Publication: Lying to the Taxman or Accepting a Helping Hand?: Evidence from a Novel Experiment on SMEs in Tanzania
Loading...
Date
2025-02-10
ISSN
Published
2025-02-10
Editor(s)
Abstract
This paper presents the results from a novel field experiment that examined the impact of in- creasing the presence of revenue authority officers on tax compliance and tax morale among small and medium-size enterprises in a lower-income country. The experiment was embedded in the implementation of a representative, face-to-face survey of SMEs across mainland Tanzania. An independent survey firm was accompanied by Tanzania Revenue Authority officers, who observed the interviews in a randomly selected set of urban and peri-urban wards. This translated into a temporary increase in the presence of tax officers throughout parts of the country. The findings indicate that an increase in tax officer presence did not have a significant overall impact on tax compliance and tax morale among SMEs, as measured using a combination of administrative and survey data. However, there were short-term increases in compliance in the largest city and sustained increases in tax morale in the rest of the country. A follow-up survey suggests that these results were likely driven by an increase in the perceived credibility of enforcement rather than meaningful increases in perceptions of facilitation and trust.
Link to Data Set
Citation
“Paul, Revocatus; Mdee, Ephraim; Fimbo, Massaga; Karver, Jonathan; Chaudhry, Zain; Hoy, Christopher. 2025. Lying to the Taxman or Accepting a Helping Hand?: Evidence from a Novel Experiment on SMEs in Tanzania. Policy Research Working Paper; 11062. © World Bank. http://hdl.handle.net/10986/42786 License: CC BY 3.0 IGO.”
Associated URLs
Associated content
Other publications in this report series
Publication The Macroeconomic Implications of Climate Change Impacts and Adaptation Options(Washington, DC: World Bank, 2025-05-29)Estimating the macroeconomic implications of climate change impacts and adaptation options is a topic of intense research. This paper presents a framework in the World Bank's macrostructural model to assess climate-related damages. This approach has been used in many Country Climate and Development Reports, a World Bank diagnostic that identifies priorities to ensure continued development in spite of climate change and climate policy objectives. The methodology captures a set of impact channels through which climate change affects the economy by (1) connecting a set of biophysical models to the macroeconomic model and (2) exploring a set of development and climate scenarios. The paper summarizes the results for five countries, highlighting the sources and magnitudes of their vulnerability --- with estimated gross domestic product losses in 2050 exceeding 10 percent of gross domestic product in some countries and scenarios, although only a small set of impact channels is included. The paper also presents estimates of the macroeconomic gains from sector-level adaptation interventions, considering their upfront costs and avoided climate impacts and finding significant net gross domestic product gains from adaptation opportunities identified in the Country Climate and Development Reports. Finally, the paper discusses the limits of current modeling approaches, and their complementarity with empirical approaches based on historical data series. The integrated modeling approach proposed in this paper can inform policymakers as they make proactive decisions on climate change adaptation and resilience.Publication From Patriarchy to Policy(Washington, DC: World Bank, 2025-05-29)Legal institutions play an important role in shaping gender equality in economic domains, from inheritance to labor markets. But where do gender equal laws come from? Using cross-country data on social norms and legal equality, this paper investigates the socio-cultural roots of gender inequity in the legal system and its implications for female labor force participation. To identify the impact of social norms, the analysis uses an empirical strategy that exploits pre-modern differences in ancestral patriarchal culture as an instrument for present-day gender norms. The findings show that ancestral patriarchal culture is a strong predictor of contemporary norms, and conservative social norms are associated with more gender inequality in the de jure legal framework, the de facto implementation of laws, and the labor market. The paper presents evidence for a political selection mechanism linking norms to laws: countries with more conservative norms elect political leaders who are more hostile to gender equality, who then pass less progressive legislation. The results highlight the cultural roots and political drivers of legalized gender inequality.Publication Geopolitics and the World Trading System(Washington, DC: World Bank, 2024-12-23)Until the beginning of this century, the GATT/WTO system worked. Economic research provided a compelling explanation. It showed that if governments maximize the well-being of their own countries broadly defined, GATT/WTO principles would facilitate mutually beneficial cooperation over their trade policy choices. Now heightened geopolitical rivalry seems to have undermined the WTO. A simple transposition of the previous rationalization suggests that geopolitics and trade cooperation are not compatible. The paper shows that this is only true if rivalry eclipses any consideration of own-country well-being. In all other circumstances, there are gains from trade cooperation even with geopolitics. Furthermore, the WTO’s relevance is in question only if it adheres too rigidly to its existing rules and norms. Through measured adaptation to the geopolitical imperative, the WTO can continue to thrive as a forum for multilateral trade cooperation in the age of geopolitics.Publication Rethinking Fiscal Policies(Washington, DC: World Bank, 2025-05-27)This paper examines the redistributive impact of fiscal policy—specifically taxes and transfers—on poverty and inequality in eight countries in the Middle East and North Africa: the Arab Republic of Egypt, Djibouti, the Islamic Republic of Iran, Iraq, Jordan, Morocco, Tunisia, and the West Bank and Gaza. Utilizing the Commitment to Equity framework, the analysis evaluates how fiscal interventions alter income distribution across these diverse national contexts. The results indicate that direct cash transfers and social assistance programs are generally effective in reducing poverty and shielding vulnerable populations, while in-kind benefits—particularly in education and healthcare—significantly contribute to mitigating income inequality. In contrast, generalized subsidies, especially in the energy sector, are fiscally burdensome and largely regressive, offering limited equity gains. Indirect taxes, although important for revenue generation, often exacerbate income disparities. The study underscores the need for comprehensive fiscal reforms, including the expansion of well-targeted transfers, adoption of progressive taxation, and reallocation of inefficient subsidies toward investments in human capital. Successful initiatives, such as Egypt’s Takaful and Karama and Jordan’s Takaful and bread subsidy compensation programs, illustrate scalable models of effective redistribution. Moreover, the Islamic Republic of Iran’s progressive tax policies highlight viable pathways to equitable revenue mobilization. Strengthening investment in education and health is essential for promoting long-term equity, enhancing upward mobility, and supporting inclusive and sustainable development across the region.Publication Yield Gains from Balancing Fertilizer Use(Washington, DC: World Bank, 2025-05-29)As with most agricultural inputs, the optimal use of fertilizer leverages the production complementarities between different types of nutrients. Wide variation in the intensity of nutrient application rates suggests there are potentially large productivity gains to be had from rebalancing fertilizer use across nutrient types even under a fixed expenditure budget. Using detailed information on a large sample of rice fields across three states in eastern India, this paper investigates whether a more balanced use of fertilizer—measured as the ratio of potash to nitrogen applied to a field—can lead to higher yields and revenues. To address the endogeneity of fertilizer application decisions, the analysis exploits the fact that nitrogen-based fertilizers demanded by Indian farmers are mostly produced domestically in a limited number of manufacturing plants, while all potash-based fertilizers must be imported by ship from abroad. Instrumenting for the ratio of potassium-to-nitrogen fertilizer applied on a field with the relative travel distances between farmers’ villages and both the nearest urea production plant and the nearest international port, the paper estimates the impact of more balanced fertilizer use on yields and revenues. The estimates show that at median levels of fertilizer use, and keeping the level of expenditure on fertilizers constant, rebalancing fertilizer application choices such that the potassium-to-nitrogen ratio of fertilizer is doubled would lead to a 4.8 percent increase in yield.
Journal
Journal Volume
Journal Issue
Collections
Related items
Showing items related by metadata.
Publication Trade-offs in the Design of Simplified Tax Regimes(Washington, DC: World Bank, 2024-09-19)This paper provides novel evidence of the trade-offs policy makers face when designing simplified tax regimes for small businesses. First, it provides a comprehensive stocktaking of the main features of these regimes across Sub-Saharan Africa: they are adopted by two-thirds of countries, but their design varies greatly. Second, it draws on administrative and survey data for a thorough examination of a specific simplified tax regime. This analysis shows most small businesses lack knowledge about design features, such as the existence of a minimum exemption threshold, but they react strongly to increases in tax rates by lowering their declared turnover. Finally, the paper presents the results of an experiment that encourages taxpayers to pay fixed amounts—a potential alternative design of a simplified tax regime that aims for a better balance of the trade-offs facing policy makers. The findings show that providing simple guidance about how much small businesses with similar characteristics typically pay in taxes can increase revenue, but this reduces equity among taxpayers.Publication Nudging in the Time of the Coronavirus(Washington, DC: World Bank, 2022-03-07)This paper presents the results of a randomized controlled trial testing the effectiveness of taxpayer communications informed by behavioral science in inducing business payroll tax compliance at the onset of the COVID-19 pandemic. In March 2020, an experimental tax trial targeting 5,423 firms was implemented, coinciding with the national lockdown due to the global pandemic. The Albanian tax authority sent postal letters to employers and selected employees highlighting a suspicion that wages were under-declared to avoid personal income tax withholding. Employers and employees suspected of under-declaring were randomly assigned to receive a soft-tone letter (highlighting the social importance of contributing through taxes), a strong-tone letter (highlighting the penalties associated with under-declaring), or none (forming a control group against which the impact of receiving the letters could be estimated). For employers receiving soft-tone letters, the study finds large, statistically significant increases on subsequent payroll declarations (by as much as 10 percent relative to the control group), which gradually attenuate over the following six months. No statistically significant effects are found for letters sent to employees or strong-tone letters. The findings highlight (i) the importance of framing of communications as well as the importance of smart selection of letter recipients for taxpayer communication campaigns, (ii) which type of taxpayer communications were most effective in the context of the COVID-19 pandemic, and (iii) the role that randomized controlled trials and behavioral science can play in strengthening the effectiveness of government policy, particularly for public revenue mobilization.Publication A Helping Hand or the Long Arm of the Law? Experimental Evidence on What Governments Can Do to Formalize Firms(World Bank, Washington, D.C., 2013-05)Many governments have spent much of the past decade trying to extend a helping hand to informal businesses by making it easier and cheaper for them to formalize. Much less effort has been devoted to raising the costs of remaining informal, through increasing enforcement of existing regulations. This paper reports on a field experiment conducted in Belo Horizonte, Brazil, in order to test which government actions work in getting informal firms to register. Firms were randomized to a control group or one of four treatment groups: the first received information about how to formalize; the second received this information and free registration costs along with the use of an accountant for a year; the third group was assigned to receive an enforcement visit from a municipal inspector; while the fourth group was assigned to have a neighboring firm receive an enforcement visit to see if enforcement has spillovers. The analysis finds zero or negative impacts of information and free cost treatments, and a significant but small increase in formalization from inspections. Estimates of the impact of actually receiving an inspection give a 21 to 27 percentage point increase in the likelihood of formalizing. The results show most informal firms will not formalize unless forced to do so, suggesting formality offers little private benefit to them. But the tax revenue benefits to the government of bringing firms of this size into the formal system more than offset the costs of inspections.Publication Giving Sisyphus a Helping Hand(World Bank, Washington, DC, 2018-03)Regulatory impact assessment is a tool used by governments to support evidence-based and coordinated policy making. This paper contributes to the debate on regulatory impact assessment in developing countries by addressing the lack of a systematic account of reforms, and the lack of a comprehensive explanatory account of reform outcomes. The study first maps developing countries' regulatory impact assessment reforms between 2001 and 2016. In total, 60 reforms are identified. Reform design is analyzed by measuring adherence to six internationally recognized "good practices." The study then assesses whether the reforms -- two years or more after they were launched -- led to functioning regulatory impact assessment systems. Of the 60 reforms, 20 led to functional systems within two years of the conclusion of the reform. Three reforms were too recent to be assessed. The study shows that adherence to good practices is a necessary but not sufficient condition for early success. Among the six good practices, two are shown to be particularly decisive for the success of regulatory impact assessment reforms, namely, formal integration of regulatory impact assessment in policy making and the presence of a regulatory oversight unit. The second part of the study analyzes regulatory impact assessment reforms that did not produce early success despite adhering to good practices. The study tests several hypothetical reasons for slow developments. It points to the importance of donor flexibility and patience and the need for building reform constituencies inside and outside government. The traditional orthodoxy of regulatory impact assessment reforms as an extension of red tape reduction is challenged. The paper finally presents several possible policy implications of the findings.Publication A Helping Hand or the Long Arm of the Law?(Published by Oxford University Press on behalf of the World Bank, 2016-01)We conducted a field experiment in Belo Horizonte, Brazil to test which government actions work to encourage informal firms to register. We find zero or negative impacts of information and free cost treatments and a significant but small increase in formalization from inspections. The local average treatment effect estimates of the inspection impact are larger, providing a 21 to 27 percentage point increase in the likelihood of formalizing. The results show that most informal firms will not formalize unless forced to do so, suggesting that formality offers little private benefit to these firms.
Users also downloaded
Showing related downloaded files
Publication Africa's Future, Africa's Challenge : Early Childhood Care and Development in Sub-Saharan Africa(Washington, DC : World Bank, 2008)This book seeks to achieve a balance, describing challenges that are being faced as well as developments that are underway. It seeks a balance in terms of the voices heard, including not just voices of the North commenting on the South, but voices from the South, and in concert with the North. It seeks to provide the voices of specialists and generalists, of those from international and local organizations, from academia and the field. It seeks a diversity of views and values. Such diversity and complexity are the reality of Sub-Saharan Africa (SSA) today. The major focus of this book is on SSA from the Sahel south. Approximately 130 million children between birth and age 6 live in SSA. Every year 27 million children are born, and every year 4.7 million children under age 5 die. Rates of birth and of child deaths are consistently higher in SSA than in any other part of the world; the under-5 mortality rate of 163 per 1,000 is twice that of the rest of the developing world and 30 times that of industrialized countries (UNICEF 2006). Of the children who are born, 65 percent will experience poverty, 14 million will be orphans affected by HIV/AIDS directly and within their families and one-third will experience exclusion because of their gender or ethnicity.Publication Supporting Youth at Risk(World Bank, Washington, DC, 2008)The World Bank has produced this policy Toolkit in response to a growing demand from our government clients and partners for advice on how to create and implement effective policies for at-risk youth. The author has highlighted 22 policies (six core policies, nine promising policies, and seven general policies) that have been effective in addressing the following five key risk areas for young people around the world: (i) youth unemployment, underemployment, and lack of formal sector employment; (ii) early school leaving; (iii) risky sexual behavior leading to early childbearing and HIV/AIDS; (iv) crime and violence; and (v) substance abuse. The objective of this Toolkit is to serve as a practical guide for policy makers in middle-income countries as well as professionals working within the area of youth development on how to develop and implement an effective policy portfolio to foster healthy and positive youth development.Publication Ten Steps to a Results-Based Monitoring and Evaluation System : A Handbook for Development Practitioners(Washington, DC: World Bank, 2004)An effective state is essential to achieving socio-economic and sustainable development. With the advent of globalization, there are growing pressures on governments and organizations around the world to be more responsive to the demands of internal and external stakeholders for good governance, accountability and transparency, greater development effectiveness, and delivery of tangible results. Governments, parliaments, citizens, the private sector, Non-governmental Organizations (NGOs), civil society, international organizations, and donors are among the stakeholders interested in better performance. As demands for greater accountability and real results have increased, there is an attendant need for enhanced results-based monitoring and evaluation of policies, programs, and projects. This handbook provides a comprehensive ten-step model that will help guide development practitioners through the process of designing and building a results-based monitoring and evaluation system. These steps begin with a 'readiness assessment' and take the practitioner through the design, management, and importantly, the sustainability of such systems. The handbook describes each step in detail, the tasks needed to complete each one, and the tools available to help along the way.Publication World Development Report 2017(Washington, DC: World Bank, 2017-01-30)Why are carefully designed, sensible policies too often not adopted or implemented? When they are, why do they often fail to generate development outcomes such as security, growth, and equity? And why do some bad policies endure? This book addresses these fundamental questions, which are at the heart of development. Policy making and policy implementation do not occur in a vacuum. Rather, they take place in complex political and social settings, in which individuals and groups with unequal power interact within changing rules as they pursue conflicting interests. The process of these interactions is what this Report calls governance, and the space in which these interactions take place, the policy arena. The capacity of actors to commit and their willingness to cooperate and coordinate to achieve socially desirable goals are what matter for effectiveness. However, who bargains, who is excluded, and what barriers block entry to the policy arena determine the selection and implementation of policies and, consequently, their impact on development outcomes. Exclusion, capture, and clientelism are manifestations of power asymmetries that lead to failures to achieve security, growth, and equity. The distribution of power in society is partly determined by history. Yet, there is room for positive change. This Report reveals that governance can mitigate, even overcome, power asymmetries to bring about more effective policy interventions that achieve sustainable improvements in security, growth, and equity. This happens by shifting the incentives of those with power, reshaping their preferences in favor of good outcomes, and taking into account the interests of previously excluded participants. These changes can come about through bargains among elites and greater citizen engagement, as well as by international actors supporting rules that strengthen coalitions for reform.Publication World Development Report 1984(New York: Oxford University Press, 1984)Long-term needs and sustained effort are underlying themes in this year's report. As with most of its predecessors, it is divided into two parts. The first looks at economic performance, past and prospective. The second part is this year devoted to population - the causes and consequences of rapid population growth, its link to development, why it has slowed down in some developing countries. The two parts mirror each other: economic policy and performance in the next decade will matter for population growth in the developing countries for several decades beyond. Population policy and change in the rest of this century will set the terms for the whole of development strategy in the next. In both cases, policy changes will not yield immediate benefits, but delay will reduce the room for maneuver that policy makers will have in years to come.