IFRS Sustainability Reporting in Nigeria: What CFOs Must Do Before the 2028 Deadline

IFRS sustainability reporting in Nigeria becomes mandatory for public interest entities, including every public company, for accounting periods beginning on or after 1 January 2028. For a company with a December year-end, the FY2028 annual report must carry IFRS S1 and IFRS S2 disclosures. Small and medium-sized entities follow from 1 January 2030.

The Securities and Exchange Commission (SEC) put the date back on boardroom agendas with a circular published on 23 September 2026 under the Investments and Securities Act 2025. It required public companies and significant public interest capital market operators to file an implementation plan by 15 October 2026. That deadline has passed. Filing a plan was the easy part. The harder work is building the data, controls and governance that the plan promised, and most of that has to happen in 2027.

What did the SEC circular require?

The circular asked each covered entity to submit its implementation plan, together with the challenges it expects. The plan had to cover eight minimum items:

1. Governance arrangements for sustainability reporting, including board oversight
2. A gap assessment against IFRS S1 and IFRS S2
3. An implementation roadmap and timelines
4. Data collection and reporting systems
5. Internal control and assurance arrangements
6. Capacity building and training plans
7. The expected year of first reporting under the FRCN roadmap
8. Key implementation challenges

The circular sets no penalty for a late or thin plan. It says the SEC will "monitor compliance with the implementation timelines" as part of its oversight of financial reporting and corporate governance. A board that treats the October filing as the finish line is reading it wrongly.

Who does IFRS sustainability reporting in Nigeria apply to?

The SEC circular repeats the Financial Reporting Council of Nigeria (FRCN) roadmap. The phases are:

Phase | Who | Accounting periods

• Early adoption | Any entity that chose to adopt | Ending on or before 31 December 2023
• Voluntary adoption | Entities not yet required to report | 1 January 2024 to 31 December 2027
• Mandatory | Public interest entities, including all public companies and significant public interest capital market operators | Beginning on or after 1 January 2028
• Mandatory | SMEs | Beginning on or after 1 January 2030

Private companies outside these groups are not caught until 2030 on the roadmap. Many will feel it earlier, though, because a listed customer reporting under IFRS S2 needs data from the businesses in its value chain.

Why is 2027 the real deadline?

A FY2028 report covers transactions from 1 January 2028. If your emissions data, risk registers and controls are not working on that date, the first year of reported numbers will be built on estimates you cannot defend. The sensible path is a full dry run on FY2027 data, so that problems surface while the numbers are still private.

There is also a timing clash. IFRS 18, the new presentation standard, takes effect for periods beginning on or after 1 January 2027, so the same finance team will be redesigning its income statement in 2027 and building sustainability reporting at the same time. We covered the IFRS 18 changes in IFRS 18 in Nigeria: what changes in 2027. Writing in Business A.M on 28 September 2026, Innocent Okwuosa noted that under the FRCN's phased process, December year-end mandatory adopters are due to submit their first three implementation documents by October 2027.

What reliefs does IFRS S1 allow in the first year?

The ISSB built transition reliefs into IFRS S1 for an entity's first annual reporting period. The main ones are:

• Climate first: an entity may report only on climate-related risks and opportunities in year one, and add other sustainability topics from year two.
• No comparatives: comparative figures are not required in the first year.
• Scope 3 relief: IFRS S2 does not require Scope 3 (value chain) greenhouse gas emissions in the first year.
• Later publication: the first sustainability report may be published after the financial statements, within set limits.

Confirm with your auditors and the FRCN guidance how these reliefs apply locally before you build your plan around them. Relief delays the disclosure. It does not delay the data work.

What this means for your business

For a CFO, IFRS S2 is a financial reporting problem more than an environmental one. The standard requires sustainability disclosures to connect to the financial statements. If your sustainability report describes a serious climate risk to an asset, your auditors will ask why that risk is not reflected in impairment testing or useful-life estimates.

Five practical steps for 2027:

1. Give it a board owner. Assign oversight to the audit or risk committee and minute it. Governance is the first disclosure IFRS S1 asks for.
2. Start with Scope 1 and 2. For most Nigerian companies these come down to diesel for generators, grid electricity, gas and fleet fuel. Start the data trail from purchase records already in your ledger.
3. Put sustainability data under financial controls. Use the same sign-offs, reconciliations and audit trail you use for revenue.
4. Align your assumptions. The oil price, carbon cost and demand scenarios in your climate analysis should match those used in your budget, impairment and going concern work.
5. Budget for it now. Systems, training and advisory costs belong in the 2027 budget. Our guide on how to build a 2027 budget in Nigeria sets out the assumptions to test.

Sector exposure varies. Oil and gas, construction and shipping companies carry heavy direct emissions. Banks face a different burden: IFRS S2 asks commercial banks to disclose financed emissions, which means collecting data from their borrowers.

FAQ

When does IFRS S1 and S2 reporting become mandatory in Nigeria? For public interest entities, including all public companies, it applies to accounting periods beginning on or after 1 January 2028. SMEs follow for periods beginning on or after 1 January 2030. Until then, adoption is voluntary.

Does a private company need to report under IFRS S2 in 2028? Not on the FRCN roadmap, unless it is a public interest entity. However, listed customers and lenders may request emissions and climate-risk data from private suppliers and borrowers, so preparing early protects those relationships.

What if we missed the SEC's 15 October 2026 plan deadline? The circular states no specific penalty, but the SEC said it will monitor compliance with the timelines. File the plan as soon as possible and keep a record of the board's approval.

VOG Global Consult helps Nigerian boards and finance teams run IFRS S1 and S2 gap assessments, set up sustainability data controls and prepare for assurance before 2028. Contact our Abuja team at vog.global to plan your 2027 dry run.