Nigeria's top auditors earn N175bn as consulting surpasses core work
Nigeria’s leading accounting firms generated over N175 billion in 2025, but a shift toward high-margin advisory and tax services now dictates revenue rankings rather than client volume.
Nigeria’s seven largest audit firms collectively generated more than N175 billion in revenue during their 2025 financial years, according to mandatory Transparency Reports published by the Financial Reporting Council of Nigeria. The disclosures, which cover over 1,350 client entities, reveal a decisive industry shift where consulting and advisory fees now drive earnings far more than traditional audit work.
KPMG Professional Services recorded the highest revenue at N67 billion, surpassing PwC despite auditing fewer entities. While PwC led the field with 295 disclosed clients compared to KPMG’s 281, it trailed in total revenue by N11.64 billion, reporting N55.36 billion.
The divergence highlights how the profitability of Nigeria’s professional services sector is increasingly tied to non-audit engagements. At KPMG, non-audit services generated N49 billion, dwarfing the N18 billion brought in by statutory audits. Advisory and tax work for non-audit clients alone accounted for N41 billion, or more than 60% of the firm’s total revenue.
Ernst & Young reinforced this trend, with non-audit services contributing 67% of its N42.27 billion total revenue. PwC also reported higher revenue from non-audit sources, pulling in N30.46 billion compared to N24.9 billion from audit services. Across the largest firms, demand for technology, transaction advisory, and risk management is clearly outpacing baseline regulatory compliance.
The financial gulf between the largest firms and mid-tier competitors remains vast, even among those with substantial client rosters. BDO Professional Services audited 209 entities but generated just N4.139 billion. Grant Thornton reported N3.41 billion from 171 clients, and Forvis Mazars earned N3.55 billion from 46 entities.
Deloitte & Touche published a client list of 125 major entities, including Dangote Industries and Airtel Networks, but withheld its revenue figures. As a result, the combined N175 billion industry total underrepresents the true market size.
For investors, the data underscores where Nigeria’s largest corporations are allocating capital beyond compliance. The firms auditing the country’s major banks, energy companies, and telcos are now primarily functioning as broad management consultancies, signaling robust corporate demand for strategic and operational advisory.
