ASSESSMENT OF FACTORS RESPONSIBLE FOR BUDGET FAILURE IN NIGERIA

CHAPTER ONE: INTRODUCTION

1.1 Background of the Study

A budget is a comprehensive financial plan that sets forth a government’s expected revenues and proposed expenditures for a specified fiscal year. It is the most important policy document of any government, translating political promises and development plans into concrete financial commitments. The budget serves multiple critical functions: (1) allocative function: allocating scarce public resources to competing priorities (education, health, infrastructure, defense, etc.); (2) stabilization function: managing aggregate demand to promote economic stability (counter-cyclical fiscal policy); (3) distribution function: redistributing income and wealth through taxation and social spending; (4) accountability function: providing a framework for holding government accountable for its use of public funds; and (5) planning function: setting out the government’s policy priorities for the coming year (Schick, 2018). (Schick, 2018)

Budget success or failure is typically assessed using several criteria. A successful budget is one that: (1) is approved by the legislature before the start of the fiscal year (timeliness); (2) is based on realistic revenue and expenditure estimates (credibility); (3) is implemented as planned, with actual revenues and expenditures close to budgeted figures (budget credibility); (4) achieves its stated policy objectives (effectiveness); (5) is transparent and accessible to citizens; and (6) is subject to effective audit and legislative oversight. A failed budget is one that suffers from chronic delays, unrealistic estimates, poor implementation, large deviations between budget and actual, failure to achieve objectives, lack of transparency, and weak accountability (World Bank, 2020). (World Bank, 2020)

Nigeria operates a presidential system of government with a federal structure comprising the federal government, 36 state governments, and 774 local governments. The budget process involves three main actors: (1) the Executive (President, Ministry of Finance, Budget Office) which prepares and implements the budget; (2) the Legislature (National Assembly, State Houses of Assembly) which reviews, amends, and approves the budget; and (3) the Audit (Office of the Auditor-General, Public Accounts Committees) which audits budget implementation and holds the executive accountable. The budget cycle consists of four phases: (1) budget formulation (executive prepares budget proposal); (2) budget approval (legislature reviews and approves); (3) budget execution (executive implements the budget); and (4) budget audit and oversight (audit and legislature review implementation) (Federal Republic of Nigeria, 1999). (Federal Republic of Nigeria, 1999)

The Nigerian budget process has been plagued by chronic failures for decades. Despite numerous reforms—including the introduction of the Medium-Term Expenditure Framework (MTEF), Fiscal Responsibility Act, Treasury Single Account (TSA), Government Integrated Financial Management Information System (GIFMIS), and the adoption of the 1999 Constitution (with its budget provisions)—the budget remains largely a “budget of estimates” that is not implemented as planned (BudgIT, 2023). (BudgIT, 2023)

Key indicators of budget failure in Nigeria include:

Chronic late passage of budgets. The Nigerian fiscal year begins on January 1, but budgets are rarely passed by the National Assembly before the start of the year. In many years, budgets are passed in March, April, May, or even June (six months into the fiscal year). For example, the 2022 budget was passed in December 2021 (on time); the 2021 budget was passed in December 2020 (on time); but the 2020 budget was passed in December 2019 (on time). However, prior to 2019, chronic delays were the norm: the 2016 budget was passed in May 2016; the 2017 budget in May 2017; the 2018 budget in June 2018; the 2019 budget in April 2019 (BudgIT, 2023). (BudgIT, 2023)

Low budget credibility (high variance between budget and actual). The International Monetary Fund (IMF) recommends that aggregate expenditure variance should not exceed 5% for a credible budget. In Nigeria, aggregate expenditure variance often exceeds 20% for capital expenditure (BudgIT, 2023). For example, the 2019 capital budget implementation rate was only 65% (meaning 35% of appropriated capital funds were not spent). Recurrent expenditure implementation is higher (>90%), but this often reflects mandatory spending (salaries, debt service) rather than discretionary spending. (BudgIT, 2023)

Unrealistic revenue estimates. The budget is based on assumptions about oil prices, oil production, and non-oil revenues that are often overly optimistic. When revenues fall short, the government must borrow to finance the deficit, leading to increased debt and debt service costs. Nigeria’s debt-to-GDP ratio has increased from 19% in 2015 to over 35% in 2023, and debt service consumes over 90% of federal government revenue (Budget Office, 2023). (Budget Office, 2023)

Poor budget implementation (low release of appropriated funds). Even when budgets are passed, funds are often released late or not at all. The Budget Office releases funds quarterly (sometimes monthly), but delays are common. Capital projects are often not completed due to funding delays and poor project management.

Frequent supplementary budgets and virements. The executive often requests supplementary budgets (additional appropriations) during the fiscal year, indicating that original estimates were inaccurate. Virements (transfers of funds between budget lines) are also frequent, circumventing legislative approval.

Poor audit outcomes. The Auditor-General of the Federation consistently reports significant financial irregularities: unauthorized expenditures, payments without supporting documents, contract awards without due process, and non-retirement of advances. The same irregularities appear year after year, indicating that audit recommendations are not implemented (Auditor-General of the Federation, 2020). (Auditor-General of the Federation, 2020)

Several factors are often cited as responsible for budget failure in Nigeria. These can be grouped into several categories (Schick, 2018; World Bank, 2020):

Political Factors: (1) Executive-legislature conflict over budget priorities; (2) lack of political will to implement reforms; (3) election cycles that disrupt budget timing; (4) political interference in budget execution (e.g., releasing funds for political projects); (5) corruption and patronage (budget padding, contract inflation, diversion of funds); and (6) weak accountability (no consequences for budget failure).

Institutional Factors: (1) Weak capacity of budget offices (understaffed, underfunded, lack of technical expertise); (2) poor coordination between Ministry of Finance, Budget Office, and spending ministries; (3) weak legislative oversight (Public Accounts Committees understaffed, underfunded, lacking expertise); (4) weak audit follow-up (audit recommendations not implemented); (5) multiplicity of extra-budgetary funds (off-budget spending); and (6) weak procurement systems (awarding contracts without due process).

Economic Factors: (1) Oil price volatility (Nigeria’s budget is highly dependent on oil revenues); (2) exchange rate volatility (affects import costs, debt service, and revenue); (3) inflation (erodes budget value); (4) low non-oil revenue base (tax-to-GDP ratio of 6-8%, one of the lowest in the world); (5) high debt service costs (consume over 90% of revenue); and (6) economic shocks (e.g., COVID-19 pandemic).

Technical Factors: (1) Unrealistic revenue forecasts (overly optimistic assumptions); (2) poor budget classification (not aligned with international standards); (3) lack of program budgeting (budget not linked to results); (4) poor costing of policies (unrealistic cost estimates); (5) lack of Medium-Term Expenditure Framework (MTEF) integration; and (6) poor budget documentation (not accessible to citizens).

Process Factors: (1) Late submission of budget to legislature (by October deadline); (2) late approval by legislature (after January 1); (3) late release of funds by Budget Office; (4) poor budget execution monitoring; (5) frequent virements and supplementary budgets; and (6) end-of-year spending spree (use-it-or-lose-it behavior).

Structural Factors: (1) Federal character and geopolitical balancing (budget allocations often based on political considerations rather than economic efficiency); (2) centralized revenue collection with decentralized spending; (3) weak linkage between budget and national development plans (Vision 2020, ERGP, SDGs); and (4) multiplicity of government agencies with overlapping mandates.

The consequences of budget failure are severe for Nigerian citizens and the economy. Poor service delivery: when budgeted funds for education, health, infrastructure, and social protection are not released or are diverted, essential services deteriorate. Waste and fraud: weak budget controls enable waste (overpriced contracts) and fraud (diversion of funds). Loss of public trust: citizens lose confidence in government when budgets are not implemented as promised. Macroeconomic instability: unpredictable budget outcomes undermine fiscal discipline, contributing to inflation, exchange rate volatility, and debt accumulation. Underdevelopment: resources that could have been used for development are wasted or not spent (BudgIT, 2023). (BudgIT, 2023)

The COVID-19 pandemic (2020-2021) exacerbated budget failures. The government introduced a COVID-19 budget (supplementary budget) with significant borrowing. However, audit reports revealed poor accountability: billions of Naira could not be accounted for due to poor record keeping, lack of supporting documents, and failure to retire advances. The pandemic demonstrated that budget failures are not just procedural; they have real consequences for citizens’ lives (Ogunyemi and Adewale, 2021). (Ogunyemi and Adewale, 2021)

Several theories explain budget failure. Agency theory (Jensen and Meckling, 1976) suggests that budget failure results from information asymmetry between the executive (agent) and legislature/citizens (principals). The executive has private information about revenues and expenditures, enabling it to deviate from the budget without detection. Political budget cycle theory (Nordhaus, 1975) suggests that politicians manipulate budgets (increase spending, reduce taxes) before elections to win votes, leading to budget failure. Institutional theory (DiMaggio and Powell, 1983) suggests that budget reforms are adopted for legitimacy (to appear modern) but are not implemented (decoupling). Public choice theory (Buchanan and Tullock, 1962) suggests that budget failure results from rent-seeking by interest groups (lobbyists) who capture budget allocations for their benefit. (Buchanan and Tullock, 1962; DiMaggio and Powell, 1983; Jensen and Meckling, 1976; Nordhaus, 1975)

1.2 Statement of the Problem

Despite numerous budget reforms over the past two decades—the Fiscal Responsibility Act (2007), Medium-Term Expenditure Framework (MTEF), Treasury Single Account (TSA), Government Integrated Financial Management Information System (GIFMIS), and the 1999 Constitution budget provisions—budget failure persists in Nigeria. This problem manifests in chronic late passage, unrealistic estimates, poor implementation, large deviations between budget and actual, supplementary budgets, poor audit outcomes, and weak accountability. The statement of this problem is supported by the following specific issues.

First, chronic late passage of budgets. The Nigerian fiscal year begins on January 1, but budgets are rarely passed by the National Assembly before the start of the year. Delays of several months are common, meaning that the government operates without legal appropriation for the first quarter (or longer) of the fiscal year. This violates the constitutional requirement that no expenditure be incurred without appropriation. BudgIT (2023) found that budgets were passed after January 1 in 60% of the years between 2010 and 2022. (BudgIT, 2023)

Second, low budget credibility (high variance between budget and actual) . The IMF recommends that aggregate expenditure variance should not exceed 5% for a credible budget. In Nigeria, capital expenditure variance often exceeds 30%. For example, the 2019 capital budget implementation rate was 65% (35% variance); the 2020 capital budget implementation rate was 70% (30% variance); the 2021 capital budget implementation rate was 68% (32% variance). This means that nearly one-third of appropriated capital funds are not spent as planned (Budget Office, 2023). (Budget Office, 2023)

Third, unrealistic revenue estimates. The budget is based on optimistic assumptions about oil prices (e.g., $57/barrel benchmark), oil production (e.g., 1.8 million barrels per day), and non-oil revenues. These assumptions are often not met, leading to revenue shortfalls and increased borrowing. Nigeria’s debt-to-GDP ratio increased from 19% in 2015 to over 35% in 2023, and debt service consumes over 90% of federal government revenue (Budget Office, 2023). (Budget Office, 2023)

Fourth, poor budget implementation (low release of appropriated funds) . Even when budgets are passed, funds are often released late or not at all. For capital projects, funds are often released in the last quarter of the fiscal year (October-December), making it impossible to complete projects before year-end. This leads to project delays, cost overruns, and abandoned projects. The Budget Office (2023) reported that 60% of capital funds were released in the fourth quarter of 2022. (Budget Office, 2023)

Fifth, frequent supplementary budgets and virements. The executive often requests supplementary budgets (additional appropriations) during the fiscal year, indicating that original estimates were inaccurate. For example, COVID-19 supplementary budgets were introduced in 2020. Virements (transfers of funds between budget lines) are also frequent. The Budget Office (2023) reported over 500 virement requests in 2022, many of which circumvented legislative approval. (Budget Office, 2023)

Sixth, poor audit outcomes. The Auditor-General consistently reports significant financial irregularities: unauthorized expenditures, payments without supporting documents, contract awards without due process, and non-retirement of advances. The 2019 Auditor-General’s report documented billions of Naira in irregularities. The same irregularities appear year after year, indicating that audit recommendations are not implemented (Auditor-General of the Federation, 2020). (Auditor-General of the Federation, 2020)

Seventh, executive-legislature conflict. Conflict between the executive and legislature over budget priorities is common. The executive submits a budget proposal; the legislature may add “pork barrel” projects (constituency projects) or cut executive priorities. The executive may then refuse to implement the budget as amended, or may delay implementation. This conflict wastes time and resources (BudgIT, 2023). (BudgIT, 2023)

Eighth, corruption and budget padding. The Nigerian budget process has been plagued by corruption scandals: “budget padding” (inserting fictitious projects), contract inflation (paying above market price), and diversion of funds. High-profile investigations have uncovered billions of Naira in fraudulent budget items. Corruption undermines budget credibility and diverts resources from service delivery (BudgIT, 2023). (BudgIT, 2023)

Ninth, weak capacity of budget institutions. The Budget Office is understaffed and underfunded. The National Assembly lacks technical budget expertise (budget analysts, economists). The Public Accounts Committees (PACs) are weak: they meet infrequently, lack staff, and members often lack financial expertise. Without capacity, budget institutions cannot perform their functions effectively (World Bank, 2020). (World Bank, 2020)

Tenth, oil price volatility. Nigeria’s budget is highly dependent on oil revenues (80% of foreign exchange earnings, 50% of government revenue). Oil price volatility (e.g., 2014-2016 oil price crash, 2020 COVID-19 oil price crash) makes revenue forecasting extremely difficult. When oil prices fall, revenues fall, budgets cannot be implemented as planned, and deficits increase (Budget Office, 2023). (Budget Office, 2023)

Eleventh, low non-oil revenue base. Nigeria’s tax-to-GDP ratio is 6-8%, one of the lowest in the world. The average for Sub-Saharan Africa is 15-18%. Low non-oil revenues limit the government’s ability to finance the budget without borrowing. Tax evasion, tax avoidance, and weak tax administration contribute to low revenues (World Bank, 2020). (World Bank, 2020)

Twelfth, lack of linkage between budget and development plans. The budget should be linked to national development plans (e.g., Vision 2020, Economic Recovery and Growth Plan (ERGP), Nigeria Agenda 2050). However, this linkage is weak. Budget allocations do not always reflect development priorities, and development plan targets are not always achieved due to budget failures (BudgIT, 2023). (BudgIT, 2023)

Thirteenth, there is a significant gap in the empirical literature on the assessment of factors responsible for budget failure in Nigeria. Most studies focus on one factor (e.g., executive-legislature conflict) or one dimension (e.g., budget credibility). Few studies provide a comprehensive assessment of multiple factors (political, institutional, economic, technical, process, structural) and their relative importance. Few studies use rigorous empirical methods (regression analysis, factor analysis) to identify the most significant factors. This study addresses these gaps (Okoye, Okafor, and Nnamdi, 2020). (Okoye et al., 2020)

Therefore, the central problem this study seeks to address can be stated as: Despite numerous budget reforms, budget failure persists in Nigeria, manifesting in chronic late passage, unrealistic estimates, poor implementation, large deviations between budget and actual, supplementary budgets, poor audit outcomes, and weak accountability. The specific factors responsible for budget failure—political, institutional, economic, technical, process, and structural—and their relative importance have not been systematically assessed. This study addresses this gap by comprehensively assessing the factors responsible for budget failure in Nigeria.

1.3 Aim of the Study

The aim of this study is to comprehensively assess the factors responsible for budget failure in Nigeria, with a view to identifying the political, institutional, economic, technical, process, and structural factors that contribute to budget failure, determining their relative importance, and proposing evidence-based recommendations for budget reform.

1.4 Objectives of the Study

The specific objectives of this study are to:

1. Assess the extent of budget failure in Nigeria, as measured by: (a) timeliness of budget passage; (b) budget credibility (variance between budget and actual); (c) revenue estimate accuracy; (d) budget implementation rates; (e) frequency of supplementary budgets and virements; and (f) audit outcomes.
2. Identify and classify the political factors responsible for budget failure: executive-legislature conflict, political will, election cycles, political interference, corruption, patronage, and weak accountability.
3. Identify and classify the institutional factors responsible for budget failure: capacity of budget institutions (Budget Office, Ministry of Finance, National Assembly, Public Accounts Committees), coordination, audit follow-up, extra-budgetary funds, and procurement systems.
4. Identify and classify the economic factors responsible for budget failure: oil price volatility, exchange rate volatility, inflation, low non-oil revenue base, high debt service costs, and economic shocks.
5. Identify and classify the technical factors responsible for budget failure: revenue forecasting accuracy, budget classification, program budgeting, policy costing, MTEF integration, and budget documentation.
6. Identify and classify the process factors responsible for budget failure: budget submission timeliness, approval timeliness, fund release timeliness, execution monitoring, virement frequency, and supplementary budget frequency.
7. Identify and classify the structural factors responsible for budget failure: federal character, geopolitical balancing, centralized revenue collection, linkage to development plans, and agency multiplicity.
8. Determine the relative importance of each factor category (political, institutional, economic, technical, process, structural) and propose evidence-based recommendations for budget reform.

1.5 Research Questions

The following research questions guide this study:

1. What is the extent of budget failure in Nigeria as measured by timeliness, credibility, revenue estimate accuracy, implementation rates, supplementary budgets, virements, and audit outcomes?
2. What political factors (executive-legislature conflict, political will, election cycles, political interference, corruption, patronage, weak accountability) are responsible for budget failure?
3. What institutional factors (capacity of budget institutions, coordination, audit follow-up, extra-budgetary funds, procurement systems) are responsible for budget failure?
4. What economic factors (oil price volatility, exchange rate volatility, inflation, low non-oil revenue base, high debt service costs, economic shocks) are responsible for budget failure?
5. What technical factors (revenue forecasting accuracy, budget classification, program budgeting, policy costing, MTEF integration, budget documentation) are responsible for budget failure?
6. What process factors (budget submission timeliness, approval timeliness, fund release timeliness, execution monitoring, virement frequency, supplementary budget frequency) are responsible for budget failure?
7. What structural factors (federal character, geopolitical balancing, centralized revenue collection, linkage to development plans, agency multiplicity) are responsible for budget failure?
8. Which factor category (political, institutional, economic, technical, process, structural) is most important, and what recommendations can be proposed for budget reform?

1.6 Research Hypotheses

Based on the research objectives and questions, the following hypotheses are formulated. Each hypothesis is presented with both a null (H₀) and an alternative (H₁) statement.

Hypothesis One (Political Factors)

• H₀₁: Political factors (executive-legislature conflict, political interference, corruption) do not significantly contribute to budget failure in Nigeria.
• H₁₁: Political factors significantly contribute to budget failure in Nigeria.

Hypothesis Two (Institutional Factors)

• H₀₂: Institutional factors (capacity of budget institutions, weak audit follow-up) do not significantly contribute to budget failure in Nigeria.
• H₁₂: Institutional factors significantly contribute to budget failure in Nigeria.

Hypothesis Three (Economic Factors)

• H₀₃: Economic factors (oil price volatility, exchange rate volatility, low non-oil revenue base) do not significantly contribute to budget failure in Nigeria.
• H₁₃: Economic factors significantly contribute to budget failure in Nigeria.

Hypothesis Four (Technical Factors)

• H₀₄: Technical factors (unrealistic revenue forecasts, poor budget classification) do not significantly contribute to budget failure in Nigeria.
• H₁₄: Technical factors significantly contribute to budget failure in Nigeria.

Hypothesis Five (Process Factors)

• H₀₅: Process factors (late submission, late approval, late fund release) do not significantly contribute to budget failure in Nigeria.
• H₁₅: Process factors significantly contribute to budget failure in Nigeria.

Hypothesis Six (Structural Factors)

• H₀₆: Structural factors (federal character, geopolitical balancing) do not significantly contribute to budget failure in Nigeria.
• H₁₆: Structural factors significantly contribute to budget failure in Nigeria.

Hypothesis Seven (Relative Importance)

• H₀₇: There is no significant difference in the contribution of political, institutional, economic, technical, process, and structural factors to budget failure.
• H₁₇: There is a significant difference in the contribution of political, institutional, economic, technical, process, and structural factors to budget failure.

Hypothesis Eight (Executive-Legislature Conflict)

• H₀₈: Executive-legislature conflict does not significantly affect the timeliness of budget passage.
• H₁₈: Executive-legislature conflict significantly delays the passage of the budget.

1.7 Significance of the Study

This study holds significance for multiple stakeholders as follows:

For the Executive (President, Ministry of Finance, Budget Office):
The study provides empirical evidence on the factors responsible for budget failure. The executive can use this evidence to prioritize reforms: which factors should be addressed first? Should they focus on improving revenue forecasting? Should they strengthen coordination with the legislature? Should they improve budget execution monitoring? The study also provides evidence for reporting to the National Assembly and citizens.

For the National Assembly (Senate, House of Representatives, Public Accounts Committees):
The legislature plays a critical role in budget approval and oversight. The study provides evidence on how legislative behavior (delays, amendments, pork-barrel projects) contributes to budget failure. The legislature can use this evidence to reform its budget processes: should it establish a budget office with technical expertise? Should it strengthen Public Accounts Committees? Should it limit amendments? The study also provides evidence for oversight of the executive.

For Civil Society Organizations (BudgIT, Enough is Enough, TI-Nigeria, CSO-SPARC):
CSOs advocate for budget transparency and accountability. The study provides evidence on systemic factors that CSOs can use in advocacy campaigns (e.g., “poor revenue forecasting causes budget failure”). The study also provides evidence to monitor government reforms and to hold officials accountable.

For International Development Partners (World Bank, IMF, DFID, EU):
Development partners have invested in budget reforms in Nigeria (e.g., MTEF, TSA, GIFMIS, budget transparency). The study provides evidence on the effectiveness (or ineffectiveness) of these reforms and identifies remaining gaps. Development partners can use this evidence to design future programs, focusing on the most important factors.

For State and Local Governments:
While the study focuses on the federal budget, many factors (political interference, weak capacity, low revenue base) also affect state and local government budgets. The findings can be adapted for state and local budget reform.

For Academics and Researchers:
This study contributes to the literature on public financial management and budget failure in several ways. First, it provides a comprehensive assessment of multiple factor categories (political, institutional, economic, technical, process, structural). Second, it uses rigorous empirical methods (regression analysis, factor analysis) to identify the most significant factors. Third, it provides recent evidence (2000-2024). The study provides a foundation for future research in other African countries and developing economies.

For the Nigerian Citizen and Taxpayer:
Citizens pay taxes and deserve to know why the budget fails. The study provides evidence that citizens can use to demand accountability from their elected officials. Citizens can use the findings to vote based on budget performance.

For the Nigerian Economy:
Budget failure has severe economic consequences: poor service delivery, waste, fraud, macroeconomic instability, debt accumulation, and underdevelopment. By identifying the factors responsible for budget failure, this study contributes to budget reform, which will improve service delivery, reduce waste, enhance fiscal discipline, and promote economic development.

1.8 Scope of the Study

The scope of this study is defined by the following parameters:

Content Scope: The study focuses on the assessment of factors responsible for budget failure in Nigeria. Specifically, it examines: (1) the extent of budget failure (timeliness, credibility, revenue accuracy, implementation rates, supplementary budgets, virements, audit outcomes); (2) political factors; (3) institutional factors; (4) economic factors; (5) technical factors; (6) process factors; (7) structural factors; and (8) relative importance of factors. The study does not examine state or local government budgets in detail, except for comparison. The study does not examine budget formulation in depth (e.g., how budget proposals are developed).

Geographic Scope: The study focuses on the federal government budget of Nigeria. The federal budget accounts for the largest share of public expenditure and has the most available data. Where applicable, comparisons are made with state budgets. The study does not cover local government budgets.

Time Scope: The study covers a 24-year period from 2000 to 2024. This period encompasses: (1) the return to civilian rule (1999); (2) budget reforms (Fiscal Responsibility Act 2007, MTEF, TSA, GIFMIS); (3) oil price boom (2000-2014); (4) oil price crash (2014-2016); (5) COVID-19 pandemic (2020-2021); and (6) post-pandemic recovery (2022-2024). This long period enables analysis of trends over time and the impact of external shocks.

Data Sources: The study uses multiple data sources: (1) budget documents (appropriation acts, budget proposals, budget implementation reports); (2) audit reports (Auditor-General of the Federation); (3) fiscal data (Budget Office, CBN, National Bureau of Statistics); (4) surveys of budget stakeholders (budget officials, legislators, civil society); (5) interviews with key informants (Budget Office, National Assembly, Ministry of Finance); and (6) case studies of specific budget years (e.g., 2016, 2020).

Theoretical Scope: The study is grounded in agency theory (information asymmetry between executive and legislature), political budget cycle theory (election-year manipulation), institutional theory (decoupling), and public choice theory (rent-seeking). These theories provide the conceptual lens for understanding budget failure.

Methodological Scope: The study uses a mixed-methods design: (1) quantitative analysis of secondary data (budget documents, audit reports, fiscal data) to measure budget failure and identify trends; (2) regression analysis to identify factors associated with budget failure; (3) factor analysis to group factors into categories; (4) surveys of budget stakeholders to assess perceived importance of factors; and (5) qualitative interviews with key informants to understand causal mechanisms.

1.9 Definition of Terms

The following key terms are defined operationally as used in this study:

Term	Definition
Budget	A comprehensive financial plan that sets forth a government’s expected revenues and proposed expenditures for a specified fiscal year.
Budget Failure	The inability of the budget process to achieve its objectives, manifested in chronic late passage, unrealistic estimates, poor implementation, large deviations between budget and actual, supplementary budgets, poor audit outcomes, and weak accountability.
Budget Credibility	The degree to which actual revenues and expenditures conform to budgeted estimates. High credibility means actual figures are close to budget.
Budget Implementation Rate	The percentage of appropriated funds that are actually spent (released by the Budget Office).
Supplementary Budget	An additional appropriation requested by the executive during the fiscal year to cover expenditures not included in the original budget.
Virement	The transfer of funds from one budget line to another during budget execution, often used to reallocate funds without legislative approval.
Medium-Term Expenditure Framework (MTEF)	A rolling 3-year budget framework that links policy planning to budgeting, intended to improve budget credibility.
Treasury Single Account (TSA)	A unified bank account into which all government revenues are deposited and from which all payments are made, improving cash management and control.
GIFMIS	Government Integrated Financial Management Information System. An integrated computerized financial management system for budget execution, accounting, and reporting.
Budget Padding	The insertion of fictitious or inflated projects into the budget by legislators or executive officials for personal gain.
Constituency Project	Projects inserted into the budget by legislators to benefit their home constituencies, often without proper costing or oversight.
Federal Character	A constitutional principle requiring that appointments and resource allocation reflect the diversity of Nigeria’s ethnic and geographic groups, often leading to inefficient budget allocations.
Public Accounts Committee (PAC)	A legislative committee responsible for reviewing audit reports and holding the executive accountable for financial irregularities.
Fiscal Responsibility Act (2007)	A law requiring fiscal discipline, transparency, and accountability in government finances, including the MTEF and fiscal rules.

CHAPTER TWO: LITERATURE REVIEW

2.1 Introduction

This chapter presents a comprehensive review of literature relevant to the assessment of factors responsible for budget failure in Nigeria. The review is organized into five main sections. First, the conceptual framework section defines and explains the key constructs: budget, budget failure, budget credibility, budget implementation, and the factors (political, institutional, economic, technical, process, structural) that contribute to budget failure. Second, the theoretical framework section examines the theories that underpin budget failure, including agency theory, political budget cycle theory, institutional theory, public choice theory, and fiscal illusion theory. Third, the empirical review section synthesizes findings from previous studies on budget failure globally and in Nigeria. Fourth, the regulatory framework section examines the Nigerian context, including the Fiscal Responsibility Act, MTEF, TSA, and GIFMIS. Fifth, the summary of literature identifies gaps that this study seeks to address.

The purpose of this literature review is to situate the current study within the existing body of knowledge, identify areas of consensus and controversy, and justify the research questions and hypotheses formulated in Chapter One (Creswell and Creswell, 2018). By critically engaging with prior scholarship, this chapter establishes the intellectual foundation upon which the present investigation is built. (Creswell and Creswell, 2018)

2.2 Conceptual Framework

2.2.1 The Concept of a Budget

A budget is a comprehensive financial plan that sets forth a government’s expected revenues and proposed expenditures for a specified fiscal year. It is the most important policy document of any government, translating political promises and development plans into concrete financial commitments. The budget serves several critical functions (Schick, 2018). (Schick, 2018)

Allocative function: Allocating scarce public resources to competing priorities (education, health, infrastructure, defense, etc.). The budget answers the question: “Who gets what?”

Stabilization function: Managing aggregate demand to promote economic stability (counter-cyclical fiscal policy). During recessions, governments increase spending and cut taxes; during booms, they reduce spending and increase taxes.

Distribution function: Redistributing income and wealth through taxation and social spending (progressive taxes, social transfers, subsidies).

Accountability function: Providing a framework for holding government accountable for its use of public funds. The budget is the basis for legislative oversight and audit.

Planning function: Setting out the government’s policy priorities for the coming year, linking policy to finance.

The budget cycle consists of four phases: (1) budget formulation (executive prepares budget proposal); (2) budget approval (legislature reviews and approves); (3) budget execution (executive implements the budget); and (4) budget audit and oversight (audit and legislature review implementation). Budget failure can occur at any phase (Schick, 2018). (Schick, 2018)

2.2.2 The Concept of Budget Failure

Budget failure refers to the inability of the budget process to achieve its objectives. A successful budget is one that: (1) is approved by the legislature before the start of the fiscal year (timeliness); (2) is based on realistic revenue and expenditure estimates (credibility); (3) is implemented as planned, with actual revenues and expenditures close to budgeted figures (budget credibility); (4) achieves its stated policy objectives (effectiveness); (5) is transparent and accessible to citizens; and (6) is subject to effective audit and legislative oversight (World Bank, 2020). (World Bank, 2020)

Budget failure manifests in several ways (BudgIT, 2023):

Chronic late passage: Budgets are approved after the start of the fiscal year (sometimes months late), violating constitutional requirements and creating uncertainty.

Unrealistic estimates: Revenue and expenditure estimates are overly optimistic or not based on evidence, leading to budget credibility problems.

Low budget credibility (high variance): Actual revenues and expenditures deviate significantly from budgeted figures. The IMF recommends aggregate expenditure variance ≤5%; in Nigeria, variance often exceeds 30% for capital expenditure.

Poor budget implementation: Appropriated funds are not released (or released late), leading to low implementation rates, especially for capital projects.

Frequent supplementary budgets and virements: Original budgets are inaccurate, requiring additional appropriations or transfers between budget lines.

Poor audit outcomes: Auditors consistently report financial irregularities (unauthorized expenditures, unsupported payments), and recommendations are not implemented.

Weak accountability: No consequences for budget failure; officials are not sanctioned.

2.2.3 Budget Credibility

Budget credibility is the degree to which actual revenues and expenditures conform to budgeted estimates. The International Monetary Fund (IMF) recommends that aggregate expenditure variance should not exceed 5% for a credible budget. High variance indicates that the budget is not a reliable planning tool, that legislative oversight is ineffective, and that resources are not being allocated as intended (IMF, 2018). (IMF, 2018)

Budget credibility is measured by comparing budgeted and actual figures:

• Revenue variance: (Actual revenue – Budgeted revenue) / Budgeted revenue
• Expenditure variance: (Actual expenditure – Budgeted expenditure) / Budgeted expenditure
• Expenditure composition variance: Differences in allocation across sectors

In Nigeria, capital expenditure variance often exceeds 30%. Recurrent expenditure variance is lower (<10%), but this is because recurrent spending (salaries, debt service) is mandatory. Low capital budget credibility means that infrastructure, education, and health projects are not funded as planned (BudgIT, 2023). (BudgIT, 2023)

Causes of low budget credibility include: unrealistic revenue forecasts, late release of funds, poor procurement systems, weak project management, and political interference (Schick, 2018). (Schick, 2018)

2.2.4 Political Factors Contributing to Budget Failure

Political factors refer to the influence of political actors, processes, and institutions on budget outcomes. Key political factors include (Schick, 2018; World Bank, 2020): (Schick, 2018; World Bank, 2020)

Executive-legislature conflict: Disagreements between the executive and legislature over budget priorities, amendments, and timelines lead to delays and poor outcomes.

Political will (or lack thereof): The extent to which political leaders prioritize budget reform and compliance. Weak political will leads to non-implementation of reforms.

Election cycles: Politicians manipulate budgets to win votes (political budget cycles): increasing spending before elections, cutting taxes, and increasing deficits.

Political interference: Politicians interfere in budget execution (e.g., releasing funds for political projects, awarding contracts to political supporters).

Corruption: Budget padding (inserting fictitious projects), contract inflation (overpriced contracts), diversion of funds, and kickbacks.

Patronage: Allocating budget resources to supporters (jobs, contracts) rather than based on need or efficiency.

Weak accountability: No consequences for budget failure; officials are not sanctioned for non-compliance.

2.2.5 Institutional Factors Contributing to Budget Failure

Institutional factors refer to the capacity, structure, and processes of budget institutions. Key institutional factors include (Allen, Schiavo-Campo, and Garrity, 2004). (Allen et al., 2004)

Capacity of budget institutions: The Budget Office, Ministry of Finance, National Assembly, and Public Accounts Committees (PACs) may be understaffed, underfunded, or lack technical expertise.

Coordination: Poor coordination between the Budget Office, Ministry of Finance, planning ministry, and spending ministries leads to inconsistent budget documents.

Audit follow-up: Weak follow-up on audit recommendations; recommendations are ignored, and officials face no consequences.

Extra-budgetary funds: Funds that are not included in the budget (off-budget spending) reduce budget comprehensiveness and control.

Procurement systems: Weak procurement systems (no competitive bidding, lack of transparency) enable contract inflation and diversion of funds.

2.2.6 Economic Factors Contributing to Budget Failure

Economic factors refer to the external economic environment that affects budget outcomes. Key economic factors include (Budget Office, 2023). (Budget Office, 2023)

Oil price volatility: Nigeria’s budget is highly dependent on oil revenues (80% of foreign exchange earnings, 50% of government revenue). Oil price volatility makes revenue forecasting extremely difficult.

Exchange rate volatility: The naira has depreciated significantly over time (from ₦100/ in 2024). Exchange rate volatility affects import costs, debt service (external debt), and revenue (dollar-denominated oil revenues).

Inflation: High inflation (average 15-20% in recent years) erodes the real value of budget allocations.

Low non-oil revenue base: Tax-to-GDP ratio is 6-8%, one of the lowest in the world. Low non-oil revenues limit financing options.

High debt service costs: Debt service consumes over 90% of federal government revenue, leaving little for other expenditures.

Economic shocks: External shocks (e.g., COVID-19 pandemic, 2014-2016 oil price crash) disrupt budget implementation.

2.2.7 Technical Factors Contributing to Budget Failure

Technical factors refer to the methodologies and tools used in budget preparation and execution. Key technical factors include (IMF, 2018). (IMF, 2018)

Revenue forecasting accuracy: Overly optimistic revenue forecasts (based on unrealistic oil price or production assumptions) lead to budget credibility problems.

Budget classification: The budget should be classified by economic, functional, and administrative categories, aligned with international standards (GFSM). Poor classification reduces transparency and comparability.

Program budgeting: Budgets should be linked to results (outputs, outcomes). Nigeria uses line-item budgeting (inputs), not program budgeting.

Policy costing: Policies are not properly costed, leading to unrealistic estimates.

MTEF integration: The Medium-Term Expenditure Framework (MTEF) should link policy planning to budgeting. Weak integration leads to annual budget disconnected from medium-term plans.

Budget documentation: Budget documents should be accessible to citizens. Poor documentation reduces transparency.

2.2.8 Process Factors Contributing to Budget Failure

Process factors refer to the timing and procedures of budget preparation and execution. Key process factors include (Schick, 2018). (Schick, 2018)

Budget submission timeliness: The executive should submit the budget to the legislature by October (constitutional requirement). Late submission leads to late approval.

Budget approval timeliness: The legislature should approve the budget by December 31 (before the start of the fiscal year). Delays lead to operating without appropriation (January- March/April/May).

Fund release timeliness: The Budget Office should release funds quarterly or monthly. Late releases lead to low implementation rates (especially for capital projects, released in Q4).

Execution monitoring: Weak monitoring of budget execution (revenue collection, expenditure) leads to poor control.

Virement frequency: Frequent transfers between budget lines indicate poor planning and reduce legislative control.

Supplementary budget frequency: Frequent supplementary budgets indicate original budgets were inaccurate.

2.2.9 Structural Factors Contributing to Budget Failure

Structural factors refer to the constitutional and institutional architecture of the Nigerian federation. Key structural factors include (Federal Republic of Nigeria, 1999). (Federal Republic of Nigeria, 1999)

Federal character: A constitutional principle requiring that appointments and resource allocation reflect Nigeria’s ethnic and geographic diversity. This often leads to inefficient budget allocations (projects located based on political considerations rather than economic efficiency).

Geopolitical balancing: Budget allocations are distributed across the six geopolitical zones to maintain political stability, not based on need or economic return.

Centralized revenue collection with decentralized spending: Revenues are collected centrally (federal government) but spent by federal, state, and local governments. This creates coordination problems.

Linkage to development plans: Weak linkage between budget and national development plans (Vision 2020, ERGP, Nigeria Agenda 2050). Budget allocations do not always reflect development priorities.

Agency multiplicity: Multiple government agencies with overlapping mandates create duplication, waste, and coordination problems.

2.3 Theoretical Framework

This section presents the theories that provide the conceptual lens for understanding budget failure. Five theories are discussed: agency theory, political budget cycle theory, institutional theory, public choice theory, and fiscal illusion theory.

2.3.1 Agency Theory

Agency theory, developed by Jensen and Meckling (1976), posits a conflict of interest between principals (citizens, legislature) and agents (executive, budget officials). Agents have private information about revenues and expenditures (information asymmetry), enabling them to deviate from the budget without detection. The executive may have incentives to: (1) overestimate revenues to justify higher spending; (2) underestimate revenues to hide surpluses; (3) spend on priority projects without legislative approval; and (4) divert funds to political projects (Jensen and Meckling, 1976). (Jensen and Meckling, 1976)

Agency theory predicts that budget failure (e.g., low credibility, unauthorized expenditures) results from information asymmetry and weak monitoring. Strong legislative oversight, independent audit, and transparent budget documentation reduce information asymmetry and improve budget outcomes. In Nigeria, weak oversight and poor transparency enable executive discretion, contributing to budget failure (Jensen and Meckling, 1976). (Jensen and Meckling, 1976)

2.3.2 Political Budget Cycle Theory

Political budget cycle theory, developed by Nordhaus (1975), argues that politicians manipulate budgets before elections to win votes. The typical cycle includes: (1) before elections: increase spending, cut taxes, increase deficits; (2) after elections: reverse policies (cut spending, increase taxes). Political budget cycles lead to budget failure: unrealistic budgets, increased deficits, and poor fiscal discipline (Nordhaus, 1975). (Nordhaus, 1975)

In Nigeria, elections occur every four years (1999, 2003, 2007, 2011, 2015, 2019, 2023). Studies have found evidence of political budget cycles: pre-election spending increases, deficits widen, and fiscal discipline weakens. The 2015 election year budget was passed late, and implementation was poor. The 2023 election year budget (2023 budget) was passed in December 2022 (on time), but implementation may be affected by transition politics (BudgIT, 2023). (BudgIT, 2023)

2.3.3 Institutional Theory

Institutional theory, developed by DiMaggio and Powell (1983), argues that organizations adopt practices not only for their economic benefits but also because of institutional pressures: coercive pressures (legal requirements), mimetic pressures (copying successful organizations), and normative pressures (professional norms). Organizations adopt practices to gain legitimacy, which is essential for survival (DiMaggio and Powell, 1983). (DiMaggio and Powell, 1983)

In the context of budget reform, institutional theory suggests that governments adopt budget reforms (MTEF, TSA, GIFMIS, IPSAS) to gain legitimacy with international partners (IMF, World Bank) and citizens. However, adoption may be “decoupled” from actual practice: governments may adopt reforms on paper but not implement them effectively (decoupling). Decoupling explains why Nigeria has adopted many budget reforms but still experiences budget failure (DiMaggio and Powell, 1983). (DiMaggio and Powell, 1983)

2.3.4 Public Choice Theory

Public choice theory, developed by Buchanan and Tullock (1962), applies economic reasoning to political behavior. Public choice theory argues that politicians, bureaucrats, and interest groups act in their own self-interest, not the public interest. Politicians seek votes, bureaucrats seek budget maximization (empire building), and interest groups seek rent (subsidies, contracts). The interaction of these self-interested actors leads to budget failure: inefficient allocation (pork barrel), excessive spending, and deficits (Buchanan and Tullock, 1962). (Buchanan and Tullock, 1962)

In Nigeria, public choice theory explains: (1) legislators inserting “constituency projects” (pork barrel) into the budget, regardless of national priorities; (2) bureaucrats inflating budgets to increase their power and perquisites; (3) interest groups (contractors, labor unions) lobbying for favorable allocations; and (4) corruption (rent-seeking) diverting funds (Buchanan and Tullock, 1962). (Buchanan and Tullock, 1962)

2.3.5 Fiscal Illusion Theory

Fiscal illusion theory, developed by Puviani (1903) and extended by Buchanan (1967), argues that governments deliberately design tax and expenditure systems to obscure the true cost of government, creating “fiscal illusion.” Citizens underestimate the cost of government, enabling governments to spend more than citizens would approve if they knew the true cost. Fiscal illusion contributes to budget failure: excessive spending, deficits, and debt (Buchanan, 1967). (Buchanan, 1967)

In Nigeria, fiscal illusion may arise from: (1) complex tax systems (multiple taxes, withholding, deductions); (2) indirect taxes (VAT, excise duties) that are less visible than direct taxes (income tax); (3) borrowing (debt) that shifts costs to future generations; (4) oil revenues that are not directly visible to citizens; and (5) opaque budget documents that obscure spending decisions (Buchanan, 1967). (Buchanan, 1967)

2.4 Empirical Review

This section reviews empirical studies that have examined factors responsible for budget failure. The review is organized thematically: global studies, African studies, Nigerian studies, and studies on specific factor categories.

2.4.1 Global Studies

In a seminal study, Alesina, Perotti, and Tavares (2002) examined political factors affecting budget outcomes in 50 countries from 1960-1995. Using panel data regression, they found that countries with more fragmented political systems (many political parties, coalition governments) had larger deficits, poorer budget credibility, and more frequent budget crises. Fragmentation leads to coordination problems and rent-seeking. (Alesina et al., 2002)

In a study of 80 countries, Dabla-Norris, Allen, and Zanna (2018) examined the relationship between budget institutions and budget outcomes. They found that countries with stronger budget institutions (independent fiscal councils, medium-term expenditure frameworks, program budgeting) had significantly lower expenditure variance (mean 8% vs. 18%, p < 0.01). The effect was larger for countries with weak political institutions (where budget institutions substitute for political constraints). (Dabla-Norris et al., 2018)

In a study of 120 countries, IMF (2018) examined the relationship between revenue forecasting accuracy and budget credibility. They found that countries with independent revenue forecasting (by an independent fiscal council) had significantly lower revenue forecast errors (mean 3% vs. 12%, p < 0.01). Countries with optimistic forecasts (overestimating revenue) had larger deficits and more frequent supplementary budgets. (IMF, 2018)

2.4.2 African Studies

In a study of 30 African countries, Lienert (2016) examined budget credibility (expenditure variance) using IMF data. He found that aggregate expenditure variance averaged 15% for African countries, significantly higher than the 5% IMF benchmark. Countries with stronger budget institutions (MTEF, program budgeting, independent audit) had lower variance (mean 10% vs. 20%). Nigeria’s variance was among the highest (30%+ for capital expenditure). (Lienert, 2016)

In a study of 10 West African countries, Ogunleye (2019) examined political factors affecting budget timeliness. He found that election years were associated with budget delays (passage after start of fiscal year) in 70% of cases. Executive-legislature conflict (different party control) was also associated with delays. Countries with same-party control of executive and legislature had faster budget passage (mean 2 months vs. 6 months). (Ogunleye, 2019)

In Ghana, Amoako and Asante (2018) examined the relationship between budget institutions and budget credibility using a case study of 5 budget years. They found that Ghana’s budget credibility improved after the introduction of MTEF (variance reduced from 25% to 12%). However, political interference (election years) still caused variance spikes. (Amoako and Asante, 2018)

2.4.3 Nigerian Studies

Several Nigerian studies have examined factors responsible for budget failure. Okoye, Okafor, and Nnamdi (2020) examined the relationship between executive-legislature conflict and budget timeliness using data from 2000-2019. They found that budgets were passed on time (before January 1) in only 40% of years. Executive-legislature conflict (different party control) was associated with delays averaging 4 months (p < 0.05). Years with same-party control had delays averaging 1 month. (Okoye et al., 2020)

Adeyemi and Ogundipe (2019) examined revenue forecasting accuracy using data from 2000-2018. They found that oil revenue forecasts were overly optimistic in 80% of years (actual < forecast). The average forecast error for oil revenue was 35% (overestimated). Non-oil revenue forecasts were more accurate (error 10%). Over-optimistic revenue forecasts led to larger deficits and supplementary budgets. (Adeyemi and Ogundipe, 2019)

BudgIT (2023) analyzed budget implementation rates from 2015-2022. Key findings: (1) capital budget implementation averaged 65% (range 55-75%); (2) recurrent budget implementation averaged 95% (range 90-98%); (3) capital funds were released late (60% released in Q4); (4) supplementary budgets added 10-20% to original budgets; (5) virements were frequent (500+ per year). (BudgIT, 2023)

Auditor-General of the Federation (2020) documented financial irregularities in budget execution. Key findings: unauthorized expenditures (₦50 billion), payments without supporting documents (₦45 billion), contract awards without due process (₦30 billion), and non-retirement of advances (₦20 billion). The Auditor-General noted that these irregularities persist year after year because audit recommendations are not implemented. (Auditor-General of the Federation, 2020)

Ogunyemi and Adewale (2021) examined budget implementation during COVID-19 (2020-2021). They found that: (1) COVID-19 supplementary budgets were introduced (₦500 billion); (2) capital budget implementation fell to 55% (from 65%); (3) COVID-19 funds were poorly accounted for (billions unaccounted); (4) the pandemic exposed weaknesses in budget flexibility (no contingency planning). (Ogunyemi and Adewale, 2021)

Eze and Okafor (2020) examined the relationship between procurement systems and budget implementation. Using a survey of 100 MDAs, they found that weak procurement systems (no competitive bidding, lack of transparency) were associated with low capital budget implementation (r = 0.48, p < 0.01). MDAs with strong procurement systems had implementation rates 20% higher than those with weak systems. (Eze and Okafor, 2020)

2.4.4 Studies on Specific Factor Categories

Political Factors: Several studies have quantified the impact of political factors. Alesina et al. (2002) found that election years increase deficits by 1.5% of GDP. In Nigeria, BudgIT (2023) found that election years (2003, 2007, 2011, 2015, 2019, 2023) are associated with budget delays and lower implementation rates. Corruption (transparency international CPI) is negatively correlated with budget credibility (r = -0.45, p < 0.05). (Alesina et al., 2002; BudgIT, 2023)

Institutional Factors: Dabla-Norris et al. (2018) found that countries with independent fiscal councils have 5% lower expenditure variance. In Nigeria, the Fiscal Responsibility Commission (FRC) is the fiscal council, but it lacks independence (appointed by the executive) and has weak enforcement powers. (Dabla-Norris et al., 2018)

Economic Factors: Lienert (2016) found that countries with higher commodity dependence (oil, minerals) have higher revenue volatility and lower budget credibility. Nigeria’s oil dependence (50% of revenue) contributes to budget failure. (Lienert, 2016)

Technical Factors: IMF (2018) found that countries using program budgeting have 3% lower expenditure variance than those using line-item budgeting. Nigeria uses line-item budgeting (inputs), not program budgeting (outputs). (IMF, 2018)

Process Factors: Schick (2018) found that countries with quarterly budget execution reporting have 4% lower expenditure variance than those with annual reporting. Nigeria has quarterly reporting, but reporting is often delayed and incomplete. (Schick, 2018)

Structural Factors: Ogunleye (2019) found that federal countries have higher budget variance than unitary countries due to coordination problems. Nigeria’s federal structure (three tiers) contributes to budget failure. (Ogunleye, 2019)

2.5 Regulatory Framework in Nigeria

This section outlines the key regulatory provisions governing the budget process in Nigeria.

Constitution of the Federal Republic of Nigeria (1999 as amended): Sections 80-83 govern budget and appropriation. Section 80 requires that no expenditure be incurred without appropriation by the National Assembly. Section 81 requires the President to submit annual budgets to the National Assembly (no later than September). Section 82 regulates virement (transfer of funds). Section 83 regulates supplementary budgets.

Fiscal Responsibility Act (2007): The Act establishes the Fiscal Responsibility Commission (FRC) to enforce fiscal discipline. It requires the government to: (1) set fiscal targets (debt-to-GDP, deficit-to-GDP); (2) prepare a Medium-Term Expenditure Framework (MTEF); (3) ensure budget credibility (actual close to budget); and (4) report quarterly on budget implementation.

Public Procurement Act (2007): The Act establishes the Bureau of Public Procurement (BPP) to regulate procurement. It requires competitive bidding, transparency, and due process in contract awards.

Treasury Single Account (TSA) Policy (2015): TSA requires that all government revenues be deposited into a single bank account and that all payments be made from that account, improving cash management and expenditure control.

Government Integrated Financial Management Information System (GIFMIS) Implementation Framework (2012): GIFMIS is an integrated computerized financial management system for budget execution, accounting, and reporting. It supports commitment control, payment processing, and budget monitoring.

Medium-Term Expenditure Framework (MTEF) Guidelines: MTEF is a rolling 3-year budget framework linking policy planning to budgeting. The guidelines specify the MTEF preparation process, timeline, and content.

2.6 Summary of Literature Gaps

The review of existing literature reveals several significant gaps that this study seeks to address.

Gap 1: Limited comprehensive assessment of multiple factor categories. Most studies focus on one factor category (e.g., political factors only, economic factors only). This study provides a comprehensive assessment of political, institutional, economic, technical, process, and structural factors.

Gap 2: Lack of quantitative analysis of relative importance. Most studies list factors but do not quantify their relative importance. This study uses regression analysis and factor analysis to determine which factors are most important.

Gap 3: Limited recent evidence (post-COVID). Most Nigerian studies use data up to 2019. This study includes COVID-19 (2020-2021) and post-COVID (2022-2024) data.

Gap 4: Lack of studies examining the interaction between factors. Factors do not operate in isolation; they interact (e.g., political interference weakens institutions). This study examines interactions.

Gap 5: Limited use of mixed methods. Most studies use quantitative (budget data) or qualitative (interviews) but not both. This study uses mixed methods: budget data, surveys, and interviews.

Gap 6: Lack of comparative analysis across budget years. Most studies aggregate across years, losing year-specific effects (e.g., election years, oil price shocks). This study analyzes year-by-year variation.

Gap 7: Limited examination of the role of external shocks (oil price, COVID). External shocks have major impacts but are under-studied. This study examines oil price shocks and COVID-19 as factors.

Gap 8: Lack of linkage between factors and specific budget failure indicators. Most studies link factors to general budget failure. This study links factors to specific indicators: timeliness, credibility, implementation rate, supplementary budgets, virements, audit outcomes.