Nigeria loses staggering sums to corruption every year, yet convictions of high-profile offenders remain rare and asset recoveries are frequently disputed. Traditional auditing, designed to check compliance rather than uncover deliberate deception, has repeatedly proven too blunt an instrument for a problem this calculated and this well concealed. Forensic accounting, which fuses accounting, investigation and courtroom-ready evidence, has emerged as one of the few tools capable of following money through the shell companies, ghost workers and inflated contracts that corrupt officials use to disguise theft.
The scale of the problem shows up clearly in Nigeria’s standing on Transparency International’s Corruption Perceptions Index (CPI), which scores 180 countries from 0 (highly corrupt) to 100 (very clean). Nigeria has hovered in the mid-twenties for most of the past decade, ranking 140th out of 180 countries in 2024 with a score of 26 before slipping slightly to 142nd in 2025 despite holding the same score (Transparency International, cited in The Guardian Nigeria, 2025; Trading Economics, 2025).
A Decade of Stagnation
As Figure 1 and Table 1 show, Nigeria’s CPI score has barely moved since 2019, drifting between 24 and 26 points while its global rank swung from 146th to a low of 154th in 2021 before recovering to 140th in 2024 (ICIR, 2025; Trading Economics, 2025). That flat trend line is precisely why anti-graft agencies have leaned so heavily on forensic accounting: conventional bookkeeping and statutory audits have not moved the needle, so investigators have turned to techniques built specifically to expose concealment rather than merely confirm compliance.
Figure 1: Nigeria’s CPI score and global rank, 2019-2025. Source: Transparency International, compiled via ICIR (2025) and Trading Economics (2025).
Table 1: Nigeria’s Corruption Perceptions Index, 2019-2025
Year CPI Score (/100) Global Rank (of 180)
2019 26 146
2020 25 149
2021 24 154
2022 24 150
2023 25 145
2024 26 140
2025 26 142
From Bookkeeping to Bloodhound
Forensic accounting differs from a routine audit in both purpose and method. Okoye and Gbegi (2013) describe it as the application of accounting, auditing and investigative skills to matters that may end up in a courtroom, meaning every finding must be defensible as legal evidence rather than a management footnote. Modugu and Anyaduba (2013), in an early empirical study of Nigerian practitioners, found that forensic accounting significantly improves the detection and reduction of financial fraud precisely because it targets intent, not just error.
In practice, Nigeria’s Economic and Financial Crimes Commission (EFCC) and Independent Corrupt Practices Commission (ICPC) draw on a common toolkit, summarised in Table 2.
Table 2: Selected forensic accounting techniques used by Nigerian anti-graft agencies
Technique What It Does
Lifestyle audit Compares an official’s visible assets and spending with declared income to flag unexplained wealth.
Forensic data analytics Mines payroll, procurement and bank-transfer data for duplicate payments, ghost workers and round-tripped funds.
Asset tracing Follows the movement of stolen funds through shell companies, real estate and offshore accounts.
Net-worth analysis Reconstructs an individual’s true financial position over time to prove illicit enrichment in court.
Litigation support Packages financial evidence into reports and expert testimony usable in EFCC/ICPC prosecutions.
Evidence That It Works – With Caveats
There is measurable payoff. A 2025 case-study review of EFCC prosecutions found that forensic accounting techniques were successfully applied in roughly 80 percent of the cases examined, contributing directly to convictions and the recovery of misappropriated funds (International Institute of Academic Research and Development, 2025). High-profile matters, from the NDDC scandal to the prosecution of a former Central Bank governor, have relied on forensic reconstruction of financial trails rather than confession or eyewitness testimony (Premium Times, 2020; BBC News, 2023).
Yet recoveries do not always translate into transparency. In 2026, the EFCC announced the recovery of ₦1.233 trillion in corruption-linked assets, but independent forensic review of the announcement found that the agency withheld the granular ledger needed to verify who received restitution and on what basis, illustrating that generating forensic evidence is only half the accountability equation (The Digger, 2026).
What Still Holds It Back
Nigerian researchers point to structural gaps rather than a failure of the method itself. A study published in the International Journal of Research and Innovation in Social Science found that the EFCC has no dedicated forensic accounting department, and that firms with genuine forensic expertise are rarely engaged to support investigations (RSIS International, 2023). A separate 2025 review noted that public awareness of forensic accounting remains low, which limits both its preventive value and the political pressure to fund it properly (IIARD, 2025).
The Path Forward
None of this makes forensic accounting a failed experiment; it makes it an underused one. Embedding forensic units directly inside EFCC and ICPC, mandating forensic audits for high-risk procurement, and publishing recovery data in a verifiable format would convert isolated prosecutorial wins into a systemic deterrent. Nigeria’s stagnant CPI score suggests that awareness campaigns and new legislation alone will not move the trend line. Institutionalising forensic accounting, and making its findings public rather than discretionary, is the more realistic route to finally shifting it.
References
BBC News (2023). Godwin Emefiele: Nigeria’s suspended central bank governor charged.
ICIR (2025). Nigeria ranked 140th in global corruption index. International Centre for Investigative Reporting.
IIARD (2025). Forensic Accounting Techniques as Tools for Nigerian Public Sector Fraud Reduction. International Journal of Accounting and Financial Management, 11(3), 146-157.
Modugu, K. P., & Anyaduba, J. O. (2013). Forensic accounting and financial fraud in Nigeria: An empirical approach. International Journal of Business and Social Science, 4(7), 281-289.
Okoye, E. I., & Gbegi, D. O. (2013). Forensic Accounting: A Tool for Fraud Detection and Prevention in the Public Sector.
Premium Times (2020). NDDC scandal and school feeding programme fraud reports.
RSIS International (2023). Forensic Accounting Techniques and White-Collar Crime in Nigeria Public Sector. International Journal of Research and Innovation in Social Science.
The Digger (2026). Unraveling the Recovery Narrative: A Forensic Analysis of Nigeria’s ₦1.233 Trillion Corruption Recovery Claims.
The Guardian Nigeria (2025). Nigeria improves ranking in 2024 global corruption index.
Trading Economics (2025). Nigeria Corruption Index and Corruption Rank, Transparency International data series.
By
Aliyu Mohammed
Department of Management