On 12 October 2026, European Securities and Markets Authority (ESMA) published two further thematic notes on sustainability-related claims to help market participants communicate more clearly with their investors. The notes form part of broader efforts to help firms manage greenwashing risks and ensure that investors are not misled by ESG claims.
The notes focus on impact claims related to funds and bonds, and climate transition claims used across funds, bonds and benchmarks. They offer useful and practical guidance, including setting out do’s and don’ts and practical examples of good and poor practice based on observed market practices, but are not intended to be prescriptive or create new regulatory guidance. As with the previous notes, they centre around four guiding principles that should inform and underpin sustainability related claims, namely that they should be accurate; accessible; substantiated; and up-to-date.
ESMA published notes on ESG credentials in July 2025 (the ‘first note’) and on ESG strategies in January 2026 (the ‘second note’). Other thematic notes will follow, as necessary.
Impact claims
This thematic note (the ‘third note’) examines impact claims made regarding funds and bonds. ESMA observes that market participants understand positive environmental or social impact differently and have varying levels of ambition. The note therefore encourages firms to explain clearly:
what positive impact they intend to make and how (‘intentionality’);
to what extent that positive impact might not otherwise happen (‘additionality’); and
how they will measure the impact generated (‘measurability’).
Points of interest
Specific to funds, ESMA strongly makes the point that impact generated by the investee (‘investee impact’) and impact generated through the investor’s actions (‘investor impact’) should not be conflated. ESMA observes that some funds fail to distinguish the two in their communications, presenting portfolio-level metrics derived from the impact of investee companies as evidence of investor-level impact. The note emphasises that funds should be clear as to whether they aim to generate investee impact, investor impact, or both.
ESMA reiterates that ambiguous or non-binding terms should not be used in describing impact objectives (e.g. investing in companies aligned with the UN Sustainable Development Goals), an area of high greenwashing risk which ESMA had previously identified in its 2023 progress report on greenwashing. ESMA warns firms not to make claims about generating positive impact without the theory of change clearly explaining how impact will be achieved.
Click here to view the full list of Do's and Don'ts
Type of claim
Do’s
Don’ts
Impact claims for both funds and bonds
Clarify the environmental or social problem(s) targeted and how the intended impact will be attained and measured.
Be clear about the ambition with reference to intentionality, additionality and measurability, which should be communicated consistently on the ambition.
Be clear about the impact-related criteria used for asset selection if the product targets investee impact.
Select relevant impact KPIs for which consider defining ex-ante targets.
Don’t make claims about generating positive impact without the theory of change clearly explaining how impact will be achieved.
Don’t rely on exclusion-based screening or ESG risk focused metrics as substitutes for impact-related criteria.
Don’t label products or underlying investments as “impact” solely due to asset class or sector.
Don’t present impact‑related concepts without making clear whether these concepts are actually embedded in the product’s strategy.
Don’t include disclaimers that distance the fund manager or issuer from responsibility for impact data or assumptions without explaining how their reliability is assessed.
Funds’ Impact claims
Define a clear impact objective, linked to specific environmental and/or social challenges.
Ensure consistency between ambition, impact objective and investment strategy incl. impact criteria and resources used for impact analysis or engagement.
Clarify whether the fund aims to generate investee impact, investor impact, or both.
If the fund targets investee impact, clarify how impact considerations influence investment decisions.
If the claim is limited to investee impact, be clear to investors that their investment does not bring additional environmental or social impact than the impact created by the investee companies.
If investor-level impact is targeted, explain which impact actions are used; how the investor impact will be monitored and/or quantified; avoid taking credit for impacts not attributable to the fund’s actions.
Don’t use ambiguous or non-binding terms in describing impact objectives (e.g. investing in companies aligned with the UN SDGs).
Don’t make references to investor-level impact without substantiation in connection to the impact actions.
Don’t imply that investor ownership of listed securities is, on its own, expected to generate impact.
Don’t claim simply that new investments in the fund will deliver extra positive impact.
Don’t reference impact-motivated engagement unless you clarify how this is different from standard ESG engagement.
Bonds’ impact claims
Ensure consistency between the bond’s impact claims and the issuer’s sustainability strategy.
Be transparent about the level of materiality of the projects financed (UoP) or targets selected (SLBs) to the issuer’s core business operations.
Explain how the bond issuance contributes to positive impact (link between proceeds/targets and claimed impact, how the issuance contributes to impact beyond business‑as‑usual financing).
For UoP, ensure that proceeds are allocated to clearly identifiable projects and that a verifiable funding link between the issuance and financed projects is available.
For SLBs, explain the ambition of the Sustainability Performance Targets (SPTs) and their relevance to material environmental or social challenges. Give explanations when SPTs are revised.
Report against objectives over time and explain how performance against KPIs or targets is monitored.
Don’t use unambitious or easily achievable KPIs as sole evidence of impact.
Don't make prominent impact claims for an SLB whose SPTs are not indicative of plausible positive environmental or social impact or are not linked to broader impact on people or the environment.
Don’t present project level KPIs prominently where the financed projects are not in line with the issuer’s core sustainability related operations.
Don’t fail to deliver on post‑issuance reporting that was committed to at issuance while continuing to reference positive pre‑issuance second‑party opinions (SPOs) based on the promised impact reporting.
Climate transition claims
This thematic note (the ‘fourth note’) draws on observed market practices across funds, bonds and benchmarks. ESMA explains that these claims are often forward-looking and subject to uncertainty because outcomes may depend on future actions, assumptions and external factors. According to ESMA, however, such uncertainty does not diminish the need for such claims to be clear, fair and not misleading. The note therefore encourages firms making transition claims to clearly communicate:
what the transition ambition is;
how it is expected to be implemented (i.e. implementation strategy and action plan), including material assumptions and dependencies; and
how progress will be assessed and communicated, including any material data limitations.
Points of interest
ESMA notes that appropriate governance arrangements and remunerations schemes also underpin the credibility of transition claims as they ensure the delivery of the transition ambition is effectively overseen and embedded in decision-making processes.
ESMA encourages firms to communicate in a timely manner where progress falls below expectations or where targets are no longer considered achievable and to include the reasons and any corrective actions. This message is reasserted by ESMA in its statement on Common Enforcement Priorities for 2026 Corporate Reporting, published the following day, where it reminds issuers that if they have missed (or abandoned) a target with the current reporting year as the target year or considers that it will not be able to meet a target by the target year, it should disclose that fact.
In addition, the statement reminds issuers of the importance of clear disclosure on methodological changes compared to previous years since such changes could affect assessment of the progress towards the target. ESMA continues to say that it has, in some cases, observed a mismatch between the reporting of impacts, risks and opportunities (IROs) disclosed under the CSRD, and risks included elsewhere in the annual financial report and reminds issuers to enhance consistency across these two areas.
ESMA also warns firms against reporting selectively on positive developments while omitting material delays or challenges. These are practical applications of the ESMA principle that omissions and cherry-picking should be avoided.
Click here to view the full list of Do's and Don'ts
Type of claim
Do’s
Don’ts
Clarity of the transition ambition
Explain the ambition and intended transition outcome (e.g. reducing portfolio emissions, real economy decarbonisation, exposure to transitioning investments).
Describe the science-based scenarios, decarbonisation pathways, or other frameworks underpinning the ambition, in alignment with the Paris Agreement and EU climate objectives.
Explain the scope of the transition ambition, including, where relevant, the asset classes or emission scopes covered.
Explain how achievement of the ambition will be assessed and measured, based on decision useful, quantitative metrics, including their meaning, scope and any material data limitations.
Where targets are disclosed, specify the metrics, time horizon, relevant base year, base value and intermediate milestones.
Explain key assumptions and challenges that may affect the achievability of the ambition.
Don’t rely solely on broad aspirational statements, without explaining how achievement of the transition ambition will be assessed.
Don’t use metrics or alignment claims without sufficiently explaining their meaning, scope and limitations.
Don’t present portfolio decarbonisation targets in a way to suggest that portfolio decarbonisation equates to real-economy emissions reductions.
Don’t refer to external validation or independent opinions without clearly explaining their scope, what has been assessed and any material limitations.
Adequacy of the implementation strategy and action plan
Explain how the underlying holdings, constituents or financed activities support the stated transition ambition.
Where a benchmark is replicated or used as a reference in the transition strategy,explain its role and how it relates to the fund’s transition objective.
Clarify how any exposure to fossil fuel-related activities or other high-emitting sectors is consistent with the transition ambition.
Explain the extent to which investee companies' transition plans are underpinned by validated or science-based climate transition targets.
Describe any exclusions and positive screening criteria used to identify investments in line with the transition ambition.
For debt instruments, explain how the financed activities or projects support the issuer's ambition and achievement of transition objectives.
Don’t present transition ambitions without explaining the key elements of the implementation strategy.
Don’t rely on ESG ratings, scores or proprietary assessments without explaining the underlying methodology and relevance to the transition ambition.
Don’t refer to stewardship or engagement without explaining how they support the transition ambition, including any escalation mechanisms.
Transparency on progress achieved
Regularly report progress against previously communicated ambition, targets and milestones, in an easily identifiable manner.
Explain any material data limitations, estimation techniques or assumptions affecting interpretation of the reported progress.
Report on the progress of exposures in high emitting sectors, including fossil fuel-related activities.
Communicate, in a timely manner, where progress falls below expectations or targets are no longer considered achievable, including the reasons and any corrective actions.
Where the ambition is to support real-economy decarbonisation, report progress using metrics relevant to that objective (e.g. attribution analysis9 or the number of portfolio companies reducing their emissions).
Ensure that hyperlinks to supporting information are active, up to date and easily accessible.
Don’t communicate progress solely through broad narratives or scattered references across various documents.
Don’t report selectively on positive developments while omitting material delays or challenges.
Don’t present progress using metrics and methodologies inconsistent with those originally communicated.
Don’t make material changes to the methodologies or indicators used to report progress without clearly explaining the reasons and their implications.
Don’t present progress on individual actions, investments or activities as overall progress towards the stated ambition.
Do not refer to external assurance or verification without explaining its scope, the information assessed and any material limitations.
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