Choosing an IFRS S1/S2 Reporting Advisor: What to Look For

Why Does Advisor Selection Matter So Much Here?

IFRS S1/S2 compliance touches governance, financial reporting, GHG data architecture, scenario analysis, and — increasingly — external assurance. An advisor without depth across all of these areas will typically be strong in one dimension (say, disclosure drafting) while leaving the harder underlying work (data architecture, assurance readiness) underdeveloped. Because the standards are still relatively new and jurisdictional adoption is still evolving, the market includes advisors with genuine technical grounding alongside others repositioning general ESG consulting services under an "IFRS S1/S2" label without the underlying specialization to match.

What Credentials Should You Verify?

• Membership in the IFRS Sustainability Alliance or equivalent direct engagement with ISSB technical guidance, indicating the advisor tracks standard-setting developments as they happen rather than relying on secondhand summaries.
• Recognized GHG accounting credentials, such as CDP Accredited Solutions Provider status, which requires verified proficiency in corporate emissions measurement methodology — directly relevant to IFRS S2's metrics and targets pillar.
• ESG ratings expertise, such as EcoVadis Accredited Consulting Partner status, relevant where a company's IFRS S1/S2 disclosure program intersects with its broader ESG ratings strategy.
• The advisor's own sustainability accreditation, such as B Corp certification — evidence the firm has itself been assessed against a rigorous external standard, not only advised others on how to be.

What Jurisdictional Knowledge Should the Advisor Demonstrate?

Because IFRS S1/S2 adoption is jurisdiction-specific, an advisor should be able to speak concretely to:

• The current adoption status in every jurisdiction relevant to your group — not a generic statement that "adoption is progressing globally."
• How assurance requirements are phasing in across those same jurisdictions.
• How IFRS S1/S2 obligations interact with other frameworks your company may already report under, such as CSRD/ESRS.

An advisor who cannot speak to your specific jurisdictional footprint in concrete terms is likely working from general market knowledge rather than active, current tracking. See Who Must Comply with IFRS S1/S2? Scope and Adoption Timeline by Jurisdiction for the kind of jurisdiction-specific scoping a capable advisor should be able to walk you through for your own group.

What Services Should a Full-Service Advisor Offer?

A complete IFRS S1/S2 advisory engagement typically spans:

• Gap analysis — assessing current state against IFRS S1/S2 requirements across all four disclosure pillars. See How to Start Your IFRS S1/S2 Compliance Journey: A Gap Analysis Guide.
• Data architecture and scenario analysis — building the GHG accounting infrastructure and climate scenario modeling capability IFRS S2 requires.
• Disclosure design — drafting and structuring the actual disclosure content against the requirements set out in IFRS S1/S2 Reporting Checklist: What Your Disclosure Must Include.
• Assurance-readiness preparation — building the documentation, controls, and audit trail an external assurance provider will test, as described in How Does Assurance Work Under IFRS S1/S2 Sustainability Reporting?.

An advisor offering only one or two of these components will typically need to bring in additional partners for the rest — worth clarifying upfront rather than discovering mid-engagement.

What Questions Should You Ask Before Engaging?

• Can you walk me through the current IFRS S1/S2 adoption status in each of our specific operating jurisdictions?
• What GHG accounting and scenario analysis experience does your team bring, beyond disclosure drafting?
• Do you hold recognized accreditations relevant to this work, and are you willing to share them?
• Have you applied these same sustainability disclosure and ratings standards to your own organization?
• How do you structure the handoff between gap analysis, data architecture, disclosure design, and assurance readiness — is this one coordinated program or separate engagements?

How Semtrio Approaches This Work

Semtrio structures its IFRS S1/S2 advisory service as a coordinated program spanning gap analysis, data architecture and scenario analysis, disclosure design, and assurance-readiness preparation — rather than offering disclosure drafting in isolation.

Semtrio Note: Semtrio is a member of the IFRS Sustainability Alliance and holds CDP Accredited Solutions Provider, EcoVadis Accredited Consulting Partner, and B Corp status — the same credentials this article recommends verifying in any advisor, applied to Semtrio's own operations as well as client work.

Frequently Asked Questions

What credentials indicate genuine IFRS S1/S2 expertise?

Membership in the IFRS Sustainability Alliance, recognized GHG accounting credentials such as CDP Accredited Solutions Provider status, and evidence the advisor holds sustainability accreditations for its own operations, not only for clients.

Should an IFRS S1/S2 advisor know jurisdiction-specific adoption status?

Yes. Because adoption varies by jurisdiction, a capable advisor should be able to speak concretely to the adoption status and assurance timeline in every jurisdiction relevant to your organization.

What is the full scope of a proper IFRS S1/S2 advisory engagement?

Typically gap analysis, data architecture and scenario analysis, disclosure design, and assurance-readiness preparation, delivered as one coordinated program.

Why does it matter if an advisor applies these standards to its own operations?

It demonstrates practical, working familiarity with the standards rather than purely theoretical or advisory-only knowledge, which tends to produce more grounded, realistic guidance for clients.

How should an advisory engagement be structured?

As one coordinated program spanning gap analysis through assurance readiness, rather than fragmented, standalone engagements handed to different providers.

If you are evaluating advisors for your IFRS S1/S2 compliance program, Semtrio's team can walk you through our approach, credentials, and jurisdictional experience directly. Contact Semtrio to start the conversation.