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Effect of Internally Generated Revenue on Financial Accountability of State Governments in Nigeria

Abstract

Internally Generated Revenue (IGR) has become a critical source of fiscal sustainability and public sector financing as state governments increasingly seek to reduce dependence on statutory allocations from the Federation Account. Internally Generated Revenue refers to revenue generated by state governments from internal sources, including personal income tax, property taxes, business premises registration fees, road taxes, levies, fines, licenses, user charges, market fees, and other non-oil revenue sources. The increasing volatility of oil revenues, fluctuations in federal allocations, rising public expenditure, and growing infrastructure demands have compelled state governments in Nigeria to strengthen domestic revenue mobilization and improve public financial management. Financial accountability, which entails the transparent, efficient, lawful, and responsible management of public resources, remains a fundamental requirement for good governance, public trust, and sustainable socio-economic development. Effective management of Internally Generated Revenue is expected to enhance budget implementation, improve public service delivery, strengthen expenditure control, and promote accountability in the utilization of public funds. Despite ongoing fiscal reforms, digital revenue collection initiatives, Treasury Single Account (TSA) implementation, and public financial management reforms, many state governments continue to experience challenges such as revenue leakages, tax evasion, corruption, weak internal control systems, inadequate financial reporting, political interference, and poor accountability mechanisms. Although previous studies have examined revenue generation and fiscal performance, empirical evidence regarding the effect of Internally Generated Revenue on the financial accountability of state governments in Nigeria remains limited and inconclusive. Against this background, this study investigates the effect of Internally Generated Revenue on the financial accountability of state governments in Nigeria. The study is anchored on Fiscal Federalism Theory, Public Accountability Theory, and Institutional Theory. Fiscal Federalism Theory posits that sub-national governments with stronger internally generated revenue capacity are better positioned to finance development projects, improve fiscal autonomy, and enhance public service delivery. Public Accountability Theory emphasizes that government institutions are obligated to manage public resources transparently and remain answerable to citizens for the collection and utilization of public funds. Institutional Theory argues that effective legal, regulatory, and administrative institutions strengthen revenue mobilization systems and promote accountability in public financial management. Collectively, these theoretical perspectives provide a comprehensive framework for explaining the relationship between Internally Generated Revenue and financial accountability among state governments in Nigeria. The study adopts a quantitative research design using a structured questionnaire administered to directors of finance, accountants, internal auditors, budget officers, revenue officers, treasury officials, directors of internal revenue services, procurement officers, and other personnel responsible for revenue administration and public financial management within selected state governments in Nigeria. A stratified random sampling technique will be employed to ensure adequate representation of respondents from ministries, departments, agencies, state internal revenue services, and offices responsible for budget implementation and financial reporting. Internally Generated Revenue will be measured using revenue mobilization efficiency, tax collection effectiveness, revenue diversification, digital revenue collection systems, revenue administration, taxpayer compliance, and revenue monitoring mechanisms, while financial accountability will be measured using financial transparency, expenditure control, budget implementation efficiency, financial reporting quality, audit compliance, internal control effectiveness, and stewardship of public resources. Primary data collected from respondents will be analyzed using descriptive statistics to summarize respondents' demographic characteristics and perceptions regarding Internally Generated Revenue and financial accountability. Structural Equation Modeling (SEM) will be employed to examine the effect of Internally Generated Revenue on financial accountability. The measurement model will be evaluated using Cronbach's Alpha, Composite Reliability (CR), Average Variance Extracted (AVE), and Confirmatory Factor Analysis (CFA) to establish the reliability and validity of the research instrument. Additional diagnostic tests, including multicollinearity assessment, common method bias analysis, and model fit indices such as the Comparative Fit Index (CFI), Tucker-Lewis Index (TLI), Root Mean Square Error of Approximation (RMSEA), and Standardized Root Mean Square Residual (SRMR), will be conducted to ensure the adequacy, consistency, reliability, and robustness of the structural model. The study anticipates that Internally Generated Revenue will have a significant positive effect on the financial accountability of state governments in Nigeria. Improved revenue generation is expected to strengthen fiscal autonomy, enhance budget implementation, reduce dependence on federal allocations, improve financial reporting, and promote prudent management of public resources. State governments with efficient revenue administration systems are also anticipated to improve expenditure control, strengthen internal controls, enhance audit compliance, reduce financial leakages, and increase transparency in public financial management. Furthermore, effective revenue mobilization through digital tax systems, expanded tax bases, and strengthened revenue monitoring is expected to improve public confidence, facilitate sustainable development, and enhance the delivery of essential public services. Conversely, weak revenue administration, poor tax compliance, corruption, inadequate internal controls, and ineffective financial management may undermine accountability, reduce public trust, increase revenue leakages, and constrain sustainable development. Consequently, effective management of Internally Generated Revenue is expected to contribute significantly to improving financial accountability, fiscal sustainability, and good governance among state governments in Nigeria. This study is expected to make significant theoretical and empirical contributions to the literature on public sector accounting, public finance, taxation, and fiscal management by providing comprehensive evidence on the relationship between Internally Generated Revenue and the financial accountability of state governments in Nigeria. Unlike previous studies that broadly examined revenue generation or fiscal performance, this research specifically evaluates Internally Generated Revenue as a strategic determinant of financial accountability using primary data and Structural Equation Modeling (SEM). The findings will provide valuable insights for the Joint Tax Board (JTB), State Internal Revenue Services, the Federal Inland Revenue Service (FIRS), the Office of the Accountant-General of the Federation, the Office of the Auditor-General for the Federation, the Federal Ministry of Finance, policymakers, public sector managers, professional accounting bodies, development partners, and academic researchers regarding the strategic importance of effective revenue mobilization in promoting transparency, accountability, and prudent public financial management. The study will also provide evidence-based recommendations for strengthening revenue administration systems, expanding digital revenue collection, improving taxpayer compliance, enhancing financial reporting practices, reinforcing internal control mechanisms, and fostering sustainable fiscal governance in Nigeria.

Keywords: Internally Generated Revenue (IGR), financial accountability, state governments, public financial management, revenue mobilization, fiscal sustainability, Structural Equation Modeling (SEM), public sector accounting, taxation, Nigeria.