From January 2026, Nigeria will adopt a unified tax identification system in which the National Identification Number (NIN) for individuals and the Corporate Affairs Commission (CAC) registration number for businesses will serve as official Tax Identification Numbers. The clarification was issued by the Federal Inland Revenue Service, FIRS, as part of a public awareness campaign on the new tax laws, following growing public concern about tax compliance requirements tied to everyday financial activities.
The FIRS explained that under the new framework, individuals who already have a NIN will not be required to apply for a separate Tax Identification Number. In the same way, registered businesses will use their existing CAC registration or RC numbers as their tax identifiers. According to the agency, this approach removes duplication and simplifies the identification process within Nigeria’s tax system.
The policy is anchored on the Nigeria Tax Administration Act, NTAA, which is scheduled to take effect in January 2026. While public debate around the law has intensified in recent weeks, the FIRS noted that the requirement for a Tax ID is not entirely new. It has existed since the Finance Act of 2019 but has now been strengthened and harmonised into a single national system.
In explaining the reform, the FIRS stated that the new Tax ID structure unifies all previously issued tax numbers by the federal and state revenue authorities into one identifier linked directly to a person or company’s legal identity. For individuals, this identifier is the NIN, while for companies, it is the CAC registration number. The Service emphasised that there will be no physical Tax ID card, as the system is fully digital and integrated across relevant government and financial platforms.
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According to the FIRS, the objective of the reform is to improve efficiency in tax administration, eliminate multiple records for the same taxpayer, close gaps that enable tax evasion, and promote fairness in the tax system. The agency stressed that the reform is designed to ensure that Nigerians who earn taxable income are properly identified and captured, while also reducing unnecessary administrative hurdles.
Public concerns have largely centred on provisions of the new tax laws that require a Tax ID for certain transactions, including banking and financial services. In response, the FIRS clarified that Nigerians with valid NINs and businesses with CAC registration numbers already meet this requirement and do not need to take additional steps to obtain a separate tax number.
Further insight was provided by the Chairman of the Presidential Committee on Fiscal Policy and Tax Reforms, Taiwo Oyedele, who disclosed that banks will be required to request Tax ID details from taxable Nigerians as part of the new tax administration framework. He explained that this measure is intended to strengthen compliance and improve the integrity of the tax system, not to restrict access to banking services for compliant citizens.
The reform is taking place against the backdrop of Nigeria’s broader efforts to modernise its public finance and revenue systems. With over 120 million Nigerians already issued NINs by the National Identity Management Commission, the government believes the foundation is in place for a smoother transition to a unified tax identification structure.
The FIRS has urged Nigerians to rely on official information and disregard misinformation surrounding the reform. As the January 2026 implementation date approaches, the Service advised individuals and businesses to ensure their NIN and CAC records are accurate and up to date.
By linking tax identification directly to existing national identity systems, the government says it aims to build a more transparent, efficient and credible tax administration framework that supports economic governance without imposing unnecessary burdens on citizens or businesses.
