IFRS S1: the general requirements, paragraph by paragraph

Its full title is IFRS S1 General Requirements for Disclosure of Sustainability-related Financial Information.

The International Sustainability Standards Board was formed on 3 November 2021 and issued IFRS S1 and IFRS S2 together in June 2023.

The approval note at the end of the text records that IFRS S1 was approved for issue by all 14 members of the Board at the time.

IFRS S1 states its own structure: paragraphs 1–86 and Appendices A–E, and “all paragraphs have equal authority”.

So an appendix is not commentary — Appendix E’s reliefs bind exactly as the body does.

The navigator page gives the effective date in one sentence: annual reporting periods beginning on or after 1 January 2024, with earlier application permitted as long as IFRS S2 is also applied.

The text is free to read without registering, on the IFRS Foundation’s own site; the Sustainability Standards Navigator asks for registration only for the PDFs.

The December 2025 amendments touched IFRS S2 only, which is why the S1 text served today still carries the stamp “June 2023”.

IFRS S1 is the architecture; IFRS S2 is the first topic standard built on it, and the wider set sits on the ISSB framework page.

IFRS S1 ¶10 sets the bar: information must be relevant and faithfully represent what it purports to represent.

Its usefulness is enhanced if it is comparable, verifiable, timely and understandable.

¶13 spells out faithful representation as a depiction that is complete, neutral and accurate.

Appendix D adds three sentences worth keeping beside any draft.

“Comparability is not uniformity.”

“A neutral discussion of such matters covers both aspirations and the factors that could prevent an entity from achieving these aspirations.”

“The exercise of prudence means that opportunities are not overstated and risks are not understated.”

Verifiability means knowledgeable, independent observers could reach consensus, though not necessarily complete agreement — which is what an assurance provider will test against.

UK SRS S1’s Appendix D is not in Annex A, so it is the same text.

¶60 puts the disclosures inside the entity’s general purpose financial reports.

¶61 says they could sit in management commentary, which may be called a management report, management’s discussion and analysis, an operating and financial review, an integrated report or a strategic report.

¶64 requires them at the same time as the related financial statements and for the same reporting period.

¶70 requires comparatives for the preceding period for every amount disclosed.

Appendix E then relaxes several of these for the first years, which is where IFRS S1 and UK SRS S1 part company.

For where a UK report physically sits — the strategic report, the directors’ report or elsewhere — see UK SRS S1 and S2.

Annex A of the government response is exhaustive by its own rule: “Where requirements in the standards are not included in the table, there are no differences between the two.”

For S1, almost everything it lists sits in the transition appendix and the compliance machinery.

The materiality test, the four core content areas, connected information and the timing rule are word for word the ISSB’s.

The UK changed the machinery around the standard, not what it asks an entity to disclose.

Two things are commonly said about the differences that are not true.

The UK did not move the effective date — it removed it.

And there is no official count of “UK amendments”: the government consulted on six proposals in June 2025, one was withdrawn, one was replaced by something wider, and ¶¶73A, 73B and E5 were added afterwards.

Every row is annotated on UK SRS amendments, and the change log for this page is on the amendments trail.

The same company can face three different timetables, depending on which text it applies.

Under IFRS S1, climate-only reporting lasts one year; non-climate topics arrive in year two, and their comparatives in year three.

Under UK SRS S1 used voluntarily, ¶E3 has no time limit, so a company can report climate only for as long as it chooses.

Each of those years costs it the right to state compliance with UK SRS S1 (¶73A), and non-climate comparatives are not needed until the second year after it stops (¶E4(b)).

Under the FCA’s final rules, PS26/19 ¶3.14 gives listed companies in scope two years’ non-disclosure of non-climate matters from initial application.

A company using that relief states that it is doing so and needs give no further explanation (¶3.20).

After it, UK SRS S1 is on comply or explain — disclose, or explain what is missing, why and the steps planned — not mandatory.

For first periods that do not begin on 1 January, the FCA’s rules page works through the dates.

The commonest mistake is writing “we comply with UK SRS S1” in a climate-only year; ¶73A forbids it.

The second is reading ¶E4(b)’s “second annual reporting period” as a two-year cap on the relief — it governs comparatives after the relief ends, not the relief itself.

The IFRS Foundation publishes two numbers, and they answer different questions.

More than 45 jurisdictions have decided to use or are taking steps to introduce the ISSB Standards, on the Trustees’ five-year plan of 18 August 2026 — a floor, and a count of intent.

Requirements had actually come into effect in 19 jurisdictions as at 24 February 2026.

The Foundation’s directory separates profiles, published once an approach is finalised, from snapshots, which preview proposals; re-counted on 10 September 2026 it carried 22 profiles and 14 snapshots.

Each profile carries the Foundation’s own classification — Australia’s, Hong Kong SAR’s, Japan’s and Singapore’s among them.

None of the profiled examples applies IFRS S1’s full topic scope to everyone today: Australia and Singapore stop at climate, Hong Kong SAR phases in, and Japan applies a functionally aligned national standard.

Adoption and mandate also stopped moving together in 2026: Brazil’s securities regulator removed its obligation for public companies in May 2026, and Canada’s regulators paused their mandatory rule in April 2025.

The UK snapshot pre-dates PS26/19 and records the regulatory stage as “In progress”.

The wider map, including the EU’s separate regime and the 2024 interoperability guidance, is on global sustainability standards; the overview of every framework sets them side by side, and the sister editorial reference takes the standards one by one.