16 Sep 2025
Auditing & tax firms in Nigeria play a critical role in ensuring transparency, accountability, and compliance within the corporate sector. Audit services ensure that financial statements are true, fair, and compliant with International Financial Reporting Standards (IFRS). They also help in internal control evaluation, forensic reviews, and risk assurance. Tax services cover corporate tax filing, VAT compliance, transfer pricing, tax planning, and resolution of disputes with the Federal Inland Revenue Service (FIRS) or state tax authorities. The Nigerian auditing sector is dominated by the Big Four ? KPMG, EY, PwC, and Deloitte ? which handle most large corporations and listed companies. Their global reach, technical expertise, and credibility make them trusted advisors. However, mid-tier firms like Crowe Dafinone, BDO, Grant Thornton, Nexia, Baker Tilly, and RSM play a vital role, especially for SMEs, indigenous companies, and businesses seeking cost-effective yet reliable services. Professional oversight is provided by the Financial Reporting Council of Nigeria (FRCN) and the Institute of Chartered Accountants of Nigeria (ICAN), ensuring quality and independence. As Nigeria?s economy grows, these firms are increasingly using digital auditing tools, data analytics, and automated tax solutions to improve efficiency and accuracy.
KPMG is Nigeria’s leading audit and tax firm by audit fee earnings. Known for auditing top banks, telecoms, oil & gas, and large corporates, it offers audit, assurance, tax compliance, transfer pricing, and risk advisory.
More infoEY ranks among the highest audit earners in Nigeria. It provides audit, tax advisory, transaction support, transfer pricing, and regulatory compliance to multinationals and large local firms.
More infoPwC Nigeria offers world-class auditing, assurance, and tax services. It is trusted by major corporations across financial services, telecoms, oil & gas, and government institutions.
More infoDeloitte is one of the Big Four with strength in audit, tax compliance, advisory, and digital tax solutions. It is widely used by banks and multinational clients.
More infoCrowe Dafinone is a Nigerian member of Crowe Global. It provides audit, tax, risk, and advisory services, with a strong reputation among mid-sized firms and family businesses.
More infoBDO Nigeria is a member of BDO International. It specializes in statutory audit, tax advisory, transfer pricing, VAT, and risk management solutions.
More infoGrant Thornton Nigeria offers tax, audit, and advisory services with strong recognition for its expertise in governance and compliance. It serves both corporates and government agencies.
More infomember of Nexia International, Nexia Agbo Abel provides professional auditing, tax compliance, and advisory services with emphasis on construction, oil & gas, and industrial clients.
More infoBaker Tilly Nigeria is part of Baker Tilly International. The firm is strong in audit, taxation, business advisory, and regulatory compliance for SMEs and corporates.
More infoRSM Nigeria is part of the global RSM network. It provides audit, tax, and consulting solutions to clients, with a strong reputation among growing enterprises and multinationals.
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