1.1 Introduction
Taxation is defined as a compulsory levy imposed by the government on individuals and businesses in order to generate revenue for public expenditure and economic development (Musgrave & Musgrave, 1989). Tax evasion is the illegal concealment of income or misrepresentation of financial information to reduce tax liability, while tax avoidance is the lawful use of tax rules and regulations to minimize tax obligations (OECD, 2019). Both practices have significant implications for the economic development of any nation, especially in developing economies where revenue generation is critical for public sector financing. Economic development refers to the sustained improvement in the economic well being and quality of life of a population through increased productivity, infrastructure development, and improved access to essential services. Effective tax systems are essential for achieving this development because they provide governments with the financial capacity to invest in social and economic infrastructure (Todaro & Smith, 2015).
This chapter will address the background information that motivated this study, the challenges that prompted it, its aim, and its objectives as a preface to subsequent sections of the study. Additional factors include the study's significance, scope, limitations, research questions and hypotheses, and the definition of technical terms.
1.2 Background of Study
Taxation has long been recognized as a fundamental instrument for financing government expenditure and promoting economic development. According to Musgrave and Musgrave (1989), taxation is a compulsory levy imposed by the government on individuals and corporate organizations to generate revenue required for the provision of public goods and services. Over time, taxation has evolved beyond revenue generation to become a key tool for redistribution of income, economic stabilization, and resource allocation within an economy.
Tanzi (2017) stated that, tax systems in both developed and developing economies play a central role in shaping fiscal capacity and determining the extent to which governments are able to meet developmental goals. Tanzi reported that efficient tax administration enhances revenue mobilization, while weak tax structures create opportunities for leakages such as tax evasion and tax avoidance. These leakages reduce the fiscal space available for governments to invest in infrastructure, healthcare, education, and other development oriented sectors.
OECD (2019), tax evasion is the illegal non-payment or underreporting of income, while tax avoidance refers to the legal exploitation of loopholes in tax laws to minimize tax liabilities. OECD affirmed that although tax avoidance is technically legal, it undermines the equity and fairness of tax systems, while tax evasion directly violates tax laws and erodes government revenue. In many developing countries, both practices are widespread due to weak enforcement mechanisms, corruption, and limited administrative capacity (OECD, 2019).
According to Bird and Zolt (2008), developing economies face significant challenges in tax collection due to large informal sectors and inadequate institutional frameworks. Bird and Zolt stated that the presence of a large informal economy makes it difficult for tax authorities to accurately assess taxable income, thereby increasing opportunities for evasion. They further contended that when governments fail to effectively broaden the tax base, they become overly dependent on a narrow group of taxpayers, which increases inequality and reduces compliance motivation.
Slemrod and Yitzhaki asserted that individuals and firms often engage in rational economic behavior when they seek to minimize tax liabilities, especially when enforcement is weak and penalties are low. This behavior, however, leads to distortions in economic decision making and reduces the overall efficiency of the tax system. According to Fuest and Riedel (2009), tax evasion and avoidance are particularly problematic in developing countries where fiscal institutions are still evolving. They affirmed that multinational corporations often engage in profit shifting and aggressive tax planning strategies, thereby reducing taxable income in host countries. This practice significantly affects domestic revenue generation and limits the ability of governments to finance sustainable development projects.
Todaro and Smith (2015), economic development involves sustained improvements in income levels, living standards, and structural transformation of an economy. They contended that adequate public revenue is essential for achieving these objectives, as it enables governments to invest in human capital development, infrastructure, and poverty reduction programs. When tax evasion and avoidance reduce available revenue, economic development becomes constrained and uneven.
Ola (2001) affirmed that, the post colonial tax system in Nigeria and similar economies was characterized by structural weaknesses, including narrow tax bases and poor enforcement mechanisms. According to PwC (2022), modern globalization and digitalization have further complicated tax administration, as economic activities increasingly occur across borders and online platforms. PwC stated that while digital economies present new opportunities for revenue generation, they also create new avenues for tax avoidance through transfer pricing and base erosion strategies.
In developing countries such as Nigeria, tax evasion and avoidance remain major constraints to economic development. According to the Federal Inland Revenue Service (FIRS, 2023), revenue losses due to non compliance significantly reduce the government's ability to fund capital projects and social programs. This study is set against the backdrop of the persistent challenges posed by tax evasion and tax avoidance and their implications for economic development.
1.3 Statement of Problems
Tax evasion and tax avoidance are persistent fiscal challenges that affect the ability of governments to generate adequate revenue for sustainable economic development. Tax evasion is the illegal non payment or underreporting of taxable income, while tax avoidance involves the use of legal loopholes to reduce tax liability (OECD, 2019). In many developing economies, these practices weaken public revenue systems and reduce the capacity of government to fund infrastructure, education, healthcare, and other essential services that support economic development (Tanzi, 2017).
In many economies, weak tax administration systems, lack of transparency, and poor enforcement structures are major factors that encourage tax evasion and avoidance. These issues reduce government revenue mobilization and increase dependence on external borrowing, which in turn places additional pressure on national debt sustainability. The consequence is a slow rate of economic development, as limited fiscal resources restrict productive public investment (Bird & Zolt, 2008). It is against the backdrop that this study seeks to address these problems by evaluating the effect of tax evasion and tax avoidance on economic development.
1.4 Aim and Objectives of Study
The aim of this study is to assess the effect of tax evasion and tax avoidance on economic development in Nigeria. In achieving this aim, the following specific objectives were laid out as follows:
- Examine the impact of tax evasion on government revenue generation.
- Analyze the effect of tax avoidance on tax compliance levels.
- Determine the relationship between tax evasion and economic development.
- Assess how tax avoidance affects public sector financing.
- Evaluate measures used to reduce tax evasion and tax avoidance in Nigeria.
1.5 Research Questions
Based on the stated objectives, the specific research questions for the study are stated below as follows:
- what is the impact of tax evasion on government revenue generation
- how does tax avoidance affect tax compliance levels
- what is the relationship between tax evasion and economic development
- how does tax avoidance influence public sector financing
- what measures are used to reduce tax evasion and tax avoidance in Nigeria
1.6 Research Hypothesis
In order to pursue the objective of this study, the following generalized statements have been designed to guide and aids in obtaining the result for the experiment to be conducted. For this work, the null hypothesis will be represented with H0 while the alternative hypothesis will be represented with hypothesis H1.
Hypothesis 1
- H0: Tax evasion has no significant effect on government revenue generation in Nigeria
- H1: Tax evasion has a significant effect on government revenue generation in Nigeria
Hypothesis 2
- H0: Tax avoidance has no significant effect on tax compliance levels in Nigeria
- H1: Tax avoidance has a significant effect on tax compliance levels in Nigeria
Hypothesis 3
- H0: There is no significant relationship between tax evasion and economic development in Nigeria
- H1: There is a significant relationship between tax evasion and economic development in Nigeria
Hypothesis 4
- H0: Tax avoidance has no significant effect on public sector financing in Nigeria
- H1: Tax avoidance has a significant effect on public sector financing in Nigeria
Hypothesis 5
- H0: Existing measures have no significant effect on reducing tax evasion and tax avoidance in Nigeria
- H1: Existing measures have a significant effect on reducing tax evasion and tax avoidance in Nigeria
1.7 Significance of Study
The outcome of this research will support the Federal Inland Revenue Service in strengthening compliance monitoring systems and improving tax enforcement efficiency. Also, the study will help policymakers understand how reduced tax revenue affects public infrastructure funding and economic development outcomes.
Furthermore, the findings will assist international development partners in assessing Nigeria's fiscal sustainability and revenue mobilization capacity.
Lastly, the research outcome will provide academic institutions with updated empirical evidence for further research in taxation and public finance.
1.8 Scope and Limitations of the Study
The scope of this study is limited to Lagos State, Nigeria, focusing on tax evasion, tax avoidance, and their impact on economic development using data from the Federal Inland Revenue Service (FIRS).
The study is limited to available secondary and primary data collected from tax officials, business operators, and published fiscal reports within the study area.
1.9 Definition of Terms
Tax Evasion:
Tax evasion refers to the illegal practice of intentionally avoiding paying taxes owed to the government by underreporting income, inflating deductions, or hiding money in offshore accounts (Schneider, 2020).
Tax Avoidance:
Tax avoidance refers to the legal use of tax laws and loopholes to reduce tax liabilities through strategic financial planning (Slemrod, 2019). Unlike tax evasion, tax avoidance does not involve illegal activities but may still be seen as unethical if it exploits gaps in tax laws to minimize contributions to the national revenue.
National Budget:
The national budget is a financial plan that outlines the government's projected revenue and expenditure over a specific period, usually a fiscal year. It serves as a tool for managing public funds and allocating resources to various sectors such as education, healthcare, and infrastructure development (Fasina, 2018). The national budget is critical for national economic planning and policy implementation.
Government Revenue:
Government revenue refers to the income generated by the government, primarily from taxes, fees, fines, and grants, which is used to fund government operations and development projects (Ogunleye, 2020). Tax evasion and avoidance directly reduce this revenue, leading to a shortfall in the national budget.
Tax Compliance:
Tax compliance refers to the adherence of individuals and businesses to the tax laws of a country, ensuring that all taxes owed are paid on time and in full (Smith & O'Hara, 2021).
Fiscal Deficit:
A fiscal deficit occurs when a government's total expenditures exceed its total revenue, excluding borrowing. This situation can arise due to a shortfall in tax collections caused by tax evasion and avoidance, ultimately affecting the government's ability to fund essential services (Adeyemi, 2022).
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