Getting the word out: Enforcement information dissemination and compliance behavior

The question for the tax authority is how individuals become aware of enforcement effort. To be an effective tool in reducing tax evasion taxpayers must be aware of the current audit and penalty regime. We use laboratory experiments to examine the compliance impact of types of information dissemination regarding audit frequency and results. The information includes “official” information disseminated by the tax authority, and “unofficial”, or informal, communications among taxpayers. Our results indicate that the effect of the type of post-audit information is conditional on whether the taxpayer is well informed of the audit rate prior to filing. We find that the tax authority would be served by pre-announcing audit rates credibly and by emphasizing the previous period audit frequency in annual reporting of enforcement effort.     

On Teaching a Fractured Macroeconomics

One of the most interesting results in the tax evasion literature is that an increase in the income tax rate would increase tax compliance. Despite its peculiarity, this result has gained acceptance as a cornerstone for further developments of the rational tax evasion model. However, because of the mathematical format by which it is conveyed, this counterintuitive result has remained inaccessible to undergraduate students as well as to noneconomists. The author first introduces the rational tax evasion model in a nonmathematical style that is accessible to any reader. Second, he shows that the behavioral predictions of the rational tax evasion model can easily be obtained using a simple graphical representation of the optimum condition that involves the derivation of a demand curve for tax compliance.     

Tax evasion in Kenya and Tanzania: Evidence from missing imports

In this paper we estimate the amount of tax evasion in customs authorities in both Kenya and Tanzania by calculating measurement errors in reported trade flows between the two countries and correlate those errors with tax rates. We find that the measurement error is correlated with the tax rates in Tanzania. We also introduced a third country into our analysis, the United Kingdom, and tax evasion seems to be more severe in trade flows between Kenya and Tanzania compared to trade flows between the United Kingdom and Kenya/Tanzania. Finally we also find that the tax evasion coefficient is lower in the Kenya–United Kingdom case compared to the Tanzanian–United Kingdom case which suggests that tax evasion is more severe in the Tanzanian customs authority.     

Tax evasion,social norms,and economic growth

We propose a theoretical model to account for the negative relationship between tax evasion and economic development. More precisely, we integrate tax morale into a dynamic OLG model of tax evasion. Tax morale is modeled as a social norm for tax compliance. We show that accounting for such nonpecuniary costs of evasion may explain (a) why the share of evaded taxes over GDP decreases when countries grow and (b) that tax morale is positively correlated with the level of GDP per capita. Finally, a higher tax rate increases aggregate evasion and the number of evaders when taxpayers decisions are interdependent.     

Tax evasion and tax morale: A social network analysis

We study the effects of tax morale and social norms on tax evasion when individuals interact in a network. We present a model that incorporates incentives for tax compliance in the form of punishment and fines, tax morale, and reputation for social behaviour. We assume that individuals adjust their tax morale by observing the neighbours' tax morale. We simulate the model for different values of the parameters and show that the steady-state share of taxpayers as opposed to tax-evaders is affected by the probability of finding like-minded peers in the reference group (network integration), the weight that individuals attribute to reputation, and the share of individuals who update their tax morale. Last, we consider the possibility of a fiscal authority using the knowledge of the network structure and targeting ‘central’ individuals. We show that by positively affecting the tax morale of individuals whose influence within the network is high, a fiscal authority can increase tax compliance.     

Tax Auditing as a Public Good Game: An Experimental Study on Punishment and Compliance

Prior experimental studies on tax evasion generally assume that the budget and the probability of audit are exogenously given, and ignore taxpayers' incentives to detect evasion and their compliance behaviour under such incentives. The experimental evidence of the present paper shows that, on average, subjects are willing to spend 20 to 30% of their tax revenue on auditing. Compliance is also greatly improved if subjects can determine the budget and, hence, the probability of audit. These findings suggest that taking taxpayers' incentives to detect evasion into consideration is important for the design of compliance‐improvement audit schemes.     

Social norms and economic growth in a model with labor and capital income tax evasion

Empirical evidence suggests that low-income countries are characterized by high levels of labor and capital income tax evasion while the opposite is true for high-income countries. This paper proposes a model to study the relationship between economic growth and both types of income tax evasion. We show that the existence of a social norm towards tax compliance generates a complementarity between capital and labor income tax evasion which explains the decline of both the share of evaders in the population and the amount of tax evasion when countries accumulate capital. The model predicts that the level of tax morale is positively correlated with both types of income tax evasion and the level of income per capita, consistent with recent empirical evidence. Finally, a higher tax rate increases the share of evaders in the population and aggregate tax evasion.     

Corporate tax evasion: The case for specialists

We analyze the role of accounting specialists who help corporations evade/avoid taxes in a game of incomplete information played by a tax authority, corporate taxpayers, and an accounting specialist. In addition to a full equilibrium characterization, we establish that (i) marginal changes in enforcement are not effective when evasion/avoidance is pervasive; (ii) fines on firms as opposed to specialists are more effective in such situations; (iii) reducing auditing costs and increasing “creative accounting” costs are effective in curbing evasion when tax compliance is relatively high.     

Illusion of control and the pursuit of authority

We measure participants’ willingness to pay for transparently useless authority—the right to make a completely uninformed task decision. We further elicit participants’ beliefs about receiving their preferred outcome if they make the decision themselves, and if another participant makes the decision for them. We find that participants pay more to make the decision themselves if they also believe that they can thus increase the probability of getting their preferred outcome. Illusion of control therefore exists in a controlled laboratory environment with monetary incentives and is connected to peoples’ pursuit of authority.     

Wage endogeneity,tax evasion,and optimal nonlinear income taxation

This paper studies the interaction between tax evasion and wage endogeneity within a Mirrleesian optimal tax framework. It characterizes the optimal marginal income tax rates on the skilled and the unskilled workers and the optimal amount of resources to be spent on deterring tax evasion. It shows that tax evasion weakens the incentives for the government to manipulate the marginal tax rates for the purpose of exploiting general equilibrium effects on wages. Moreover, the extent of this depends on the curvature of the evasion cost function. It also argues that marginal income tax rates are likely to be higher when the government attempts to deter evasion.     

The evasion of fiscal and labor regulations: Firm behavior and optimal tax policy

Firms face many fiscal and labor regulations, but they may evade these legal requirements in several different ways. We develop a model that captures these two types of evasion decisions and unlike existing literature assume firms can evade labor regulations independently from income tax responsibilities. We characterize firms’ entry and evasion behavior and find that the design of the tax system can generate both positive and negative correlations between evasion decisions consistent with what is observed empirically. We then characterize optimal government policies given the firms’ decisions. We obtain intuitive optimal tax rules that highlight the trade‐offs the government faces when firms have multiple margins on which to evade.     

Tax progressivity, income distribution and tax non-compliance

This article examines the determinants of tax non-compliance when we recognise the existence of an imperfectly competitive “tax advice” industry supplying schemes which help taxpayers reduce their tax liability. We apply a traditional industrial organisation framework to model the behaviour of this industry. This tells us that an important factor determining the equilibrium price and hence, the level of non-compliance, is the convexity of the demand schedule. We show that in this context, this convexity is affected by the distribution of pre-tax income, the progressivity of the tax-schedule and the way in which monitoring and penalties vary with income. It is shown that lower pre-tax income inequality as well as a less progressive tax code may cause more tax minimisation activities. Therefore, the frequently advocated policy of reducing the highest tax rate may fail as a policy directed at improving tax discipline. One way of offsetting the possible harm to tax compliance from a less progressive tax could be an adjustment of the penalty and monitoring functions.     

The Big Bang: Tax Evasion After Automatic Exchange of Information Under FATCA and CRS

ABSTRACT

After decades of ineffective attempts to fight tax evasion, the Foreign Account Tax Compliance Act (FATCA) and the Common Reporting Standard (CRS) recently implemented the first encompassing international exchange of tax-related information on an automatic basis. This is an important development because tax evasion contributes to rising socio-political inequality and political sovereignty losses. This article assesses the treaties’ impact on tax evasion by conducting a difference-in-difference analysis of cross-border asset data. The results show that the treaties are successful. Household assets in tax havens that are not hidden behind corporate identities are estimated to be 67 per cent lower than they would have been without automatic exchange of information. Furthermore, this reduction is not offset by an increase in treaty circumvention using identity concealment or asset shifting to non-compliant jurisdictions. FATCA and CRS thus implement the first effective international cooperation against tax evasion. The results imply that political globalisation is capable to mitigate the political sovereignty losses and rise of inequality caused by economic globalisation.     

The political economy of contributive pensions in developing countries

This paper sheds light on the role of public institutions as a way to reduce tax evasion through a close link between payroll taxation and pension benefits. We use a political economy model in which agents have the possibility to hide part of their earnings in order to avoid taxation and, where the public system is more efficient in providing annuitized pension benefits than the private sector. We show that in the absence of evasion costs, agents are indifferent to the tax rate level as they can always perfectly adapt compliance so as to face their preferred effective tax rate. There is unanimity in favour of the maximum tax rate and, the public pension system is found to be partially contributive in order to increase tax compliance and thus the resources collected. This, in turn, enables higher redistribution toward the worst-off agents. When evasion costs are introduced, perfect substitutability between compliance and taxation breaks down. At the majority-voting equilibrium, individuals at the bottom of the income distribution who are in favour of more redistribution, and those at the top who want to transfer more resources to the old age, form a coalition against middle-income agents, in favour of high tax rates. In addition to the previous tax base argument, the optimal level of the Bismarkian pillar is now chosen so as to account for political support.     

A contest with the taxman - the impact of tax rates on tax evasion and wastefully invested resources

We develop a moral hazard model with auditing where both the principal and the agent can influence the probability that the true state of nature is verified. This setting is widely applicable for situations where fraudulent reporting with costly state verification takes place. However, we use the framework to investigate tax evasion. We model tax evasion as a concealment-detection contest between the taxpayer and the authority. We show that higher tax rates cause more evasion and increase the resources wasted in the contest. Additionally, we find conditions under which a government should enforce incentive compatible auditing in order to reduce wasted resources.     

Dissertation abstract: “Essays in applied economics on the intervention of a third player in agency relationships”

Agency theory has established that appropriate incentives can reconcile the diverging interests of the principal and the agent. Focusing on three applications, this dissertation evaluates the empirical relevance of these results when a third party interacts with the primary contract. The analyses provided rely on either laboratory or natural experiments. First, corruption is analyzed as a two-contract situation: a delegation contract between a Principal and an Agent and a corruption pact concluded between this Agent and a third player, called Briber. A survey of the recent microeconomic literature on corruption first highlights how corruption behavior results from the properties of those two agreements. We thereafter show that the Agent faces a conflict in reciprocities due to those two conflicting agreements. The resulting delegation effect, supported by observed behavior in our three-player experimental game, could account for the deterrence effect of wages on corruption. Second, health care is governed by contradictory objectives: patients are mainly concerned with the health provided, whereas containing health care costs is the primary goal of health care administrators. We provide further insights into the ability of incentives to balance these two competing objectives. In this matter, our theoretical and econometric analysis evaluates how a new mixed compensation scheme, introduced in Quebec in 1999 as an alternative to fee-for-services, has affected physicians’ practice patterns. Free switching is shown to be an essential feature of the reform, since it implements screening between physicians. Finally, the demand for underground work departs from the traditional Beckerian approach to illegal behavior, due to the dependence of benefits from illegality on competitors’ behavior. We set up a theoretical model in which the demand for underground work from all producers competing on the same output market is analyzed simultaneously. We first show that competition drastically undermines the individual benefits of tax evasion. At equilibrium, each firm nonetheless chooses evasion with a positive probability, strictly lower than one. This Bertrand curse could then account for the “tax evasion puzzle” i.e. the overprediction of evasion in models that ignore market interactions. We thereafter show that allowing firms to denounce competitors’ evasion is not likely to solve this curse—by providing a credible threat against price cuts, it fosters illegal work. Empirical evidence from a laboratory experiment confirms these predictions. Without denunciation, experimental firms often choose evasion whereas evasion benefits are canceled out by competition. When introduced, denunciation is rarely used by firms, but the threat makes evasion profitable. JEL Classification K42, I18, D21, C25, C91     

Tax Amnesties In A Dynamic Model of Tax Evasion

We present a dynamic model of tax evasion, where tax liabilities last for two periods and the probability of an inspection decreases with the sum of taxes evaded this period plus taxes evaded last period. We show that a tax amnesty that pardons more than the evasion penalties (an extensive amnesty) can temporarily improve compliance. Whenever the inspection technology improves, steady state compliance also improves, but the economy takes time to transit from one steady state to the other. We show that an amnesty may accelerate this transit, or even make it instantaneous if the amnesty is extensive enough.     

Tax Evasion, Tax Competition and the Gains From Nondiscrimination: the Case of Interest Taxation in Europe

This paper uses a game–theoretic approach to analyse the taxation of interest income in Europe in the presence of tax evasion. The model allows us to assess the success of various reform proposals. We argue that the tax treatment of nonresidents' interest income plays a crucial role. When decisions on discrimination and on withholding tax rates are made non-cooperatively, the outcome is similar to a prisoners' dilemma. All countries discriminate, but in equilibrium internationally mobile portfolio capital evades taxation successfully. In contrast, if all governments did not discriminate, tax competition leads to less tax evasion.     

Cheating,emotions, and rationality: an experiment on tax evasion

The economics-of-crime approach usually ignores the emotional cost and benefit of cheating. In this paper, we investigate the relationships between emotions, deception, and rational decision-making by means of an experiment on tax evasion. Emotions are measured by skin conductance responses and self-reports. We show that the intensity of anticipated and anticipatory emotions before reporting income positively correlates with both the decision to cheat and the proportion of evaded income. The experienced emotional arousal after an audit increases with the monetary sanctions and the arousal is even stronger when the evader’s picture is publicly displayed. We also find that the risk of a public exposure of deception deters evasion whereas the amount of fines encourages evasion. These results suggest that an audit policy that strengthens the emotional dimension of cheating favors compliance.     

Term-limit evasions and the non-compliance cycle

Executive term limits are evidently under stress in many jurisdictions. One mode in which they are evaded is through the formal revision or abrogation of a constitution. Such a process accelerates a pernicious cycle in which constitutional non-compliance begets constitutional instability, which in turn begets subsequent non-compliance. Such a non-compliance cycle is a core problem in law, and one that deserves more careful examination in various domains. This essay unearths original historical evidence of term-limit provisions and executive tenure in an effort to illuminate and evaluate the phenomenon. A background concern is that of international (and domestic) approaches to term-limit evasion. One intellectual response is that of militant democracy. The logic of that approach would imply the entrenchment and protection of term limits, which would presumably disrupt the cycle of non-compliance.