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FIRS / SIRS — Quick Reference

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Required Documents

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Registration Process

TIN Registration in Nigeria — Complete Guide

The TIN (Tax Identification Number) is issued by the Federal Inland Revenue Service (federal taxes) / State Internal Revenue Service (state taxes) (FIRS / SIRS) in Nigeria. Registration is free and typically takes Instant (auto-assigned via CAC/JTB) to 72 hours. Nigeria offers online TIN registration through the FIRS / SIRS portal, making the process accessible from anywhere. The TIN is governed by the Nigeria Tax Administration Act 2025 (NTA); Companies Income Tax Act (CITA); FIRS Establishment Act 2007 and administered by the Federal Ministry of Finance.

All businesses operating in Nigeria and individuals in formal employment are required to register for a TIN. The TIN is a 10-digit numeric (auto-assigned via BVN/NIN or CAC) identifier needed for tax filing, business bank accounts, government contracts, and customs clearance. Failure to register carries penalties: nGN 50,000 for individuals; NGN 500,000 for companies (per NTA 2025).

⚠️ Disclaimer This tool provides general information only. Tax laws and registration requirements change frequently. Always verify with FIRS / SIRS or a qualified tax advisor for the latest requirements.