THE HIDDEN ECONOMY: STATE AND PROSPECTS FOR MEASUREMENT1

To know the size and development of the hidden or underground economy is important for policy making, mainly because the measures undertaken may be misdirected if they are based on biased official statistics. The hidden economy can be measured by considering indicators. The direct methods are based on voluntary surveys and on tax auditing and other compliance methods. The indirect estimation methods rely on the identification of residuals with respect to income and expenditures, as well as in the labor and money markets. The strengths and weaknesses of each of these measurement approaches are discussed and the resulting estimates of the size of the hidden economy are compared. A different approach to measurement is to look at the determinants leading to the existence and growth of the hidden economy. Finally, the method of “unobserved variables” allows the combination of the two approaches by simultaneously considering the determinants and indicators of the under- ground economy. The results show a considerable range of sizes for a given country and year. Though there is a broad range of size estimates, there is general agreement that the hidden economy's size has been growing for all countries over recent decades. Further progress in quantitative knowledge about the hidden economy requires the development of a theoretical model which analyses the interdependencies between the official private sector, the hidden economy, and the public sector.     

CORRUPTION AND THE SHADOW ECONOMY*

This article develops a simple framework for analyzing the links between corruption and the unofficial economy and their implications for the official economy. In a model of self‐selection with heterogeneous entrepreneurs, we show that the entrepreneurs' option to flee to the underground economy constrains a corrupt official's ability to introduce distortions to the economy for private gains. The unofficial economy thus mitigates government‐induced distortions and, as a result, leads to enhanced economic activities in the official sector. In this sense, the presence of the unofficial sector acts as a complement to the official economy instead of as a substitute.     

ESTIMATING VALUE ADDED OF ILLEGAL PRODUCTION IN THE WESTERN BALKANS

Several economists continue to assert that the official national accounts of many countries do not cover a large “hidden” or “underground” economy. This article looks at one component of the underground economy, namely illegal activities. According to the UN System of National Accounts, production of goods and services that are illegal should be included in the Gross Domestic Product (GDP) if both the producers and consumers are willing partners to the transactions involved. We examine the estimates of illegal production recently made by several countries in the Western Balkans and conclude that, if illegal activities were fully included in their official GDP estimates, they would increase by about 1 percent. Trade in narcotics and prostitution are the two most important kinds of illegal activities in most countries and we look in detail at how estimates for these activities were made by the Western Balkan countries.     

ESTIMATES OF THE HIDDEN ECONOMY IN AUSTRIA ON THE BASIS OF OFFICIAL STATISTICS

By definition, the hidden economy eludes straight observation by means of official statistics. Nevertheless, attempts to quantify these phenomena usually make reference to official materials in various respects, e.g. as regards definition, or when evaluating the relative importance or some indirect reflections of such activities. In this context, official statistics may serve as a particularly useful reference when those sections of the economy are concerned which are hardly or not at all susceptible to hidden activities. Such sections can be identified in terms of industry and in terms of occupation.
In the present investigation such techniques have been used to a large extent and only official statistics have been drawn upon as a data source. Accordingly, the outcome matches closely with national accounts concepts and existing national classifications of various socio-economic statistics. The estimates refer to the hidden ("off the records") activities of the self-employed as well as to similar activities of employees, the unemployed etc. ("moonlighting"). Per se criminal activities have not been included, however. As regards the self-employed the estimates basically rely on income differentials observed between small scale entrepreneurs and their employees. As regards employees numbers employed of various preselected occupational categories and of some additional groups of non-employed have been processed successively, matching them e.g. with comparable data on time budgets and regional frequency.
The outcome largely confirms common experience or expectations as regards the fields where hidden activities assume significant relative importance whereas the overall size of the hidden economy turned out fairly small as compared with official GDP.     

Problems measuring the underground economy in transition1

An easy and popular method for measuring the size of the underground economy is to use macro data such as money demand or electricity demand to infer what the legitimate economy needs, and then to attribute the remaining consumption to the underground economy. Such inferences rely on the stability of parameters of the money demand and electricity demand equations, or at very least on knowledge of how these parameters are changing. We argue that the pace of change of these parameters is too variable in transition economies for the above methods of estimating the size of the underground economy to be applicable. We make our point by using Czech Republic and other transition country data from the financial and electricity sectors.     

China's Statistical System in Transition: Challenges, Data Problems, and Institutional Innovations

While China's official statistics are often regarded as of questionable quality, critics are rarely aware of just how difficult it is to compile accurate statistics in a developing and transition economy. This paper traces the challenges economic reforms pose for the development of China's statistical system, establishes a typology of the resulting data problems in official Chinese statistics today, and examines how these challenges and data problems are being addressed through institutional innovations in data compilation. Analysis of China's data compilation methods allows broad judgments on data quality. Special attention is given to GDP data as the aggregate measure of productive activities in China.     

转型经济中的可信承诺问题研究

可信承诺问题是转型经济体的一个重要问题。使承诺可信的途径有外生和内生两种。内生途径大体相当于博弈论中所强调的“声誉机制”,而外生途径则蕴含在一系列的制度安排之中,包括信息、权力和资源的分散化以及充分的竞争等。本文将以转型经济中两类重要的可信承诺问题———软预算约束问题和棘轮效应问题———的有关模型研究来说明我们的观点。     

The Inequality of Household Incomes in Australia*

This paper presents income inequality statistics for Australia calculated from the published results of the two official income surveys of 1968-69 and 1973-74. These results suggest firstly that the level of household income inequality in Australia has been previously understated. Secondly, it is noted that there was little, if any, change in inequality over the period. However, when families are classified by number of income earners an unambiguous decline in inequality within these groups occurs. These observations are related to other changes in the economy.     

The “Dark Side” of Deregulation: How Competition Affects the Size of the Shadow Economy

This paper builds a theory that explains the dramatic expansion of the underground economy in the late 1990s by the sharp increase in market competition worldwide. I model an oligopoly game where firms first decide on entry and sector, and then compete in price. Operating in the underground sector reduces variable costs, but comes at the risk of being detected and fined. As competition intensifies (i.e., as consumers become more and more price‐sensitive), underground firms attract more demand, thus stealing business and profits from official firms. As a consequence, more firms enter the underground economy. A lenient policy toward the underground economy may increase welfare when markups are high, but will be welfare‐detrimental when markups are low.     

The hard shadow of the Greek economy: new estimates of the size of the underground economy and its fiscal impact

This article presents new estimates of the Greek underground economy and explores the link between the underground economy and aggregate debt. We show that the Greek underground economy has been underestimated heavily and has been on a rising trend again since Greece adopted the Euro. We also present evidence that the size of the underground economy is positively related to the debt-to-GDP ratio, implying that fighting the underground economy is also conducive to financial and macroeconomic stability. Our results suggest that for our sample of 11 EMU member countries, the loss of the inflation tax as an economic policy instrument had drastic consequences. While the underground economy did not have a statistically significant impact on aggregate debt before the introduction of the Euro, it has pushed up the debt-to-GDP ratio in our sample since.     

Price Indexes for US Medical Care Spending, 1980–2006

We construct price indexes for medical care spending in the US economy for the period 1980–2006. Our indexes show slower price growth than the official deflator from 1987–2001, consistent with the fact that indexes that improve on the official statistics typically find slower price growth than the official indexes. However, the result is reversed for the 2001–2006 time period. We develop a decomposition that parses out the numerical differences in these indexes into three factors that are held constant in the official price indexes but are not in our indexes: changes in the type of provider supplying care, changes in the type of insurance plan used by the patients, and changes in the bundle of procedures used to treat patients. Our results suggest that using the official price measures may provide misleading conclusions about spending trends and productivity growth in this important sector over this time period.     

How Fast Has Chinese Industry Grown?—Measuring The Real Output Of Chinese Industry, 1949–97

The motivation of this study is to test the widely accepted but never tested hypothesis that Chinese official statistics on growth rates may contain serious upward biases. By adopting a Laspeyres quantity index approach to the recently available official physical output data at commodity level, we have constructed an independent output index for Chinese industry, and produced a unique data set for the value added of 17 major industrial branches at 1987 prices for the period 1949–97. This study has, for the first time, systematically tested this hypothesis with supportive results. It implies that any growth accounting study using the official growth rates may have exaggerated the productivity performance of Chinese industry.     

An Exploration of the Greek Shadow Economy: Can Its Transfer into the Official Economy Provide Economic Relief Amid the Crisis?

We explore the determinants of the Greek shadow economy, its interaction with the official economy, and its relationship with corruption. In doing so, we undertake — for the first time — an interdisciplinary review of economic and political studies on the size and determinants of the shadow economy, tax evasion, undeclared work and, moreover, of their relation with corruption in Greece in order to reveal the extent and complexity of these phenomena. We estimate the size and determinants of the shadow economy via a multiple-indicators-multiple-causes (MIMIC) approach. Our findings indicate that the important determinants are factors related to macroeconomic conditions, such as unemployment and GDP growth, and institutional factors, such as tax morale and the rule of law. We also indicate that the shadow economy and corruption are complementary and that the official and the shadow economy substitute each other over the business cycle. An adoption of policy based on these findings would lead to a successful transfer of part of the shadow economy to the official economy, would boost government revenue, and would eventually lead the Greek economy out of the depression that emerged as a result of the sovereign debt crisis.     

The methodology used by Russian statistical bodies to analyse small business

Assessing the level of development of small business in Russia requires a critical analysis of official statistics, owing to the existence of several inconsistencies. In addition, the frequent changes in the methodology make it difficult to compare the data over a period. It must also be taken into account that Russian and Western official data on small business are not fully comparable, as the Russian definition of small business has several limitations. For this reason its contribution to the economy is understated. Officially, employment in small businesses has stopped growing since 1994. Survey‐based results, however, point to a continuous increase in the number of people employed by new private enterprises, suggesting that the emergence of entrepreneurship has been an organic process, as in the leading transition countries, although it has been much slower in Russia.     

中国的GDP及其若干统计问题

本文探讨了GDP统计方法的基本概念和局限性,特别是从历史的角度分析了GDP核算体系对日益增长的无形投资(intangibleinvestment)和知识经济的忽略,并在此基础上对中国经济及其在全球经济中的地位和影响作了重新评估。文章指出,现行GDP统计方法没有包括非市场经济、地下经济和闲暇活动;低估了我国劳务等产业创造的价值及其增长潜力;无法追踪企业在技术革新、产品设计、品牌打造和员工培训这些无形资产方面的投资;忽略了我国经济中迅速增加的知识经济成份,特别是教育投资成份。文章的结论是,由于历史、文化和制度诸方面的原因,这些忽略和低估对处于转型过程中的发展中国家中国来说要远远大于发达国家和其他发展中国家,因此,我国的实际经济总量及其增长率,特别是增长潜力要远高于官方的统计数字。     

Consumer prices and private consumption in Poland and Austria

Starting from a bilateral comparison of consumption levels in Poland and Austria in 1964, 1973, and 1978, the authors calculate the implicit price indexes for both countries. The confrontation of the implicit and official price indexes seems to prove that official data grossly understate price inflation and overstate real growth of consumption in Poland. The causes of this discrepancy are mainly seen in the systemic difficulty of properly measuring price changes in Poland's “shortage economy.” This problem may arise in all international comparison between centrally planned and market economies when official price indices are used.     

China’s Capital Stock Series by Region and Sector

The lack of capital stock statistics for empirical research of the Chinese economy has for a long time been one of the major impediments in the profession. Professor Gregory Chow is one of the pioneers who attempted to deal with this matter. His seminal paper on China’s capital formation and economic growth was published in 1993 (Chow, 1993). Since then many authors have estimated their own capital stock data series. However, most authors have focused on investigations at the national level and their findings are not without controversies. In particular, few studies have provided estimates of capital stock for China’s regional economies. This paper adds to the existing literature in several ways. First, it presents a critical review of the methods and findings in the existing literature. Second, it proposes an alternative approach to estimate China’s capital stock series by region as well as across three economic sectors (agriculture, industry and services). Finally, preliminary analyses of the derived capital stock statistics are conducted to examine growth, disparity and convergence in China’s regional economies.     

The informal economy and the growth of small enterprises in Russia1

This article uses Russian regional data to estimate the determinants of the informal economy and to examine the relationship between the informal economy and the growth of legally registered small private enterprises during the transition period. After obtaining an estimate of the size of the informal economy in each Russian region from 1992 to 1999, an analysis is performed to find whether reform progress and institutional qualities account for the informal economy. An evaluation of the links between the informal economy and the growth of small enterprises within Russia is then carried out. The findings suggest that Russia's informal economy resulted from a delay in reform and low qualities of institutions. It was found that the growth of small enterprises is positively affected by the informal economy. These results imply that the informal economy helped entrepreneurial activities to grow in the face of government failure, but these informal activities tend to become official over time.     

The pedagogy of tax evasion: Its extent and its determinants

This pedagogical note develops a model of individual choice and a comprehensible and functionally realistic framework that explains how the size of the underground economy or the extent of aggregate income tax evasion can be estimated. It also describes three models for estimating the size of the underground economy for the U.S. and provides a formal but easily understood analytical model of determinants of the extent of aggregate income tax evasion. The latter model is useful in serving as the basis for empirical estimates of determinants of income tax evasion and is useful in enhancing student understanding economic behavior through student projects.     

Empirics of the median voter hypothesis in Japan

This paper empirically analyses for the first time the median voter hypothesis in Japan as a means of investigating whether or not Japanese prefectural finance reflects the preference of the median voter. The hypothesis is tested by estimating the demand functions of local public goods in each prefecture. As official data on the income of the median voter is unavailable in Japan, respective prefectural data is constructed using official data on income distribution and taxation. Reasonable intuitive interpretation of results indicates that the median voter hypothesis is supported in prefectural finances, and that voter preference affects the outcome of gubernatorial elections, i.e., a governor's reelection probability, by estimating a probit model. When considering the centralized prefectural government system in Japan, these results indicate that central government management of prefectural expenditures via inter-regional grants ultimately reflects jurisdictional median voter preference. First version received: December 1997/Final version received: February 1999