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IMPACT OF TAXATION ON REVENUE GENERATION IN NIGERIA.
Abstract
This study examined the impact of taxation on revenue generation in Nigeria. A cross-sectional survey research design was adopted, and a structured questionnaire was used to collect data from a sample of 333 respondents. The data collected was analyzed using SPSS27, and t-tests were employed to test the hypotheses stated in the study. The findings indicated that while the Nigerian tax system was considered moderately effective in generating revenue, there were significant challenges hindering efficient tax collection. Key challenges identified included corruption among tax officials, lack of public awareness regarding tax obligations, inefficient tax administration, and the prevalence of informal businesses. The study also highlighted that recent tax reforms had contributed positively to improving revenue generation, encouraging higher compliance, and enhancing the monitoring and enforcement of tax regulations. However, the reforms were seen to have had a more pronounced effect on large corporations compared to small businesses. The hypotheses were tested through one-sample t-tests, and the results showed that taxation had a significant relationship with revenue generation, tax collection challenges had a notable impact on revenue, and tax reforms were effective in increasing government revenue. Based on these findings, the study concluded that addressing the identified challenges and strengthening the impact of tax reforms were essential for improving revenue generation in Nigeria. Recommendations were made to enhance public awareness, address corruption, improve tax administration, and ensure that reforms benefit both large and small businesses.
CHAPTER ONE
INTRODUCTION
1.1 Background to the Study
Taxation remains one of the most sustainable sources of government revenue globally. It serves not only as a mechanism for raising public funds but also as a powerful tool for promoting wealth redistribution, influencing consumption patterns, and ensuring macroeconomic stability (Bird & Zolt, 2023). In both developed and developing economies, efficient tax systems have been instrumental in financing infrastructure development, enhancing social welfare, and supporting governance structures. However, in Nigeria, despite the existence of various tax policies and frameworks, the contribution of taxation to revenue generation is still suboptimal.
Nigeria operates a complex tax system with multiple layers of taxation and overlapping authorities. The system is structured across the three tiers of government—federal, state, and local—each endowed with specific tax powers (Federal Ministry of Finance, 2020). At the federal level, taxes such as Company Income Tax (CIT), Petroleum Profit Tax (PPT), Value Added Tax (VAT), and Customs Duties are administered primarily by the Federal Inland Revenue Service (FIRS). At the state level, the State Boards of Internal Revenue (SBIR) are responsible for collecting Personal Income Tax and other levies, while local governments collect rates and minor taxes within their jurisdictions (Musa et al., 2021).
Historically, Nigeria’s fiscal structure has been heavily reliant on oil revenue. The overdependence on oil has exposed the country to revenue volatility due to fluctuations in global oil prices. Consequently, this has necessitated an urgent diversification of the national revenue base through improved taxation (Akhor et al., 2022). The sharp fall in oil prices in recent years, particularly from 2014 onwards, brought to light the fragility of Nigeria’s mono-economic model and reawakened interest in strengthening the tax system. The government, through initiatives such as the Voluntary Assets and Income Declaration Scheme (VAIDS), sought to enhance voluntary tax compliance and broaden the tax base (Appah, 2023).
Despite these efforts, Nigeria continues to record a significantly low tax-to-GDP ratio, which ranges between 6% and 8%, far below the African average of 15%–20% (Gwa & Kase, 2018). This statistic reflects deep-rooted structural and institutional inefficiencies, including poor tax administration, widespread tax evasion, and lack of political will to enforce compliance. For instance, inadequate technological infrastructure and data integration across tax authorities hinder effective tracking of taxable entities and income (Jonathan, 2022). Moreover, the lack of synergy between tax authorities and other revenue-generating agencies further exacerbates the inefficiencies in tax collection and utilization.
The informal sector, which constitutes over 60% of Nigeria’s economy, presents another significant challenge to revenue generation. This sector, consisting of small-scale businesses, artisans, and traders, largely operates outside the formal tax net. Efforts to capture this segment have been met with resistance due to the lack of proper documentation, low financial literacy, and the fear of harassment by tax officials (Ocheni, 2020). Consequently, a substantial portion of potential tax revenue is lost annually, undermining the government’s ability to meet developmental objectives.
Additionally, public perception of taxation in Nigeria is largely negative. There is a pervasive belief among citizens that tax revenues are mismanaged or embezzled by public officials (Atabor, 2019). This perception breeds apathy, non-compliance, and, in some cases, outright resistance to tax payment. Inadequate service delivery, poor infrastructure, and corruption have all contributed to the erosion of public trust in the tax system (Ajala, 2023). For taxation to gain legitimacy and support from the populace, there must be visible evidence of tax revenue being channeled toward public goods and services.
The government has also undertaken legislative reforms aimed at improving tax administration and compliance. For instance, the Finance Act of 2021 introduced changes to tax laws to address ambiguities, widen the tax base, and incorporate digital businesses into the tax net (Moses, 2019). Similarly, the adoption of the Integrated Tax Administration System (ITAS) and the implementation of electronic filing systems have sought to reduce human interface and improve transparency (Joy, 2022). While these reforms mark a step in the right direction, their effectiveness remains debatable due to lingering challenges in enforcement and implementation.
Furthermore, the introduction of the Tax Identification Number (TIN) as a compulsory requirement for banking and business transactions was aimed at increasing the tax net and reducing evasion. Although the TIN system has led to the registration of more taxpayers, its impact has been limited by poor awareness and inadequate sensitization campaigns (Friday, 2021). Many taxpayers are still unaware of their tax obligations, and tax education remains insufficient in schools and public discourse.
Corporate tax compliance is another area of concern. Many companies engage in aggressive tax avoidance schemes, exploiting legal loopholes and benefiting from weak enforcement mechanisms (Adebayo et al., 2022). Multinational corporations, in particular, are known to shift profits across borders to reduce tax liabilities, a practice that significantly erodes Nigeria’s revenue base (Adegbite, 2023). Combating such practices requires not only domestic policy reforms but also international cooperation and capacity building among tax administrators.
Revenue mobilization through taxation is essential for achieving Nigeria’s economic and social development goals. As public expenditure needs continue to grow, especially in areas such as education, health care, security, and infrastructure, there is increasing pressure on government to improve internally generated revenue. According to Appah (2021), effective tax administration backed by political will, technological innovation, and robust enforcement is crucial for enhancing revenue generation. Moreover, improving the professionalism and accountability of tax officials can also enhance compliance and public confidence in the system.
Another pressing concern is the need to strengthen inter-agency collaboration and data sharing to facilitate tax intelligence and compliance tracking. Integrating tax databases with those of banks, the Corporate Affairs Commission (CAC), and the National Identity Management Commission (NIMC) would allow for a more holistic view of taxpayer profiles (Ali, 2019). This would enable the FIRS and SBIRs to trace income sources, detect discrepancies, and ensure appropriate tax assessments and collections.
Transparency and accountability in the utilization of tax revenue are paramount in promoting a tax-compliant culture. Citizens are more likely to comply when they perceive that tax funds are being used judiciously for development purposes (Frank, 2020). Introducing participatory budgeting processes and regularly publishing audited financial statements can help bridge the trust deficit between tax authorities and the public. As emphasized by Emmanuel (2010), tax reforms must go hand-in-hand with governance reforms to yield the desired outcomes.
1.2 Statement of the Problem
Despite various tax reforms and policy interventions in Nigeria, the country continues to grapple with low revenue generation from taxation. The tax-to-GDP ratio in Nigeria remains among the lowest in sub-Saharan Africa, hovering between 6% and 8%, compared to the regional average of 15%–20% (Gwa & Kase, 2018). This discrepancy suggests fundamental weaknesses in the nation’s tax system, such as administrative inefficiencies, poor enforcement, inadequate taxpayer education, and limited coverage of the informal sector (Appah, 2023). Previous studies have explored some of these issues, but many have not holistically examined the interconnectedness of tax policy effectiveness, administrative structure, public perception, and actual revenue performance in a single framework.
In particular, existing research often fails to adequately investigate the persistent disconnect between taxpayer compliance and government accountability. While studies by Atabor (2019) and Ajala (2023) acknowledge the influence of public mistrust on tax evasion, few offer in-depth evaluations of how transparency and the visible utilization of tax revenue influence voluntary compliance. Additionally, although reforms like VAIDS and the Finance Act have been introduced (Moses, 2019), empirical assessments of their actual impact on revenue growth remain limited. Many studies focus on theoretical implications without offering measurable insights into the practical outcomes of such reforms.
Furthermore, most studies give little attention to the informal sector, which remains largely untaxed despite constituting a majority of Nigeria’s economic activities (Ocheni, 2020). The role of digital technology in bridging tax gaps is also under-explored in local literature. Therefore, this study intends to fill these gaps by providing a comprehensive evaluation of the impact of taxation on revenue generation in Nigeria, emphasizing real-world policy effectiveness, taxpayer perception, administrative bottlenecks, and the overlooked potential within the informal economy.
1.3 Objectives of the Study
The main objective of this study is to examine the impact of taxation on revenue generation in Nigeria. Specifically, the study aims to:
- Evaluate the effectiveness of the current tax system in generating revenue for the Nigerian government.
- Identify the major challenges hindering efficient tax collection in Nigeria.
- Assess the relationship between tax reforms and improvements in revenue generation
1.4 Research Questions
The study seeks to provide answers to the following research questions:
- How effective is the Nigerian tax system in generating revenue for the government?
- What are the key challenges limiting efficient tax collection in Nigeria?
- To what extent have tax reforms improved revenue generation in Nigeria?
1.5 Research Hypotheses
The study will test the following hypotheses:
H₀₁: There is no significant relationship between taxation and revenue generation in Nigeria.
H₀₂: Tax collection challenges do not significantly affect the level of revenue generated in Nigeria.
H₀₃: Tax reforms have no significant effect on government revenue in Nigeria.
1.6 Significance of the Study
This study holds significant value for a wide range of stakeholders, each of whom will benefit from the insights it provides. For government and policymakers, the findings will offer evidence-based recommendations on how to strengthen tax policies and improve tax administration to increase revenue generation. By addressing current challenges within the tax system, the study will help policymakers design more effective strategies to enhance fiscal capacity and promote long-term economic stability. Tax authorities such as the Federal Inland Revenue Service (FIRS) and State Boards of Internal Revenue (SBIR) will gain useful insights into how to improve taxpayer compliance, refine education programs, and enhance engagement with the informal sector, which is a key component of Nigeria’s economy yet remains largely untapped for taxation.
For academia and researchers, this study will contribute to the growing body of literature on taxation and public finance in Nigeria. It will provide a comprehensive analysis of the strengths and weaknesses of the current tax system, offering valuable data and findings that can form the foundation for future research in related areas. The business community and taxpayers will also benefit from the study, as it will deepen their understanding of how taxation influences government revenue generation. This knowledge can foster a greater sense of responsibility among taxpayers, promoting voluntary compliance, and encouraging them to recognize the importance of contributing to national development through tax payments.
International donor agencies, including organizations like the World Bank and the International Monetary Fund (IMF), will find the study particularly useful in their efforts to support Nigeria’s fiscal sustainability. The study’s findings will inform their strategies for providing technical assistance and development support aimed at improving Nigeria’s tax system and financial management. Ultimately, the goal of this study is to foster a more transparent, efficient, and equitable tax system in Nigeria, one that not only generates sufficient revenue but also supports sustainable economic development for the nation’s future.
1.7 Scope of the Study
The scope of this study is limited to the assessment of taxation as it affects revenue generation in Nigeria. The study will focus on major forms of taxes collected at the federal level, such as Company Income Tax (CIT), Personal Income Tax (PIT), Value-Added Tax (VAT), and Petroleum Profit Tax (PPT). Geographically, the study will concentrate on federal government tax revenue data, with references to specific reforms and performance indicators between 2010 and 2024. The study will not cover local government taxes due to limited accessibility and coverage of reliable data.