. Labor hours are not equal in economic value due to differentials in talent and training (formal or informal) reflected in differences in compensation rates. The services available from capital also vary; computers and fiber optics, for example, are more efficient than mechanical calculators and copper cable. The current state of the art in national income is to carefully adjust capital and labor for these quality differences when constructing measures of total factor productivity.

Dale W. Jorgenson, J. Steven Landefeld, and William D. Nordhaus (2005) have argued that gross domestic income should be deflated so as to reflect these real input services. That is, labor income would be deflated by the change in compensation for a given quality of labor services, averaged over the various types of labor in the economy. Similarly, capital income would be deflated to reflect the cost of capital services of various qualities. Under their proposal, nominal income and expenditure would remain equal, but real income, deflated by input prices, and real expenditure, deflated by output prices, would grow at different rates, with the difference being the growth of total factor productivity. The growth rate of quality-adjusted labor depends on demographics and on measures of human capital production and accumulation that are not yet in the national accounts.


The first estimates of national income were made in England by the politician and economist Sir William Petty (16231687) in the seventeenth century. Petty, whose aim was tax reform, estimated total expenditure as 40 million British pounds. He estimated capital income as 15 million pounds, obtaining labor income as a residual 25 million pounds. Towards the end of that century, Gregory King (16481712) made more systematic estimates for the income, saving, and expense of England for the year 1688. In the late seventeenth and early eighteenth century, the French economist Pierre de Boisguillebert (16461714), also a tax reformer, developed crude estimates of income and consumption in France, followed by more careful estimates by Sébastien Le Prestre de Vauban (16331707), a military engineer and advisor to the king, in 1707.

These early isolated estimates were based on comprehensive notions of production and output without the benefit of formal economic theorizing. As economic theory emerged, it unfortunately advocated overly limited estimates. The French physiocrats believed that only land produced net output over and above costs, which influenced the chemist Antoine-Laurent Lavoisiers (17431794) estimates of Frances income in the late eighteenth century, made while a commissioner of the public treasury. The classical economists, beginning with Adam Smith (17231790) and continuing through Karl Marx (18181883), distinguished the potential for labor to produce material wealth and thus emphasized the production of goods as opposed to services. National income estimates in much of the nineteenth century placed their main reliance on commodity production data, which also dominated the material product accounting of the Soviet-bloc countries in the twentieth century.

In 1921 it was possible to count nine countries that had comprehensive national income estimates for the year 1914, almost all prepared by scholars rather than government officials; of these only four could be judged to be within a probable error of 10 percent. Since that was the year World War I (19141918) broke out, governments often did not know their economic ability to mobilize for total war.

Official Estimates National income estimates, it became clear, were useful in anticipating the potential for income taxation and for estimating the potential for national defense production in times of war. The interwar depression offered new reasons for national income estimation: gauging the course of the economic crisis and measuring the relative pump-priming impact of government expenditure.

Beginning in 1925 in Canada and Russia, national governments began to support ongoing production of official estimates of national income. Simon Kuznets, whose article on National Income in the 1933 edition of the Encyclopedia of the Social Sciences set forth a highly influential conceptual framework and justification for national income accounting, inaugurated the U.S. official annual estimates in 1934 with the publication of National Income, 19291932. This publication included not only careful definitions of the concepts used but also line-by-line derivations of the text tables, with sources and methods.

The publication of General Theory of Employment, Interest, and Money (1936) by the British economist John Maynard Keynes (18831946), which emphasized the relationships among consumption, investment, and employment, added further impetus to the development of national income statistics, particularly given Keyness active role in government. In England, Colin Clarks (19051989) National Income and Outlay (1937) laid the statistical foundations for the modern manifold accounting framework by bringing together estimates of income, output, consumption, government revenue and expenditure, capital formation, saving, foreign trade, and the balance of payments. By 1939 official estimates were prepared in nine countries. Richard Stone in the 1940s put together the integrated system of accounts much as we have them today.


This entry will now explore the underlying logic that Stone brought to bear in constructing the SNA, beginning from the long-recognized fact that monetized economic activity is essentially both circular and two-sided, as illustrated in the highly simplified economy depicted in Figure 1.

The Circular Flow Once monetized, economic activity is necessarily circular. Households, in their role as employees, supply labor to firms who demand it, and receive wages. Firms use labor to supply consumption goods and services, which households buy using their wages.

Two-sided Flow The fact that each transaction has two equal sidesa purchase and a saleis a fundamental source of the interlocking character of the national accounts. Wages appear as an expense of firms and as an income of households. Consumption expenditures are an income of firms and an expense of households.

Were there no other economic actors or activities, we would have the simple accounts in Table 1. Because entries appear twice in the table, each set of accounts appears as a check on the other. Each of these tables matches resources (also called income or supply) and uses (also called expenses).

Now let us add capital to the firms accounting framework, arriving at Tables 2a and 2b, still highly simplified. The production of investment goods takes its place alongside consumption goods in firm resources. The portion of investment goods used up in production, that is, capital consumption, appears as a use. The expenditure on investment is instead an immediate contribution to capital and appears in the change-of-capital account. Given these definitions, the firms resources and uses table is balanced by operating surplus.

The change-of-capital account resources are firm income (called operating surplus or, in the corporate account, retained earnings after deducting payouts to shareholders) and capital consumption, and the use is capital investment. Capital investment may not equal

Table 1a
Firm income and expense
 Employee compensationConsumption expenditure
Table 1b
Household income and expense table
 Consumption expenditureEmployee compensation
Table 2a
Firm income and expensesUsesResources
Balancing itemEmployee compensation Capital consumption Corporate income taxes Operating surplusRevenues
Table 2b
Change-of-Capital accountUsesResources
 Gross capital investmentOperating surplus Capital consumption
Balancing itemNet lending (or less net borrowing) 

internal funds, and the item balancing the account is net lending or borrowing. The change-of-capital account links to the capital stock account because gross investment less capital consumption equals the increase in capital stock. Net borrowing or lending similarly equals the change in net financial assets. (Both these statements hold in principle rather than fully in practice, due to revaluations of assets.)

The national income accounts track all these transactions, not only for domestic firms and households, but also for governments, nonprofit institutions, and the rest of the world (foreigners as they interact with nationals through trade, investment, or transfers, such as foreign aid). Taxes and transfers, transportation costs, interest and dividend payments, and a host of the messy details of actual economies must be carefully inserted and measured. Each of these five groups of transactors has a current income and expense account (labeled resources and uses in the SNA), change-of-capital accounts, capital stocks, and financial assets and liabilities. This entry will not cover all these details, but their flavor can be discerned from the following account of gross domestic product.


The SNA begins from the broader concepts of total supply and uses of goods and services in the economy. Total supply can be produced domestically (domestic output) or purchased from abroad (imports). Domestic output, in turn, includes both final products and intermediate products that are consumed in production, such as flour baked into bread. Uses include intermediate consumption (equal to intermediate production), final consumption, gross capital investment, and exports. The two sides of the accounts form an equation: Supply (total output plus imports) equals uses (intermediate consumption plus final consumption plus gross capital investment plus exports). Included in final consumption are expenditures of governments and nonprofits on behalf of households.

Total supply is a consistent, measurable aggregate of economic activity, but it is not as good a measure of domestic economic activity because it includes imports (produced by foreigners) and because it counts activities that are early in the supply chain more than once. Subtracting imports and intermediate consumption from both sides, we arrive at gross domestic product as defined from the product side.

Nominal gross domestic product (Table 3) is defined as the market value of all final goods and services produced within a country in a given period of time (typically a year or a quarter year) measured in units of currency. From the expenditure side, as we have just shown, this includes consumption, investment, net exports (exports less imports), and government expenditures. Real gross domestic product is this quantity made comparable over time by adjusting for inflation.


Gross domestic product can be measured from three aspects: by expenditure on final product, by industrial origin, and by income. Under good statistical practice, the three sides are measured in large part independently and the closeness of the independent estimates forms a measure of the size of statistical errors and omissions.

Table 3
Three measures of gross domestic product
1. Outputdefined as
 Output of all units gross of intermediate production
Lessdefined as  
2. IntermediatesMaterials and services consumed during production
Equalsdefined asalso equal to:and equal to:
3. Gross Domestic Product4. Expenditure on final product equals sum of:5. Output by industrial origin equals sum of:6. Gross domestic income equals sum of:
 4a. Private Consumption plus5a. Gross value added by industry plus6a. Compensation of employees
 4b. Government expenditure plus5b. Net taxes on product6b. Taxes, less subsidies, on production and imports plus
 4c. Gross Investment plus. 6d. Operating surplus and mixed income, gross
 4d. Net exports  

Expenditures on Final Products To obtain estimates of final products, government statisticians survey firms that sell final products: retailers, service providers such as hotels, equipment manufacturers, and construction companies. Government expenditures are obtained from governmental budget statistics and net exports from customs data.

Industrial Origin The contribution of an industry to gross domestic product is its gross value added, that is, the industrys output less purchases of products and services from other industries (Table 3, column 3). These data are typically obtained from establishments, defined as units that produce output at a given location (a farm, a factory, a store) rather than firms, the legal entities that control establishments, which supply income data.

Input-output tables that show which industry supplies inputs to each industry enable analysts to calculate the ultimate resourcesraw materials, labor, and capitalrequired in each industrys final products. Such tables, developed by the 1973 Nobel laureate Wassily Leontief (19061999), a Russian-born American economist, permit the forecasting of the impacts of large fiscal projects on the nations and the worlds resources.

The revenues of establishments do not include taxes applied to the product. A consumer might spend 10 euros, but if sales tax is 5 percent, the stores revenues are only 9.50 euros. Thus when output is measured as industry gross value added at basic prices, the governments share, taxes less subsidies on products, must be also added in.

For a complex, industrial society, measuring industry value added is harder than measuring expenditures on final products because it requires data on intermediate inputs as well as revenue, and on all establishments, not just those selling final products. On the other hand, this estimate is not dependent on the accuracy of foreign trade statistics. And in developing countries where agriculture remains a large part of the economy, farm surveys are a means of measuring output with reasonable accuracy. In such countries, wholesale prices (called basic prices) may be used to evaluate this output.

Income When we turn to measuring income, we can no longer ignore the possibility that foreigners may own part or all of firms located domestically, or may have lent money to nationals. Domestic product measures output from activities located within the borders of a nation, regardless of whether the income accrues to nationals or foreigners. Gross national income measures the income of nationals, and must be adjusted for income earned abroad on foreign investment, less income foreigners earn domestically (Table 3, column 4). Converting to this basis permits us to calculate domestic income and saving.

In principle, the national accounts make a sharp distinction between firm capital income and household employment income, but in practice, such business units as sole proprietorships and partnerships mix employment and capital income, and are called mixed income. The precise treatment of this boundary necessarily varies from country to country.

Although households, nonprofits, and governments are clearly domestic, there are many income transfers among them, and with foreign entities. These include social welfare, education, medicine, and foreign aid. Determining exactly where to place such payments is to a certain extent arbitrary. The SNA includes a secondary income account to accommodate most of these transfers.

Included in the income account, for example, are government expenditures on behalf of consumers, which become final consumption of households in the secondary account.

The data obtained from tax filings on individuals and businesses are natural sources for estimates of income. These data are available with some lag, so they are supplemented by employment surveys, corporate reports, and sales data. Moreover, taxed income may be underreported. For example, in the United States, the bulk of proprietors and partnership income is estimated to go unreported in tax records.

Reconciliation There are inevitably discrepancies between the three measures of gross domestic product arising from their separate sources of data. Some countries, such as the United Kingdom, produce a final measure by averaging the three. Others, such as the United States, anoint one side of the accounts as being likely the most accurate (final product), and show a statistical discrepancy in the others.

National income accountants often produce tables that provide the details of how they transform the underlying data (say, corporate reports) in preparing their national income counterparts. These sectoral reconciliation tables help analysts understand the precise meaning of the national income statistics, and also can help in forecasting tax reports or corporate earnings reports.

Accuracy, Timeliness, and Revisions National income account statistics are revised as new data become available, and as new theory and empirical analysis improve our understanding of how to measure economic activity.

Initial official estimates of a given quarters economic activity in advanced economies are made available within a few weeks of the quarters end, when economic reports for the quarter are incomplete. National accountants generally prepare one or two revisions in the months immediately following, then annual revisions as tax statistics become available, and benchmark multiyear revisions when economic census or other occasional data become available. It is usually during benchmark revisions that new concepts and different methods are incorporated.

Because economic decisions are taken in the light of available statistics, some economic theories need to be tested in the light of national income statistics as they appeared when the decisions were taken. In the wake of work by Dean Croushore and Tom Stark (2001), the collection of real-time datathe preservation of economic statistics as they appeared at different dates, referred to as vintages of datahas become a responsibility accepted by some national income accountants.


This entry will not discuss the many complexities of capital and financial accounts, beyond a few important limitations to their measures.

In principle, net investment in domestic assets should equal the increase in domestic wealth. However, these book values of assets may differ widely from their market values. National income accountants have agreed not to include capital gains on assetsfor example, increases in market value of corporations that are not reflected in retained earningsas part of income. Doing so would make income highly volatile, and would largely separate movements in income from movements in economic activity. Excluding capital gains creates difficulties in measuring the output of financial institutions. Changes in capital gains are reflected in the financial asset accounts as changes in assets, but are not otherwise linked to the accounts.

Capital assets in the national accounts are divided into produced and nonproduced assets. In particular, land and mineral rights are considered nonproduced assets that do not change over time in real terms. Statistically, real additions to residential land have been small; in the United States they have been estimated to be less than 1 percent of GDP annually. Mineral depletion is not deducted from net domestic product.


The large gap between ideal national income accounts and actual income accounts has been partially filled by scholarly studies that fashion alternative measures, and by satellite accounts prepared by national accountants but considered too inaccurate, too controversial, or insufficiently important to be included in the standard accounts. The literature here is too vast to be cited, but the pioneering work of American economist Gary Becker, the 1992 Nobel laureate, must be acknowledged.

Household Production Accounts A longstanding concern about the valuation of the national income accounts is the productive activity that occurs within the household. To fill this void, nations are increasingly engaging in surveys of household time use, in which individuals diarize a day in five- to fifteen-minute intervals. By adding how the diarists feel during these activities, worklike activity might be differentiated from leisure activity.

Worklike activities can be priced either by opportunity cost (the wage the individual is foregoing) or by replacement cost (the cost to hire someone else to do the activity or to buy the output). Diaries also supply a measure of study time (to measure the creation of human capital).

Human Capital Accounts What are our investments in labor quality? In the national accounts, the costs of private and public education are considered household- and government-consumption expenditures, respectively. An unrecorded input is the time cost of the student or the worker. Reclassifying education as investment would involve both a reclassification of consumption items as investment and an addition to output due to inclusion of student work time and on-the-job training.

Health Accounts Health is produced through a combination of household production, environmental impacts, and medical production. One such quantification is quality-of-life years, where the average effect on the quality of life of a given disease is measured either based on capability or subjective reports.

Relative to labor, health can be linked to human capital, evaluating the cost of disease as a diminution of human capital. Or, more directly, health may be evaluated when law courts value loss of life or pain and suffering in civil trials.

Environmental Accounts Economists have long been aware that economic activity can have externalities, byproductseither desirable or undesirablethat affect other economic agents. Economic impacts may be quantifiable, for example, as costs incurred, when one firms pollution raises the cost of another firms activity or reduces the value of another firms land. Or a price may be placed on the type of pollution either directly via a tax (an SO2 tax) or through a market in which polluters must buy the right to pollute a certain amount (SO2 rights). More broadly, environmental satellite accounts can include the land, mineral rights, biota, and so forth.

Distribution The distribution of consumption and income is part of the economic welfare of a nation. Some of this difference may be due to economic choices, reflecting differing preferences and talents. Yet most observers believe that for a given level of average per capita income, a more even distribution of incomes is preferable to a less even one.

In principle, it is possible to estimate how much consumers are willing to pay to avoid declines in wealth, and therefore to provide a direct measure of consumer valuation of income distributions. This is an active and controversial area of research. As Kuznets suggested, it would be desirable at a minimum for national income accounts to include estimates of income distribution to aid in evaluating economic welfare.

SEE ALSO Gross Domestic Product; Gross National Income


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Leonard Nakamura

The views expressed here are those of the author and do not necessarily reflect those of the Federal Reserve Bank of Philadelphia or of the Federal Reserve System.

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