TIN for Business in Nigeria — Which Route by Entity Type (2026)

The Tax Identification question for a Nigerian business has a tidier 2026 shape when framed by entity type rather than by procedure. Five entity types account for nearly every business reader, and each has its own route to a Tax ID.

This article walks each route. The shared shape across all five is that the Tax ID itself is free at the Nigeria Revenue Service; the only paid step in the wider entity-tax compliance picture is the underlying CAC registration (₦10,000 statutory for a business name; the share-capital-banded scale for a Part A company) where one is needed, and any accredited-agent service fee where the reader engages one for the manual NRS route.

The audience for this article is business owners, founders, accountants, in-house company secretaries, and the partners or trustees of a non-CAC entity — narrower than the individual-taxpayer audience served by the TIN for individuals reference. Readers running a CAC-registered entity post-2020 will find the entity-side procedural walkthrough in fuller detail at the CAC-side article on getting a TIN after CAC registration; that article opens from the assumption that the TIN is on the certificate and walks the four edge cases that need a manual route.

The Nigeria Tax Administration Act 2025 and the Nigeria Tax Act 2025, signed on 26 June 2025 and effective from 1 January 2026, consolidated Nigerian federal tax administration into a unified procedural framework. Three pieces of the reform package touch the entity-side Tax ID question directly.

For an entity the substantive change is the identifier-stack consolidation. The CAC registration number itself — the RC for a Part A company, the BN for a Part C business name, the IT for Part F incorporated trustees, the LP or LLP for a Part B partnership — may now serve as the entity's Tax ID. The 13-digit Tax ID the NRS portal returns against the CAC-number lookup is the explicit format for downstream systems that expect it.

The pre-NTAA position was the June 2020 CAC-FIRS integration that wrote the TIN onto the CAC certificate at issuance; that flow continues to operate alongside the NTAA framework.

Two consequences for an entity. First, an entity registered at CAC after 29 June 2020 typically holds the Tax ID already — opening the certificate is the first check, not opening the NRS portal. Second, the Tax ID is no longer a separate post-incorporation application step for most entities; the CAC certificate carries it. Where the certificate predates the integration or the integration record is incomplete, the manual NRS route remains operational as the fallback rather than the routine path.

Section 100(2) of the NTAA introduces a separate enforcement layer: a penalty of ₦5,000,000 on any person (typically a company or government body) that awards a contract to a person required to register but who has not done so. The penalty falls on the awarder rather than on the unregistered party, but the practical consequence is that a corporate counterparty will refuse to transact with an entity that has no Tax ID against its record. Compliance is the practical bar; the penalty regime sets the tone of the enforcement intention.

For most CAC-registered entities, the Tax ID is on the certificate. The first action is to open the certificate, not the portal.

1. 1
   Open the CAC certificate from the iCRP dashboard
2. 2
   Where the TIN is on the certificate, no further action is needed
3. 3
   Open the Nigerian Tax ID Portal and click Corporate
4. 4
   Enter the CAC registration number
5. 5
   Read and save the 13-digit Tax ID

The route is free. The portal does not charge for issuance. The lookup typically completes in seconds for an entity in the NRS integration database. After retrieval, the next operational step for the entity is verification at the surfaces that will read the Tax ID against the entity record — see the how to verify a Nigerian TIN walkthrough for the verification flow.

Entities registered at CAC before 29 June 2020 sit outside the CAC-FIRS integration window. The route depends on whether the NRS database has backfilled the older CAC record into the integration index.

1. 1
   Try the portal lookup first
2. 2
   Check the legacy JRB portal for a 10-digit TIN against the historical record
3. 3
   Where neither portal returns a TIN — prepare the NRS manual bundle
4. 4
   Lodge the bundle at the nearest NRS tax office

The manual route is also free at the NRS desk. The cost of engaging an accredited tax agent or chartered accountant to run the bundle on behalf of the entity sits separately and is at the agent's published service rate; the DIY route at the NRS office is a first-class path that does not require an agent.

A non-CAC entity — a partnership operating under a state Partnership Law without a CAC registration, an unincorporated association with a tax-presence requirement, certain Part F trustees whose certificate of incorporation issued before the integration carries no TIN — has no CAC RC or BN to anchor the portal lookup. The route is the manual NRS tax-office application from the start.

1. 1
   Confirm the entity's constitutional document is in good order
2. 2
   Compile the principal officers' or partners' identification
3. 3
   Document the principal place of business address
4. 4
   Draft the covering letter and lodge the bundle
5. 5
   Receive the 13-digit Tax ID notice

The NRS application route is free. The constitutional document and the address documentation are the entity's own responsibility to prepare; an accredited tax agent or chartered accountant can run the bundle on the entity's behalf at the agent's service rate, but the DIY route at the NRS office is a first-class path.

The federal tax agencies were renamed under two 2025 establishment Acts that took effect on 1 January 2026, and the entity-side reader will encounter both names across CAC certificates, NRS notices, and bank correspondence during the transition.

• The Federal Inland Revenue Service (FIRS) was renamed the Nigeria Revenue Service (NRS) under the Nigeria Revenue Service (Establishment) Act 2025. The institution is the same; the name and the portal branding changed. The historic FIRS domain at firs.gov.ng now redirects to the NRS landing page. The legacy TaxProMax filing platform at taxpromax.firs.gov.ng is in transition to the new Rev360 platform.
• The Joint Tax Board (JTB) was renamed the Joint Revenue Board (JRB) under the Joint Revenue Board (Establishment) Act 2025. The JRB is the inter-government coordination body across NRS and the 36 state internal revenue services. The historic JTB domain at jtb.gov.ng currently displays JRB branding while operating as the same institution under the new name.

A CAC certificate issued in 2021 or 2022 quotes 'FIRS' in the TIN-field caption; the same TIN value is valid under the NRS framework. An NRS notice issued in 2026 quotes 'Nigeria Revenue Service' on the letterhead. An entity's bank correspondence may quote either name during the 2026 transition window. Nothing operational depends on which name appears on the page — the underlying Tax ID is the same against the entity record.

The Tax ID sits between the CAC registration and the wider compliance, banking, and government-service picture for an entity. Naming the surfaces helps the reader understand why the framework matters operationally.

• Tier 3 corporate bank-account opening. Major Nigerian banks (GTBank, Access, UBA, First Bank, Zenith, Stanbic IBTC, Fidelity, FCMB and similar) require the 13-digit Tax ID alongside the CAC certificate and the directors' BVN-NIN linkage at the corporate customer-due-diligence desk. The Tax ID is the identifier that the bank stores against the entity's account record for KYC compliance and for the NRS information-sharing protocols.
• CIT, VAT, WHT filing at NRS. The Tax ID is the single identifier across all NRS-administered federal tax lines. CIT filing for Part A companies (annual return relative to the entity's year-end), VAT filing (monthly remittance for VAT-registered entities), WHT remittance (monthly for entities deducting WHT on supplier payments), Capital Gains Tax filing (where applicable), and Stamp Duty on company instruments all reference the entity's Tax ID at filing.
• PAYE remittance at state IRS. An employing entity reads its own Tax ID at the state IRS PAYE schedule when it remits employee PAYE. The state IRS — LIRS for Lagos employers, FCT-IRS for FCT employers, OYIRS for Oyo, and the equivalent state IRS elsewhere — matches the employer's Tax ID against the employees' individual Tax IDs at reconciliation.
• Government-tender bidding. Federal and state procurement portals require the entity's Tax ID and a current Tax Clearance Certificate at submission. The Section 100(2) NTAA penalty regime tightens the awarder-side discipline; an entity without a Tax ID will not be considered.
• NRS Tax Clearance Certificate issuance. The entity's TCC application at the NRS e-TCC platform reads the Tax ID against the entity's filing and payment history across CIT, VAT, WHT, and other applicable federal tax lines for the three years of assessment preceding the application.
• CAC annual returns reconciliation. From 2026 the CAC and NRS share entity-side data through the integration; an entity's CAC annual return reads against the same Tax ID and supports the cross-checking of beneficial-ownership and director declarations.

The shared pattern is that the Tax ID is the federal identifier the financial-system, regulatory, and government-service surfaces query against. The CAC registration number is the underlying credential for the entity; the 13-digit Tax ID is the format the downstream surfaces store and verify against.

For an entity with employees the PAYE-side identifier sits at the State Internal Revenue Service of the state where the employer's PAYE-paying establishment is located. The Tax ID itself is uniform across the federation — the same 13-digit figure works at every state IRS — but the PAYE schedules, the remittance windows, and the dashboard layouts vary state by state.

State IRSes an entity is likely to encounter on the PAYE side:

• LIRS (Lagos State Internal Revenue Service) at lirs.gov.ng — the largest state IRS by taxpayer count, operating a mature e-TCC and PAYE schedule platform.
• FCT-IRS (Federal Capital Territory Internal Revenue Service) at fctirs.gov.ng — for entities with PAYE-paying establishments in the FCT.
• OYIRS (Oyo State Internal Revenue Service) — for entities in Oyo State including Ibadan.
• RIRS (Rivers State Internal Revenue Service) — for entities in Rivers State including Port Harcourt.
• KIRS (Kano State Internal Revenue Service) — for entities in Kano State.
• The 32 other state IRSes, each with its own portal and schedule.

NTAA 2026 implementation rolls out across state IRSes on differing schedules; the central Tax ID infrastructure at taxid.nrs.gov.ng is live federation-wide, but individual state-IRS portal updates to read the 13-digit Tax ID format may lag in particular jurisdictions. Where a state IRS portal still accepts only the legacy 10-digit format on the PAYE schedule, supply both identifiers; the underlying taxpayer record at the JRB-coordinated database is the same.

The entity-side Tax ID question connects out to several adjacent walkthroughs.

• How to get a TIN in Nigeria — the head walkthrough covering individual, entity, and legacy-record routes side by side.
• How to get a TIN after CAC registration — the CAC-side procedural walkthrough opening from the assumption that the TIN is on the certificate; walks the four entity-side edge cases in fuller detail.
• TIN for individuals — the individual-taxpayer counterpart, useful for sole proprietors operating without a CAC business name.
• How to verify a Nigerian TIN — the verification walkthrough for an entity Tax ID once issued; the routine next step after retrieval.
• Tax clearance certificate — the downstream compliance document an entity needs for tender bidding, Tier 3 corporate banking, and several other surfaces.
• How to register a business name — the CAC-side registration walkthrough for a sole proprietorship or partnership formalising as a Part C business name.
• How to register a limited company — the CAC-side walkthrough for incorporating a Part A company with the Tax ID coming on the certificate.