Common Tax Audit Issues and Challenges: Insights from FIRS Audits in Nigeria.





For businesses operating in Nigeria, tax audits conducted by the Federal Inland Revenue Service (FIRS) are a critical part of ensuring tax compliance and maintaining the integrity of the tax system. As an audit firm, we have observed common tax audit issues and challenges faced by businesses during FIRS audits. In this article, we will provide insights into these common audit issues and challenges and offer guidance on how companies can proactively address them to ensure a smooth and successful tax audit experience.


  1. Inadequate Record Keeping:

One of the most prevalent challenges during FIRS audits is inadequate record keeping. Businesses are required to maintain accurate and detailed financial records to support their tax returns and comply with tax laws. However, some companies struggle with disorganized or incomplete records, which can lead to difficulties in providing necessary documentation during the audit.

Solution: Implement robust record-keeping practices and maintain organized financial records. Companies should keep copies of invoices, receipts, bank statements, tax returns, and other relevant documents securely and in a retrievable manner. Consider adopting digital record-keeping systems for added efficiency and accessibility.


  1. Non-Compliance with Transfer Pricing Rules:

Transfer pricing is a significant concern for multinational companies and those with related-party transactions. The FIRS closely scrutinizes transfer pricing practices to ensure transactions between related entities are conducted at arm’s length and comply with transfer pricing regulations.

Solution: Companies engaging in related-party transactions should conduct transfer pricing studies and documentation to justify the pricing methodologies used. Adhering to the arm’s length principle and complying with transfer pricing regulations can prevent issues during a tax audit.


  1. Inconsistent or Underreported Income:

Inconsistencies between reported income and financial records can raise suspicion during a tax audit. Underreporting or misreporting income is a common issue faced by businesses, whether intentionally or unintentionally.

Solution: Ensure accurate reporting of income and adhere to proper accounting practices. Regularly reconcile financial statements with tax returns to identify and correct any discrepancies. Companies should also be transparent about all sources of income to avoid potential issues during audits.


  1. Questionable Deductions and Exemptions:

Claiming excessive or questionable deductions and exemptions can attract the attention of tax auditors. Companies need to provide valid documentation and explanations to support claimed deductions and exemptions.

Solution: Maintain proper documentation and valid justifications for all claimed deductions and exemptions. Engaging with tax professionals can help ensure that deductions and exemptions are compliant with tax regulations and supported by appropriate documentation.


  1. VAT Compliance Issues:

Value Added Tax (VAT) compliance is a significant aspect of tax audits. Auditors closely review companies’ VAT records and compliance with VAT regulations.

Solution: Companies should ensure proper VAT registration, timely and accurate VAT filings, and remittance of collected VAT to the FIRS. Conduct internal reviews of VAT compliance to identify and resolve any potential issues proactively.


  1. Lack of Knowledge on Tax Regulations:

Some businesses face challenges during tax audits due to a lack of understanding of the complex tax laws and regulations in Nigeria.

Solution: Invest in continuous tax education and training for employees involved in financial and tax matters. Engaging the services of experienced tax professionals can also provide valuable insights and ensure compliance with tax laws.



Being aware of common tax audit issues and challenges faced by businesses during FIRS audits is essential for companies seeking to maintain tax compliance and avoid unnecessary penalties. By implementing best practices in record keeping, transfer pricing, income reporting, deductions, and VAT compliance, Nigerian companies can enhance their readiness for tax audits. Additionally, seeking professional guidance and staying informed about evolving tax regulations can contribute to a successful tax audit experience. Remember, proactive tax compliance not only ensures adherence to the law but also fosters a positive relationship with tax authorities and enhances the company’s reputation in the business community.


For professional advice on Accountancy, Transfer Pricing, Tax, Assurance, Outsourcing, online accounting support, Company Registration, and CAC matters, please contact Sunmola David & CO (Chartered Accountants & Tax Practitioners) at Lagos, Ogun state Nigeria offices, You can also reach us via WhatsApp at +2348038460036.