NIN to Double as Tax ID Under New FIRS Plan

Nigeria’s tax system is heading for a major shift, and this time, it starts with identity. The Federal Inland Revenue Service says the National Identification Number will automatically serve as the Tax Identification Number for individual Nigerians. For registered businesses, the Corporate Affairs Commission registration number will take on the same role.

The clarification was issued by the FIRS via its official X account as part of a public awareness drive around the country’s new tax laws, which are expected to take effect in January 2026.

The announcement comes amid rising public concern over provisions in the laws that require a tax ID for certain transactions, including owning and operating bank accounts.

According to the Service, “The Nigeria Tax Administration Act, set to take effect in January 2026, mandates the use of a Tax ID for specific transactions.” It added that the requirement itself is not new.

Why FIRS Says the Change Matters

The FIRS explained that Nigeria has required tax identification for years. However, the new law strengthens and harmonises the system under a single identifier.

“The Tax ID unifies all Tax Identification Numbers previously issued by the FIRS and State Internal Revenue Services into a single identifier,” the Service said. “For individuals, your NIN automatically serves as your Tax ID, while for registered companies, your CAC RC number is used.”

The agency stressed that taxpayers will not need a physical card. Instead, the identifier will remain a unique number linked directly to a person or business.

According to the FIRS, the reform is designed to simplify identification, remove duplication, curb tax evasion and promote fairness by ensuring that individuals with taxable income are captured within the system.

The Service also urged Nigerians to disregard misinformation surrounding the policy, insisting the framework is aimed at improving transparency and efficiency in tax administration.

Legal Concerns Cloud the Rollout

Despite the reassurance, the new tax laws have sparked controversy. In recent weeks, allegations of illegal alterations have followed the Nigeria Tax Administration Act, with critics questioning discrepancies between the version passed by lawmakers and the gazetted Act.

The Nigerian Bar Association has now joined calls for scrutiny. In a statement titled ‘Tax reform Acts: controversies cast doubts on the sanctity of Nigeria’s lawmaking processes’, the NBA said the situation raises serious questions about transparency and credibility within Nigeria’s legislative process.

The statement, signed by the association’s president, Mazi Afam Osigwe, called for a full and transparent investigation to clarify how the laws were enacted and to rebuild public trust.

“Until these issues are fully examined and resolved, all plans for the implementation should be immediately suspended,” the NBA said. The association warned that prolonged uncertainty could unsettle the business environment, weaken investor confidence and create compliance challenges for individuals and institutions.

“Legal and policy uncertainty of this magnitude has far-reaching consequences,” the statement added, stressing that such instability threatens economic order and the rule of law.

For now, while the FIRS insists the new system will simplify tax administration, the debate surrounding the law’s integrity may determine how smoothly the reforms take effect in 2026.