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This paper investigates the costs and benefits of concluding double tax treaties with investment hubs. Based on a sample of 41 African economies from 1985 to 2015, the results suggest that signing treaties with investment hubs is not associated with additional investments; yet, these treaties tend to come with non-negligible revenue losses. Building on a theoretical model, the paper investigates the role of treaty shopping in driving nominal investment flows and provides indirect evidence for its importance in the sample.

Out of all double tax treaties (DTTs) in force in 2012, around 41% are symmetric (single-rated) and 59% are asymmetric (multi-rated), i.e., they prescribe different dividend withholding tax rates depending on the foreign investor’s ownership fraction. The paper investigates the reasons for this phenomenon, namely why some countries in their DTTs prefer homogenous withholding tax rates over separate rates for participation and portfolio dividends. In a theoretical model, I demonstrate why home countries may have an interest in a high withholding tax rate in the host country, even though they do not receive the revenue from this tax. Further, I find confirming evidence that a reason for having multi-rated withholding taxes on dividends is an existing spatial dependence on the rates of the countries’ peers that may be a driving factor for setting multi-rated taxes. Finally, I confirm that the spread itself (i.e., the difference between the portfolio and participation dividends negotiated in the tax treaty) is also affected by the peer countries.

This paper shows that a small country can have an incentive to tax inbound FDI even in a setting with perfect competition and free entry that is compatible with the Diamond–Mirrlees (Am Econ Rev 61(1):8–27, 1971) framework. While firms make no aggregate profits worldwide due to free entry in this setting, they make taxable profits in foreign production locations because their costs are partly incurred in their home countries. These profits are not perfectly mobile because firm productivity varies across locations. Consequently, the host country does not bear the entire burden of a tax on foreign firms, giving rise to an incentive to tax foreign investors. The standard zero optimal tax result can be recovered in this model under an apportionment system that ensures zero economic profits in each location.

This paper presents the properties of optimal piecewise linear income tax systems for families, based on joint and individual incomes. It models the interaction between the wage rates of mothers as “second earners” and variation in child care prices and productivities as determinants of heterogeneity in second earner labour supply. We find that individual taxation welfare dominates joint taxation on grounds of both efficiency and equity. Heterogeneous labour supplies, the positive relationship between household wages and child care quality, and the sharp rise in wage rates in the top percentiles of the primary wage distribution account for this result. In addition to reducing the intra-household net-of-tax wage gap, individual taxation removes the opportunity for tax avoidance that income-splitting makes available to high-wage primary earners, leading to a much fairer distribution of the tax burden.

This paper is a substantial revision of a paper presented at the 71st Annual Congress of the International Institute of Public Finance (Dublin, 20–23 August, 2015), which was issued under the title Tackling Spillovers by Taxing Corporate Income in the European Union at Source, as CPB Discussion Paper 324 (February 2016) and as CESifo Working Paper No. 5790 (March 2016).

The existing literature on optimal taxation typically assumes there exists a capacity to implement complex tax schemes, which is not necessarily the case for many developing countries. We examine the determinants of optimal redistributive policies in the context of a developing country that can only implement linear tax policies due to administrative reasons. Further, the reduction of poverty is typically the expressed goal of such countries, and this feature is also taken into account in our model. We derive the optimality conditions for linear income taxation,commodity taxation, and public provision of private and public goods for the poverty minimization case, and compare the results to those derived under a general welfarist objective function. We also study the implications of informality on optimal redistributive policies for such countries, and comment on the potential for minimum wage regulation. The exercise reveals non-trivial differences in optimal tax rules under the different assumptions. The derived formulae also capture the sufficient statistics that the governments need to pay attention to when designing poverty alleviation policies.

This paper studies the effects of several tax reforms in an economy in which taxes are partially evaded by means of undeclared work. To this purpose, we consider a two-sector dynamic general equilibrium model calibrated to Italy which explicitly accounts for underground production. We construct various tax reform scenarios, such as deductibility of labor costs from business tax, ex-ante budget-neutral tax shifts from direct to indirect taxes, and various tax cuts financed by decreases of government spending. We find the following results. First, neglecting the existence of the underground sector may lead to severely miscalculate the macroeconomic impact effects of tax reforms, especially in the short run, where policy interventions produce direct and indirect effects on the markup. Second, partial deductibility of labor costs from the business tax base proves to be highly expansionary and highly detrimental to the size of the underground sector. Third, the dimension of the underground sector is permanently and considerably reduced by changes in the tax mix that diminish the labor tax wedge. Finally, all the considered tax reforms take the public-debt-to-output ratio toward a prolonged downward path.

Policies to reduce aggressive tax avoidance are increasingly being implemented or discussed in many countries around the world. Tax authorities hope that such policies will generate new tax revenue by increasing overall tax compliance. We present an experimental design to investigate the effect of a stylized anti-avoidance tax policy on tax compliance behavior. We highlight that anti-avoidance tax policies that reduce tax avoidance can also induce an increase in tax evasion (“substitution effect”), which limits the additional tax revenue these policies will generate. We show that the degree of substitution depends crucially on behavioral factors such as tax morale. Policymakers therefore also need to consider behavioral features while designing such policies and estimating their potential effects.

This paper focuses on the effects of a corporate income flat tax reform on businesses’ investment decisions. Since 1990, several Swiss states (cantons) have been switching from a graduated to a flat tax rate scheme on profits. The paper assesses the effects of such a reform both on the number of establishments (i.e. extensive margin of investment) and on the number of employees (i.e. intensive margin) in a given jurisdiction by computing a difference-in-differences estimation. Our results suggest that the introduction of a flat tax reform on corporate income taxes has a negative and statistically significant impact on both margins of investment. Moreover, the effect is considerably larger for riskier firms, suggesting that progressive taxation acts as an insurance effect for risk-averse entrepreneurs.

This article studies how agglomeration economies affect tax competition between local jurisdictions. We develop a theoretical model with two main testable predictions: in a setting where agglomeration forces lessen the responsiveness of capital to tax, high-regime agglomeration jurisdictions should adopt a rent-taxing behavior, and they should react less to their neighbors’ tax policies. The panel dataset spans the period from 1995 to 2007 and focuses on the local business taxes set at the French mid-subnational jurisdiction level of departements. First, instrumental variables estimates indicate that attractive jurisdictions capture a significant part of firms’ agglomeration rent by levying higher tax rates. An increase by 1% of the localization economies indicator (a specialization index) leads to increasing the business tax rate by 0.43%. Second, local tax setting behaviors are characterized by a mimetic behavior, with best response functions that slope upwards. We propose a two-agglomeration-regime spatial lag model to estimate through ML the relationship between tax competition and attractiveness. Our main result shows that both are linked and tax mimicry is less pronounced if a jurisdiction is agglomerated. Specifically, in response to a decrease in the tax rate of neighboring local governments by 1%, local governments with strong agglomeration economies reduce their tax rate by 0.4% against 0.6% for local government characterized by a low-agglomeration regime. We show that the classical one-size-fits-all-case of a single regime of agglomeration suffers from a 40% downward bias for low-agglomeration jurisdictions. We draw the link to policy praxis by discussing the optimal design of equalization schemes.

In this paper, we revisit the combined effect of horizontal and vertical tax externalities in a federal context, extending the theoretical framework of Keen and Kotsogiannis (Am Econ Rev 92(1):363–370, 2002) by allowing for ad valorem and residence-based taxation. When taxes are levied ad valorem rather than per-unit firstly, we find the interaction between both types of externalities is more ambiguous than commonly understood. As a result, and contrary to earlier findings, fiscal equalisation mechanisms such as the representative transfer system (RTS) fail to fully internalise the tax externalities. Given these limitations, we derive the conditions under which a standard RTS will either: (1) at least nudge politicians in the right direction; (2) realise no welfare gains at all; (3) considerably overshoot the second-best efficiency mark causing welfare loss. Lastly, we find that when taxation is residence-based rather than source-based, a different kind of competition emerges where tax cuts are aimed at stimulating outward factor flows, rather than attracting inward flows.

The tax bias in favour of debt finance under the corporate income tax means that corporate debt ratios exceed the socially optimal level. This creates a rationale for a general thin capitalization rule limiting the amount of debt that qualifies for interest deductibility. This paper sets up a model of corporate finance and investment in a small open economy to identify the optimal constraint on tax-favoured debt finance, assuming that a given amount of revenue has to be raised from the corporate income tax. For plausible parameter values, the socially optimal debt-asset ratio is 2–3% points below the average corporate debt level currently observed. Driving the actual debt ratio down to this level through limitations on interest deductibility would generate a total welfare gain of about 5% of corporate tax revenue. The welfare gain would arise mainly from a fall in the social risks associated with corporate investment, but also from the cut in the corporate tax rate made possible by a broader corporate tax base.

We study how different national taxation schemes interact with geographic variation in productivity and consumption amenities in determining regional populations. A neoclassical migration equilibrium model is used to analyze the current nominal income tax system in Norway. The analysis is based on estimated regional income differences accounting for both observable and unobservable individual characteristics and the value of experience. Given regional differences in incomes and housing prices, quality of life and productivity are calibrated to model equilibrium. Compared to an undistorted equilibrium with lump-sum taxation, nominal income taxation creates a disincentive to locate in productive high-income regions. The deadweight loss due to locational inefficiencies is 0.18% of gross domestic product (GDP). We study real income taxation and equal real taxes as alternative tax systems. Both alternatives generate a geographic distribution of the population closer to the undistorted equilibrium, and hence with lower deadweight loss. In an extension of the analysis, we take into account payroll taxes. The existing regionally differentiated payroll taxes to the disadvantage of cities generate a deadweight loss of 0.22% of GDP in an economy with lump-sum income taxation. The two distortionary taxes interact and strengthen each other and the combined distortionary effect of income and payroll taxation in the Norwegian system is 0.46% of GDP. © Springer Verlag. This is the authors' accepted and refereed manuscript to the article. The final publication is available at https://link.springer.com/article/10.1007%2Fs10797-016-9430-3

We model a timing game in tax competition where the initial capital is unevenly endowed within the country and the tax policies are determined under a majority voting regime. The model is characterized by a novel feature: The decisive voter imports capital at the individual level, while the country exports it at the national level. The paper finds that governments endogenously choose to play a sequential-move game, which is unlikely to associate with full capital ownership in the tax competition literature.

We analyze the impact of locally dominant firms—i.e. firms that contribute a sizeable share to municipalities’ revenues—on local business tax rates. We argue that these firms have considerable political power locally even if they are not large in the regional or national perspective. These locally dominant firms can use their political power to voice their concerns directly vis-a-vis the local government—a channel of influence that is hardly available in municipalities with an atomistic structure of tax payers. We hypothesize that municipalities with locally dominant firms will set lower tax rates than municipalities in which tax-payers’ concentration is low. We test the impact of tax-payers’ concentration on local business tax rates using data from 423 municipalities in the German state Hesse between 1998 and 2005. The estimation technique accounts for spatial lags and autoregressive disturbances. Results support our central hypothesis: the higher the tax-payers’ concentration, the lower the municipal business tax rates.

Alternative economic theories yield dramatically different prescriptions for optimal capital taxation in small open economies. On the one hand, foreign firms, including those with investments that yield firm-specific above-normal returns, have a large number of alternative investment opportunities; this suggests that the supply of foreign direct investment is highly elastic, which implies that small open economies should avoid imposing any source-based taxes on capital income. On the other hand, governments invariably want to tax any above-normal returns earned by location-specific capital, especially if the returns accrue to foreigners, and to take full advantage of the potential revenue increase from any “treasury transfer” effect that arises due to residence-based tax systems with foreign tax credits, such as that utilized by the USA. These factors suggest that investment is highly inelastic with respect to capital taxation, so that source-based capital income taxation is desirable; indeed, in one special case, the capital income tax rate for a small open economy should equal the relatively high US tax rate. Moreover, this difficult trade-off is in practice complicated by numerous additional factors: deferral of unrepatriated profits and cross-crediting of foreign tax credits for the US multinationals, foreign direct investment from firms from countries that, unlike the USA, operate territorial systems, and the existence of opportunities for both international capital income shifting and labor income shifting. In this paper, we analyze optimal capital income taxation in a small open economy model that attempts to balance these conflicting factors.

Standard tax multipliers are a widespread feature of fiscal equalization systems. A simple theoretical model shows that actual tax multipliers respond positively to changes in standard tax multipliers. This theoretical prediction is tested empirically using data on municipalities in Germany. A quasi-experiment in the state of North Rhine-Westphalia is exploited to identify the incentive effect. The empirical results confirm that local business tax policy is shaped by standard tax multipliers. They provide a straightforward practical tool to avoid a race to the bottom in local business tax rates.

In this paper, we argue that, for a given overall level of labour income taxation, a more progressive tax schedule increases employment. From a theoretical point of view, higher progressivity increases overall employment through a wage moderating effect and also because employment of low-paid workers is more elastic to wages. We test these theoretical predictions on a panel of 21 OECD countries over 1998–2008. Controlling for the burden of taxation at the average wage, our estimates suggest that a more progressive tax schedule reduces the unemployment rate and increases the employment rate. These findings are confirmed when we account for the potential endogeneity of both average taxation and progressivity. Overall, our results suggest that policy-makers should not only focus on the detrimental effects of tax progressivity on in-work effort, but also consider the employment-enhancing effects.

Recent literature on bequest taxation has made a case for subsidizing bequests on efficiency grounds, with the rate of subsidy declining with the size of the bequest to equalize opportunities among inheritors. These results rely heavily on the fact that bequests benefit both the donor and the recipient, creating an externality that is not taken into account by donors. The double counting of the benefits of bequests is questionable on normative grounds. We study the consequences for bequest taxation of giving less than full social weight to the benefit to donors. We analyse a simple model of parents and children with different skills where parents differ in their preferences for bequests. The government implements nonlinear income taxes on both parents and children as well as a linear inheritance tax and gives differential linear bequest tax credits to donor parents based on income. The nonlinear income taxes take standard forms. The inheritance tax and bequest tax credits are of indeterminate absolute level and together determine the effective price of net bequests. This effective price plays both externality-correcting and redistributive roles. The optimal effective price will depend on the social weight given to donor benefits and the share of donors of a given skill type.

We experimentally study how receiving information about tax compliance of others affects individuals' occupational choices and subsequent evading decisions. In one treatment individuals receive information about the highest tax evasion rates of others in past experimental sessions with no such social information; in another treatment they receive information about the lowest tax evasion rates observed in the past sessions with no such social information. We observe an asymmetric effect of social information on tax compliance. Whereas examples of high compliance do not have any disciplining effect, we find evidence that examples of low compliance significantly increase tax evasion for certain audit probabilities. No major differences are found across countries.data source: lab experiment data, available from authors upon request

This paper examines the sensitivity of marginal tax reform analysis to changes in the underlying demand system. In particular, we analyse the sensitivity of results from Ahmad and Stern’s (J Publ Econ 25(3):259–298, 1984) marginal tax reform model to different specifications of Deaton and Muellbauer’s (Am Econ Rev 70(3):312–326, 1980) Almost Ideal Demand System (AIDS) and Banks et al.’s (Rev Econ Stat 79(4):527–539, 1997) Quadratic AIDS. Using Irish Household Budget Survey data, we show that tax reform results exhibit a low degree of sensitivity to changes in the underlying demand system. An adjustment for a mass of observed zero-expenditures in the data for certain goods produces most sensitivity in the tax reform results. Even in these cases, many of the tax reform recommendations remain constant. Including demerit good arguments in the tax reform model can substantially alter the tax reform recommendations relating to demerit goods. Notably though, when we include these arguments in the tax reform model, the results are particularly insensitive to changes in the underlying demand system.

Tax competition for capital has led to a trend where many countries levy lower taxes on interest income, often introducing differential taxation between interest and business income. This study analyzes the effect on firm debt usage. We exploit Germany's 2009 tax reform, which introduced a final withholding tax on interest income with a flat rate 18 percentage points below the unchanged tax rate on income from unincorporated businesses, as a quasi-experiment. The results, based on firm-level panel data, indicate that firms increase their leverage when the tax rate on interest income decreases, albeit to a small degree. The final publication is available at Springer via http://dx.doi.org/10.1007/s10797-015-9349-0.

We describe the preferred taxation regime in a small economy with uncertain institutional quality. We obtain that a preferential taxation regime in which taxes can be matched to the mobility of the tax base may be worse off than a non-preferential taxation regime in which taxes are constant across bases with distinct mobility. Since the small economy takes foreign taxes as given, our result is not driven by a downward pressure on revenues caused by unconstrained tax competition. It is instead related to the ability of a non-preferential taxation regime to credibly convey information about the institutional quality of the small economy. We present some empirical evidence which corroborates our results.

This discussion paper led to a publication in 'International Tax and Public Finance' . This paper analytically derives the conditions under which the slope of the tax reaction function is negative in a classical tax competition model. If countries maximize welfare, we show that a negative slope (reflecting strategic substitutability) occurs under relatively mild conditions. Simulations suggest that strategic substitutability occurs under plausible parameter configurations. The strategic tax response is crucial for understanding tax competition games, as well as for assessing the welfare effects of partial tax unions (whereby a subset of countries coordinate their tax rates). Indeed, contrary to earlier findings that have assumed strategic complementarity in tax rates, we show that partial tax unions might reduce welfare under strategic substitutability.

This paper aims to establish and explore the links between two threads in the public finance literature. One is the use of tax thresholds to partition taxpayers into those who are liable to pay tax and those who are not. The other is the notion of 'informality' as a central challenge for tax design and implementation. Several insights emerge. First, the results make clear that the term 'informal' as used in the literature is imprecise and can consequently be very misleading: the models reveal a range of compliant and non-compliant behaviors with very different welfare and rev- enue implications. Second, the various forms of behavior considered suggest optimal thresholds generally higher than would otherwise be the case, with quite complicated implications for the associated patterns of (non)-compliance. Third, when (as is real- istic) firms and individuals face multiple tax and non-tax obligations, the setting of optimal thresholds is considerably more complex.

This paper provides an example aimed at calculating the optimal inheritance tax in a model in which inheritances are used to finance investment in education. Two results are obtained: (1) The optimal inheritance tax schedule includes a threshold, estimated between 2.5 and 5.5 times per-capita GDP. This result holds for a Rawlsian social planner that maximizes the welfare of the poorest individual, who does not leave bequests. (2) Contrary to the result of a 100 % tax on pure accidental bequests, the optimal simulated tax rates are between 28 %, for the case of educational bequests, and 57 %, for the case where educational and accidental bequests interact. This range is in line with existing schedules in developed economies.

We provide a generalization and adaptation of the decomposition methodology by Pfahler (Bull Econ Res 42:121–129, 1990) and Lambert (The distribution and redistribution of income, 1st edn, 1989, The distribution and redistribution of income, 3rd edn, 2001), designed to assess the redistributive effect of personal income taxation. In particular, we generalize the methodology to several deductions, allowances, schedules or tax credits, making it suitable for real-world complex tax structures, especially dual income taxes. Additionally, we avoid the problem of sequentiality on the measurement of partial redistributive effects and also take into account the re-ranking effects of tax treatments not related to income. Finally we illustrate the utility of the methodology by carrying out an empirical analysis for the 2007 Spanish Personal Income Tax, which meant a shift from a quasi-comprehensive to a semi-dual income tax.

In this study, the optimal value of a tax on capital inflows is estimated so that private agents internalize the social costs of their borrowing decisions in an economy with financial constraints. A key feature of our model is that we provide a theoretical foundation to tax level differentiation by asset volatility. Using Colombian data for the 1996–2011 period (which includes the crisis of 1998–1999), we find the tax would be around 1.2 %.

In a recent paper Alesina et al. (2011) construct a model in which different labor supply elasticities for men and women emerge endogenously from intra-household bargaining. In this paper I explore the optimal tax implications of their model in an economy with both singles and couples and inequality across as well as within households. In the model, the welfare of married women can be improved by lowering taxes for single women. Moreover, if single men earn more than single women, the welfare of married women can alternatively be improved by a gender-neutral tax scheme which taxes singles at a higher rate. Because the government is concerned not only with equalizing utilities within families, but also with the redistribution between high income and low income households, gender-based adjustments in the income tax must be weighed against the welfare consequences of changing the progressivity of the tax system. I find that larger lump-sum transfers to women is always optimal. Interestingly, marginal tax rates, on the other hand, should be lower for women only if the exogenous bargaining power of men is moderate. The welfare gains of gender based taxation are sizable and the welfare gains of having tax instruments which depend on household composition are even larger.

We introduce cross-border shopping and indirect tax competition into a model of optimal taxation. The Atkinson–Stiglitz result that indirect taxation cannot improve the efficiency of information-constrained tax-transfer policies, and that indirect taxes should not be differentiated across goods, is shown to hold in this case even if countries are asymmetric. However, if the tax system must contain indirect taxation, differentiated indirect tax rates arise in the equilibrium and restricting differentiated indirect taxation can be welfare-increasing.

A modern Goods and Services Tax (GST) would do much to alleviate the problems of India’s current indirect tax system which is a serious impediment to the formation of a single common market and further economic growth. The Centre and the States should both have access to the full GST base, which means that the tax assignment issue (who should tax what?) should be separated from GST design aspects (what should be the precise base and rate structure?). It is not necessary or desirable to have a uniform GST for the Centre and the States. Neither is an integrated GST to tax transactions between States required. Last but not least, the system of taxation by classification and valuation should be replaced by a self-assessment system mainly monitored through checks upon books of account.

The partial revenue from each indirect tax and the total revenue from all indirect taxes on consumer goods are derived as functions of all commodity prices, the tax rates of each commodity, total expenditure and demographic variables using a complete demand system. Within this framework we define Dupuit curves, or Laffer curves, and analyze their existence and maximum points theoretically and empirically. The macro demand system is based on exact aggregation across all households in the economy, and on exact aggregation across commodities within a detailed non-homogeneous utility tree. An empirical application for Norway with 55 commodity groups is presented. For beer, wine, spirits and tobacco, consumers can choose among buying at home, cross-border shopping/ tax-free shopping and smuggling. These substitution possibilities increase substantially the price elasticities for these goods. The partial revenue from wine as function of the tax share on wine has a single maximum value close to the actual tax rate in Norway in 1999, conditioned on all the other exogenous variables. The total revenue as a function of the tax share on wine also has a single maximum value, larger than that for the partial revenue. The same results are valid for spirits. For beer and tobacco there is no revenue maximizing tax share.

In recent years tax havens and offshore financial centres have come under increasing political pressure to cooperate with other countries in matters of taxation and efforts to crowd back tax evasion and avoidance. As a result many tax havens have signed tax information exchange agreements (TIEAs). In order to comply with OECD standards tax havens are obliged to sign at least 12 TIEAs with other countries. This paper investigates how tax havens have chosen their partner countries. We ask whether they have signed TIEAs with countries to which they have strong economic links or whether they have systematically avoided doing this, so that information exchange remains ineffective. We analyse 565 TIEAs signed by tax havens in the years 2008–2011 and find that on average tax havens have signed more TIEAs with countries to which they have stronger economic links. Our analysis thus suggests that tax havens do not systematically undermine tax information exchange by signing TIEAs with irrelevant countries. However, this does not mean that they exchange information with all important partner countries.

This paper examines endogenous timing in an international tax competition model. Unlike existing studies, governments are assumed to decide not only tax rates but also whether they are set early or late. The Nash equilibrium provides four conclusions for alternative double tax allowances. First, tax deductions cause simultaneous tax competition, whereas tax credits yield sequential tax competition. Second, any double taxation relief would generate capital trade. Third, a credit system could maximize one country’s economic welfare but would lower another country’s economic welfare more than a deduction regime. Fourth, a home country’s government would choose credit regimes under a maximax rule, but select deduction methods under minimax and maximin rules, while all double tax allowances are indifferent to a host country. The findings resolve the question raised by Bond and Samuelson (Economic Journal 99:1099–1111, 1989) of why governments choose tax credits when tax deductions are clearly better. Namely, this paper shows that one country is better off but another is worse off with credits rather than deductions. Accordingly, we cannot clearly specify whether governments choose credit systems or deduction regimes. The possible double tax allowances employed by the governments depend on their own decision criterion.

We study tax competition when pollution matters. Most notably, we present a dynamic setting, where the supply of capital is endogenous. It is shown that tax competition may involve stricter environmental policy than the cooperative outcome. © 2012 The Author(s).

This paper derives an appropriate standard price that can be used by the tax authorities of a country for auditing transfer prices in multinational firms (MNFs) for the purpose of social welfare maximization of the country. We assume that the corporate tax rate in the host country, where MNFs undertake foreign direct investment to locate their manufacturing divisions, is lower than that in the home country. Our conclusion is that the tax authorities of the home country should not always force MNFs to hold down the transfer price through a too strict audit standard if it aims to maximize social welfare of the country in the long-run equilibrium. This result implies that tax authorities face a trade-off between consumer welfare and tax revenue when determining the standard price used for auditing. One notable implication is that the tax authorities should raise the upper-limit price allowed for internal transfers as the elasticity of substitution between brands for consumers decreases.

This paper incorporates the influence of interest groups into the asymmetric tax competition model to explain the phenomenon that small countries do not necessarily set lower capital tax rates than large countries. In addition to the efficiency effect considered by the standard model, which leads the smaller country to set a lower capital tax rate, this present paper also takes account of the political effect arising from lobbying. We show that the smaller country may face less downward political pressure. If the political effect outweighs the efficiency effect, then the smaller country sets a higher tax rate than the larger country. This result has several welfare implications, which are in contrast to the conventional consequences.

Many multinationals divert Foreign Direct Investment (FDI) through conduit countries that have a favorable tax treaty network, to avoid host country withholding taxes. This is referred to as tax treaty shopping. The Netherlands is the world’s largest conduit country; in 2009, multinationals held approximately €1,600 billion of FDI via the Netherlands. This paper uses microdata from Dutch Special Purpose Entities to analyze geographical patterns and structural determinants of FDI diversion. Regression analysis confirms that tax treaties are a key determinant of FDI routed through the Netherlands. The effect of tax treaties on FDI diversion partly arises from the reduction of dividend withholding tax rates, which provides strong evidence for tax treaty shopping.

This research examines capital income taxation for a loss averse investor under some acceptable in the literature reference levels relative to which are the changes in the level of wealth valued. Depending on the reference level, some results indicate that it could be possible for a capital income tax increase not to stimulate risk taking even if the tax code provides the attractive full loss offset provisions. However, risk taking can be stimulated if the investor interprets part of the tax as a loss instead as a reduced gain. Then investor becomes risk seeking and moves away from the discomfort zone of relative losses. This later response to taxation causes private risk taking to increase which is contrary to what evolves from assuming an expected utility model. Finally, a number of other reference standards are examined as well.

One of the main rationales for taxing consumption rather than income is that it is believed that consumption taxes discourage consumption, encourage savings, and thus generate higher economic growth. However, empirical evidence on the actual effectiveness of consumption taxes in stimulating savings is very limited. In this paper, we estimate the impact of a broad-based consumption tax, the value-added tax (VAT), on the aggregate consumption of fifteen European Union countries over the period 1961–2005. Our empirical results indicate, across a variety of estimation methods and specifications, that a one percentage point increase in the VAT rate leads to roughly a one percent reduction in the level of aggregate consumption in the short run and to a somewhat larger reduction in the long run.

Tax systems with separate taxation of wage and capital income, also called dual income tax systems, have gained relevance through the Mirrlees Review. Obviously, such tax systems are exposed to horizontal equity (HE) failures, or horizontal inequity (HI). HE and HI have a firm grip on assessment of fair tax policies, both from an academic point of view and in general public debate. The dual income tax system of Norway was modified by the tax reform of 2006 precisely because the previous schedule failed to deliver equal tax treatment of equals. This paper discusses the meaning and measurement of HI effects of dual income tax systems, and evaluates the development of HI for Norway over the time period 2000-2008 using micro data. A copula-based identification strategy efficiently establishes a framework for evaluations of HI over time. The dual income tax system and the early announcement of its impending revision during the period under examination created measurement problems which we had to account for by defining a new income concept for the empirical strategy. As expected, we find less HI in Norway after the reform of 2006.

In this paper we investigate how the possibility of (legal) tax avoidance affects the extent of (illegal) tax evasion and hence the shadow economy. We formulate a theoretical microeconomic model of household behavior in which households can participate in the official and in the shadow economy. Using comparative statics, we show that the complexity of the tax system affects participation in the shadow economy negatively, i.e. a more complex tax system with more possibilities of legal tax avoidance implies, ceteris paribus, a smaller labor supply in the shadow economy. In addition, we show that a reduction in the maximum admissible number of working hours in the official economy increases the labor supply in the shadow economy.

This is a pre-copyedited, author-produced PDF of an article accepted for publication in International Tax and Public Finance, following peer review. The final publication International Tax and Public Finance 2012, 19(1):5-24 is available at Springer via DOI: 10.1007/s10797-011-9185-9 . This paper reviews some central issues that arise in theorizing about tax evasion decisions and the hidden economy. It starts from the Allingham-Sandmo (1972) modelling of the tax evasion decision as a choice under uncertainty based on expected utility maximization and risk aversion. It goes on to discuss alternative specifications of the taxpayer’s preferences with particular regard to the explanation of the extensive margin, i.e. the decision on whether or not to engage in tax evasion. It extends the model to the case of variable labour supply with work in both official and black labour markets. It then considers the application of the theory to taxes on wealth and income from capital, indirect tax evasion and smuggling. It also includes a consideration of general equilibrium effects and of the problems that evasion causes for the theory of optimal income and commodity taxes. It concludes with a brief discussion of the implications of tax evasion for economic policy in the welfare state.

This paper provides a first step toward joint evaluation of taxation and financial reporting in the standard economic analyses of corporate behavior. It develops a framework that formalizes the idea that the attractiveness of some investment decisions is enhanced because they provide managers with discretion over the timing of taxable income and/or book income. It then examines from this perspective several current examples of tax and accounting issues.

This paper study how a change in specific and ad valorem taxes under nonlinear pricing affects tax incidence. We show that an increase in either tax rate leads to a higher usage fee for all consumers, whereas the fixed fee under reasonable assumptions will fall. Finally, the model shows that the presumption in favor of ad valorem taxes over specific taxes also holds under nonlinear pricing and incomplete market coverage.

This paper investigates corporate taxation under separate accounting (SA) and formula apportionment (FA) in a model with union wage bargaining and multi-national firms. Under SA, we find that increases in the corporate tax rate raise the wage level of domestic workers, while they lower the remuneration of foreign workers. The main insight emerging from a tax competition game is that the endogenous wage level gives rise to an ambiguous fiscal externality, which may dampen the race-to-the-bottom in corporate tax rates. A switch to a tax system with FA principles reverses the impact of corporate taxes on negotiated wages. While increases in the corporate tax rate reduce domestic wages, they raise the wage level of foreign workers. In a tax competition game, the endogenous wage level gives rise to a positive fiscal externality that enforces the race-to-the-bottom in corporate tax rates.

The European Union has long maintained an intention to move to the origin principle of taxation, but no progress has been made since the completion of the single market. The lack of progress seems surprising, given the significant support for the origin principle in the economic literature. However, there is a contrast between the European Union that contains countries of widely different sizes and productivity levels, and the theoretical literature that has focused on models with symmetrical countries. We extend the modelling of preferences over tax principles to incorporate asymmetries in efficiency and size. We show that asymmetry can cause disagreement among countries over tax principles to be sustained even with close economic integration. Large countries and inefficient countries are shown to prefer the origin principle. In contrast, small countries and efficient countries can have a preference for the destination principle. These results provide an insight into the political economy of the impasse in European Union tax policy.

In this paper, we investigate to what extent tax incentives are effective in attracting investment in Sub-Saharan Africa. We test the neo-classical investment theory prediction that tax incentives, by lowering the user cost of capital, raise investment. Next to tax incentives, we also estimate the impact on investment of other investment climate variables that are under direct control of the government, such as the transparency and complexity of the tax system, and the legal protection of foreign investors. In developing countries, these variables might be as important as or even more important than the tax variables themselves. Therefore, we analyze the policy changes in tax incentives and in the other investment climate variables for 12 CFA Franc Zone countries over the period 1994-2006. Because of their common currency (the CFA Franc) and common language (French) these countries constitute an exceptional basis of comparison to evaluate their 'policy experiments'. The use of panel data econometrics with fixed country and year effects allows us to isolate the impact of the policy changes on investment, as if it were a difference in differences analysis with multiple policy changes. We find no robust positive relationship between tax holidays and investment in the CFA Franc zone. However, increasing the number of legal guarantees for foreign investors and reducing the complexity of the tax system helps to attract investment.

This paper analyses the effect of observed food price changes on household consumption (welfare) in Tanzania and from this simulates the welfare effect attributable to tax (tariffs and VAT) reforms. The three rounds of the Tanzania Household Budget Survey (1991/92, 2000/01 and 2007) are used to apply Deaton’s method based on median unit values (prices) and household budget shares. The results indicate that real price increases over 1991–2007 have reduced welfare of the average household by 20 per cent of 1991 income, and the loss was fairly evenly distributed between the 1990s and 2000s. The welfare loss was much greater for the poor, especially the rural poor (a 27 per cent reduction), compared to the non-poor (in particular the urban non-poor, who suffered a five per cent loss). Although we cannot establish explicit links between tax reforms and domestic commodity price changes, to assess the extent to which welfare changes can be explained by tax reforms we simulate the effects of tax changes on domestic price changes. The simulation shows that tax reforms (tariff reductions) offset the welfare losses for all household groups, especially in the 1990s; although the differences were small, the urban poor benefit more in relative terms from tax reforms whereas the rural poor benefit least (the effect on the non-poor was similar irrespective of location).