The Federal Inland Revenue Service (FIRS) has announced that the National Identification Number (NIN) issued by the National Identity Management Commission (NIMC) will automatically serve as a Tax ID for individual Nigerians.
While speaking in a public awareness campaign on the new tax laws posted on X on Monday, the FIRS announced that for registered businesses, the RC number issued by the Corporate Affairs Commission (CAC) automatically becomes their tax ID under the new tax system.
Moreover, this development is part of the Nigeria Tax Administration Act (NTAA), which comes into effect in January 2026, and aims to simplify tax administration and improve compliance.
“The Tax ID unifies all TINS previously issued by FIRS and states IRS into a single identifier.
“For individuals, your NIN automatically serves as your Tax ID, while for registered companies, your CAC RC number is used.
“You do not need a physical card; the Tax ID is a unique number linked directly to your identity,” the FIRS shared.
The FIRS stressed that this requirement has been in place since the Finance Act 2019 and has been strengthened under the NTAA.