Nigeria Tax ID explained: who needs one and what banks require

On December 15, 2025, Fidelity Bank told customers that accounts without a tax ID or national identity number “may be restricted from transacting as from January 1, 2026.” About two weeks later it was telling them something different. The Nigeria Tax ID behind both messages comes from the Nigeria Tax Administration Act 2025, which requires every taxable person to register and hold one, and requires banks to collect it from taxable customers.

Quick answer: Section 4 of the Nigeria Tax Administration Act 2025 says every taxable person must register and obtain a Tax ID. Section 8(2) says banks, insurers and stockbrokers must ensure every taxable person provides one. People with no income from trade, business or other economic activity, such as students and dependents, are not taxable persons under the Act, according to the government’s tax reform chief. Tax authorities said on December 22, 2025 that no bank account would be restricted on January 1, 2026 for lack of a Tax ID.

The law took effect on January 1, 2026, the same day the Federal Inland Revenue Service (FIRS) became the Nigeria Revenue Service (NRS) and the Joint Tax Board (JTB), which coordinates federal and state tax authorities, became the Joint Revenue Board (JRB). Older guidance and many bank notices still use the old names.

Much of the confusion comes from three separate questions that tend to get blurred: who has to have a Tax ID, what the number actually is, and what banks are allowed to do about it.

What does the Nigeria Tax Administration Act say about the Tax ID?

The Act, published in the Federal Government’s Official Gazette on June 26, 2025 as Act No. 5 of 2025, deals with registration in its Part II. The wording is short.

Section	What it says
4	Every taxable person must register with the relevant tax authority and obtain a Tax ID
5	Every federal and state ministry, department, agency and local government must register and obtain a Tax ID
6	Non-residents supplying taxable goods or services to Nigeria must register; those with only passive investment income may not need to
7	The tax authority must issue a Tax ID on request, may register a person who failed to apply, and may not issue a second one
8(2)	Anyone in banking, insurance, stockbroking or other financial services must ensure every taxable person provides a Tax ID
100	Failing to register under section 4 carries a penalty of 50,000 naira (about $37) for the first month and 25,000 naira (about $19) for each further month

Source: Nigeria Tax Administration Act 2025, Official Gazette No. 117, June 26, 2025. Dollar figures at about 1,333 naira per dollar, the Central Bank of Nigeria’s official market rate in mid-October 2026.

Two words in section 8(2) matter more than the rest: “taxable person.” The banking duty is not written as a rule for every account holder. It applies to customers who fall inside that definition.

Section 7(3) is also easy to miss. It lets the tax authority register someone and issue a Tax ID “based on the information available to it,” then notify them. That is the legal hook for the automatic issuance officials later described.

Who counts as a taxable person, and who is exempt?

The Act defines a taxable person as someone who carries out economic activity, or who exploits tangible or intangible property, to earn income by way of trade or business. Government agencies acting in that role are included.

Taiwo Oyedele, chairman of the Presidential Committee on Fiscal Policy and Tax Reforms, described it in plainer terms in December 2025: someone who earns income through trade, business or any economic activity. He said people who do not earn income, including students and dependents, “do not need to obtain a tax ID,” as reported by Peoples Gazette and the International Centre for Investigative Reporting (ICIR).

That leaves grey areas the officials’ statements do not settle. A retiree living on a pension, a person with only rental income from one flat, or someone paid informally in cash may or may not be treated as taxable persons in practice. The Act’s definition includes exploiting property for income, which would seem to cover landlords, but no official guidance we found spells out each case.

Being a taxable person and owing tax are different things. The wider 2025 reforms changed the income level at which personal income tax starts, and Oyedele has said most workers will pay no tax or less tax. A person can be required to hold a Tax ID and still owe nothing.

Is your NIN your Tax ID?

This is where official sources do not line up neatly.

On December 22, 2025, FIRS said in a public awareness campaign: “For individuals, your NIN automatically serves as your Tax ID, while for registered companies, your CAC RC number is used,” according to the ICIR. The NIN is the 11-digit National Identification Number issued by the National Identity Management Commission (NIMC). The RC number is a company’s registration number with the Corporate Affairs Commission (CAC).

A week later, the JRB and NRS announced a Tax ID portal. According to the announcement, republished by the Federal Capital Territory Internal Revenue Service, a person enters their 11-digit NIN and the portal displays a 13-digit Tax ID.

So the two descriptions differ. One says the NIN is the Tax ID. The other describes a separate 13-digit number generated from, and linked to, the NIN. Both agree that a person with a NIN does not need to fill in a separate application, and that the JRB issues Tax IDs automatically to taxable individuals from their NIN, as it said on December 22, 2025. Which number a bank or a tax form will ask for has not been spelled out the same way by every authority.

What happens to an existing TIN?

Many Nigerians already hold a Taxpayer Identification Number (TIN) issued by FIRS or a state tax authority. Here the sources also diverge.

• Oyedele said in late 2025 that “your existing TIN remains valid” and that people who already hold one do not need to register again, as reported by Technology Times and Peoples Gazette.
• Fidelity Bank told customers that existing TINs remain valid and that they do not need a new TIN to operate their accounts.
• The JRB and NRS portal announcement, as published by the FCT Internal Revenue Service, describes the new Tax ID as “replacing previously issued TINs.”

These can both be true if the old TIN is absorbed into the new unified number, which is what FIRS described when it said the Tax ID unifies all TINs it had issued. Section 7(5) of the Act also bars anyone with a valid Tax ID from being issued a second one, and section 7(6) asks for multiple IDs to be reported “for unification.” What no source we found states clearly is whether a pre-2026 TIN printed on old documents is still accepted as the number itself.

How to check your Tax ID on the official portal

The portal went live on January 1, 2026 at taxid.jrb.gov.ng and taxid.nrs.gov.ng. Both addresses loaded when we checked on October 27, 2026. The steps below follow the JRB and NRS announcement.

1. Open either portal and choose the “Individual” tab.
2. Select National Identification Number (NIN) and enter the 11-digit number.
3. Click “Retrieve Tax ID.”
4. Enter your first name, last name and date of birth exactly as they appear in your NIMC record.
5. Continue to see the 13-digit Tax ID on screen.

Businesses use the “Corporate” tab, choose their organization type, enter the CAC registration number and click “Retrieve Tax ID.” FIRS said no physical card is needed. Officials have also pointed people to their nearest NRS, state tax or JRB office for help. The two addresses above are the only ones the authorities published in that announcement; some news reports have printed them with typing errors.

What did banks actually do?

The bank story moved fast, and in more than one direction.

• December 11, 2025: Oyedele said in an interview shared on X that “any taxable entity without a tax ID may have difficulty running their bank account in the near future,” citing section 4.
• December 15, 2025: Fidelity Bank told customers that accounts without a tax ID or NIN “may be restricted from transacting as from January 1, 2026,” and asked them to update their NIN, according to Peoples Gazette.
• December 22, 2025: The JRB said there would be “no restrictions placed on bank accounts or financial transactions effective January 1, 2026” for lack of a Tax ID, and no deductions from accounts over it. FIRS said the NIN served as the Tax ID the same day.
• December 29, 2025: The JRB and NRS announced the Tax ID portal.
• January 1, 2026: The Act took effect and the NRS replaced FIRS. Around this date Fidelity told customers that those without a TIN “can continue operating their accounts without restriction,” while still asking them to link their NIN, Peoples Gazette reported.

The two Fidelity messages are less contradictory than they first look. Both asked customers to put a NIN on their accounts. What changed was the threat of a restriction for customers who had no TIN.

The rule is older than the panic

FIRS and Oyedele both said the requirement for banks to collect tax IDs is not new. They disagree slightly on its origin: FIRS dated it to the Finance Act 2019, while Oyedele pointed to the 2020 Finance Act and said company and business accounts have needed a TIN since 2020. Either way, the 2025 Act restated the duty with a firmer legal basis and attached penalties to failing to register.

What the Act does not contain is a date by which banks must freeze accounts, or any power for banks to close an account on their own over a missing Tax ID. Section 8(2) puts the duty on the institution to “ensure” taxable customers provide one. How banks enforce that, and whether the NRS or the Central Bank issues a circular setting out the procedure, is the open question.

Watch for: a Central Bank of Nigeria circular or NRS guideline on how banks must collect Tax IDs from existing customers. Any deadline for restricting accounts would carry far more weight in a regulator’s document than in a bank’s text message.

A bank notice that names a specific section or circular, and says whether it covers all customers or only “taxable persons,” is easier to check against the law than one that does neither. Fidelity’s December notice gave a date but cited the Act under the wrong name, calling it the “Nigerian Tax Identification Act.”

This article is for information only and is not legal or tax advice.