Country deep dive
Nigeria moved fast: the Merchant Buyer Solution was announced in late 2024 (November, per Deloitte), unveiled in April 2025, and live for large taxpayers by 1 August 2025 -- with the compliance deadline extended once (to 1 November 2025), penalties becoming statutory on 1 January 2026 under the Nigeria Tax Administration Act, and a hard final large-taxpayer deadline of 31 July 2026. Medium taxpayers followed from 1 July 2026, and businesses below NGN 1 billion turnover join from 1 July 2027.
In late 2024 (November, per Deloitte), Nigeria's Federal Inland Revenue Service announced a national e-invoicing initiative -- the Merchant Buyer Solution (FIRSMBS) -- applying continuous transaction controls to B2B and B2G invoices and near-real-time reporting to B2C sales. The platform was publicly unveiled and demonstrated to stakeholders on 29 April 2025, with 16 service providers (system integrators and access-point providers) certified via NITDA ahead of launch.
On 26 June 2025 President Tinubu signed four tax reform acts (the Nigeria Tax Act, Nigeria Tax Administration Act, Nigeria Revenue Service (Establishment) Act, and Joint Revenue Board Act), effective 1 January 2026. The package renamed FIRS to the Nigeria Revenue Service (NRS) and -- critically for e-invoicing -- put the fiscalisation regime's penalties on a statutory footing: from 1 January 2026, failing to process taxable supplies through the e-invoicing system carries a NGN 200,000 penalty plus 100% of the tax due plus interest.
On 1 August 2025 the Merchant Buyer Solution went live for large taxpayers (annual turnover of NGN 5 billion and above), with MTN Nigeria, Huawei Nigeria and IHS Nigeria transmitting the country's first live cleared e-invoices. Nigeria's model is pre-clearance for B2B/B2G -- each invoice is validated by the platform before delivery to the buyer, receiving a unique Invoice Reference Number (IRN) and cryptographic stamp with QR code -- plus 24-hour e-reporting for B2C sales. About 1,000 of the ~5,000 targeted large taxpayers onboarded within the first two weeks; the initial compliance deadline was extended in mid-August to 1 November 2025.
On 26 September 2025 OpenPeppol listed Nigeria's tax authority as a Peppol Authority -- the first African country on OpenPeppol's authority list -- governing the local Peppol network, onboarding access-point providers, and registering Nigeria's TIN under ISO/IEC 6523. The FIRS e-invoice schema follows UBL/Peppol BIS Billing 3.0 conventions (submitted as XML or JSON), placing Nigeria in the same Peppol-exchange-with-tax-clearance family as the newest European and Gulf designs. The listing now reads "Nigeria Revenue Service (NRS)" following the authority's 1 January 2026 rename.
FIRS extended the large-taxpayer compliance deadline from 1 August to 1 November 2025 (announced mid-August 2025), keeping the go-live date but giving the ~5,000 businesses in scope three further months to complete onboarding and integration. Penalties became legally enforceable on 1 January 2026 under the Nigeria Tax Administration Act, though operational grace continued into 2026.
Under the NRS's phased schedule (public notice of 17 February 2026), medium taxpayers -- annual turnover between NGN 1 billion and NGN 5 billion -- became subject to mandatory e-invoicing from 1 July 2026, following an April-June 2026 pilot. A penalty soft-landing applies until enforcement begins in the January-March 2027 window.
The NRS set 31 July 2026 as the hard final deadline for large taxpayers to complete onboarding and live IRN transmission through the MBS, with compliance monitoring and enforcement actions from August 2026. Over 1,000 companies were compliant as of Q1 2026 (NRS chairman Zacch Adedeji) out of roughly 5,000 in scope -- non-compliant invoices carry the NGN 200,000 + 100%-of-tax penalty, and buyers lose the input-VAT credit on invoices issued outside the system.
The final wave of the NRS phased schedule: taxpayers below NGN 1 billion turnover become subject to mandatory e-invoicing from 1 July 2027, with enforcement from the January-March 2028 window. Micro businesses below NGN 50 million turnover -- under Nigeria's VAT registration threshold -- are exempt.
Nigeria's e-invoice schema follows UBL / Peppol BIS Billing 3.0 conventions, submitted as XML or JSON through certified service providers. Each B2B/B2G invoice is validated by the platform BEFORE delivery to the buyer -- pre-clearance -- receiving a unique Invoice Reference Number (IRN) and a Cryptographic Stamp Identifier (CSID), with a QR code embedded for verification of printed or PDF renderings. B2C sales are instead reported to the platform within 24 hours of issuance.
A reported ~55 mandatory data fields and a PDF/A-3-with-embedded-XML option appear in one industry briefing only -- treat as plausible. EY describes the exchange layer as a Peppol four-corner model with tax-authority clearance on top.
The rollout is staged by annual turnover: NGN 5 billion and above (large) live since 1 August 2025 with enforcement from August 2026; NGN 1-5 billion (medium) from 1 July 2026 with enforcement from early 2027; below NGN 1 billion (emerging/small) from 1 July 2027 with enforcement from early 2028. Micro businesses below NGN 50 million turnover -- under Nigeria's VAT registration threshold -- are exempt. Coverage spans B2B, B2G and B2C (via 24-hour reporting) for VAT-taxable supplies, including cross-border transactions.
A compliant Nigerian B2B/B2G invoice moves through this sequence:
An invoice issued outside the MBS carries real consequences on both sides: the issuer faces the NGN 200,000 + 100%-of-tax penalty, and the buyer loses the input-VAT credit.
Large and medium taxpayers should already be live; the practical path runs through a valid TIN (migrating to the new Tax ID is the most-reported onboarding pain point), portal registration, a certified system integrator or access-point provider, sandbox testing, then production IRN transmission. Smaller businesses have runway to July 2027 -- and 16+ certified providers plus a portal channel to lower the entry cost.
Confirm your TIN is valid and complete the migration to the new Tax ID where applicable -- this is the most commonly reported onboarding blocker under the 2026 tax-reform transition.
Onboard at einvoice.firs.gov.ng (email verification required) and confirm which rollout wave your turnover places you in.
Select from the NITDA-certified system integrators and access-point providers (16 at launch, including Interswitch, Remita and eTranzact) for production integration via their RESTful APIs -- or use the portal channel for low volumes.
Complete sandbox validation against the NRS guidelines before production cutover -- go-live means live IRN transmission on every B2B/B2G invoice, not just completed registration.
Set up the 24-hour B2C reporting flow, and train AP staff to verify that inbound supplier invoices carry valid IRNs -- an invoice outside the MBS costs you the input-VAT credit.
Retain cleared invoices and their IRN/CSID records (retention-period sources conflict -- see the note above; 6 years is the conservative floor reported), and watch NRS notices: the phased schedule has already shifted once.
The Nigeria Tax Administration Act 2025 put the penalties on a statutory footing from 1 January 2026: NGN 200,000 plus 100% of the tax due plus interest for processing taxable supplies outside the fiscalisation system, escalating daily fines for refusing platform access, and -- the buyer-side lever -- denial of the input-VAT credit on any invoice issued outside the MBS.
Other countries in the same region, ordered by their next dated milestone. Each links to a full briefing.