NRS Mandatory Tax ID Nigeria Rule: Old TIN Validation API Officially Replaced

The Nigeria Revenue Service (NRS) and the Joint Revenue Board (JRB) have announced the mandatory rollout of a new, unified Taxpayer Identification (Tax ID) system.

This policy directive enforces Sections 6, 7, and 8 of the Nigeria Tax Administration Act, 2025, making it a legal obligation for every taxable entity in Nigeria to secure the new identity.

The sweeping reform eliminates the fragmented tax tracking systems of the past, introducing a single identity for both federal and state-level tax engagements.

Our investigation reveals that this update will immediately disrupt fintechs, banks, and government agencies that rely on legacy verification tools.

The Death of the TIN Validation API

The biggest casualty of this joint announcement is the complete decommissioning of the existing TIN Validation API.

All organizations, including financial institutions, that currently use the old API to verify customer tax profiles must migrate to the new network.

Failing to transition to the new system will completely halt automated user onboarding and corporate verification checks across Nigeria’s financial sector.

The government is positioning this transition as a critical step toward data harmonization and reducing national tax leakages.

How to Access the New Tax ID API Integration Guidelines

The NRS and JRB have split the administrative responsibilities for the new API access based on business structures.

For individuals, enterprises, and registered business names, organizations must coordinate with the JRB’s Standardisation and Modernisation Department via smd@jrb.gov.ng.

For corporate entities, integration requests and validation services are routed directly through the NRS Tax Automation Department via tax.automation@nrs.gov.ng.

Integrating agencies must apply formally to obtain the updated integration guidelines to prevent system downtime.

5 Key Benefits Enforced by Tax 3.0

1. Single Tax Identity: One unique number covers all state and federal tax transactions.

2. Simplified Compliance: Registration, filing, and payment processes are tied to a single dashboard.

3. Improved Transparency: Real-time tracking prevents back-dated entries and manual alterations.

4. Revenue Assurance: Automated tracking plugs leakages and flags anomalies instantly.

5. Data Harmonization: Immediate alignment of corporate assets across all tiers of government.