How are comparative and future-dated claims regulated?

Two claim types that point away from the product

Most environmental claims describe the package in hand. Two families describe something else: the comparative claim describes a relationship — better than a rival, better than before — and the future-dated claim describes an intention — recyclable by 2030, net zero by 2040. Both families have flourished precisely because they escape the present tense: a comparison can be favourable while both compared things are poor, and a promise can be inspiring while current performance is unremarkable. Claims law has responded to each with a distinct discipline, and the period since 2024 has hardened both — comparative claims through information duties and fairness tests, future claims through a substantiation architecture so demanding that, in one Dutch courtroom and one EU directive, the aspirational register of corporate sustainability marketing has effectively been placed on terms.

This article sets out the two regimes — their standards machinery, their statutory forms, and the enforcement record that now defines their edges.

Comparative claims: the standards foundation

The oldest discipline is standards-based. ISO 14021, governing self-declared claims, permits comparative environmental assertions only within tight procedural rails: a comparison "shall only be made... using a published standard or recognized test method" and "against comparable products serving similar functions, supplied by the same or another producer, currently or recently in the same marketplace" (ISO, 1999, cl. 6.3.1). The standard then regulates the arithmetic itself: comparisons based on percentages "should be expressed as absolute differences", while those based on measured values "should be expressed as relative improvements" (ISO, 1999, cl. 6.3.3), and claims "should be worded to be clear that it is a claim of absolute difference and not a claim of relative difference" (ISO, 1999, cl. 6.3.4).

The arithmetic rules deserve translation, because they target a specific and durable deception. "Now 50% more recycled content" can describe a move from 10 to 15 per cent — a relative improvement dressed as a large number. The standard's demand that percentage claims state absolute differences (from 10 to 15 points) and that measured-value claims state their relative frame is a thirty-year-old anticipation of exactly the baseline games the modern enforcement record documents. So is the comparator discipline: a package "better than" a predecessor the producer quietly worsened, or a rival that no longer exists, fails clause 6.3.1's currency requirement.

National claims law generalises the same principles with less arithmetic specificity. The FTC's Green Guides handle comparatives among their general principles: comparative claims "should be clear to avoid consumer confusion about the comparison" and "[m]arketers should have substantiation for the comparison" (16 CFR § 260.3(d)). The CMA's Green Claims Code makes fair comparison a headline principle — "Comparisons must be fair and meaningful" (CMA, 2021) — and the Netherlands' ACM devotes one of its five rules of thumb to the same duty: "Make fair comparisons with other products or competitors" (ACM, 2023).

Comparative claims: the EU's information duty

The Empowering Consumers Directive adds a disclosure layer — but a narrower one than commentary often suggests, and its scope deserves precision. The new material-information duty the directive inserts into the unfair-practices framework attaches to comparison services, not to traders' own comparative claims: "Where a trader provides a service which compares products and provides the consumer with information on environmental or social characteristics", then "information about the method of comparison, the products which are the object of comparison and the suppliers of those products" is material information whose omission misleads (Directive (EU) 2024/825, inserting Article 7(7) into Directive 2005/29/EC). A retailer's sustainability-ranking tool owes the disclosure; an on-pack "50% less plastic" claim does not — it remains governed by the general misleadingness rules and the standards discipline above. The comparative-claim substantiation regime proper — specified requirements including equivalent data and methods for the compared products — was the blocked Green Claims Directive's contribution, suspended with the proposal (European Commission, 2023).

For packaging, the comparative family has one further boundary worth marking: the self-comparative claim ("50% less plastic", "our lightest bottle ever") is the format's dominant on-pack use, and it inherits every duty the rival-comparative carries — currency of the baseline, disclosed frame, substantiation of both terms. The enforcement significance is practical: self-comparatives are checkable from the producer's own records, making them the easiest claims in this theme to falsify in an audit — and the easiest to inflate in a redesign cycle, since every packaging change generates a flattering denominator somewhere in the portfolio's history.

Future-dated claims: the new severity

The future-dated claim's regulatory arc is steeper, because its deceptive mechanism is subtler: a promise cannot be false at utterance in the way a description can. The regimes have therefore converged on policing the machinery behind the promise rather than the promise's eventual truth.

The EU rule is the clearest statement. The Empowering Consumers Directive adds to the misleading-actions provision a specific entry: making "an environmental claim related to future environmental performance without clear, objective, publicly available and verifiable commitments set out in a detailed and realistic implementation plan that includes measurable and time-bound targets and other relevant elements necessary to support its implementation, such as allocation of resources, and that is regularly verified by an independent third party expert, whose findings are made available to consumers" (Directive (EU) 2024/825, inserting point (d) into art. 6(2) of Directive 2005/29/EC).

The provision's placement matters as much as its content, and is widely misreported: future-performance claims are not on the Annex I blacklist. They sit in Article 6(2) — the misleading-actions test — meaning they are assessed case by case, unfair where they mislead the average consumer, rather than banned outright (Directive (EU) 2024/825; see the corrections discussion below). What the provision does is codify the conditions under which a future claim can avoid being misleading: implementation plan, measurable and time-bound targets, resourced delivery, independent third-party verification with public findings. A "recyclable by 2030" flash on a package, unaccompanied by that architecture, is now presumptively a misleading action in the EU — but by evaluation, not per se.

The ACM's guidance had anticipated the same structure: "Describe your future sustainability ambitions in concrete and verifiable terms" (ACM, 2023). And the offsetting-based variant of the future claim — carbon-neutral-by-purchase — was severed from the family entirely: claiming "based on the offsetting of greenhouse gas emissions, that a product has a neutral, reduced or positive impact on the environment in terms of greenhouse gas emissions" is blacklisted, in all circumstances (Directive (EU) 2024/825, Annex I point 4c). The promise financed by offsets is banned; the promise backed by a verified plan is conditioned.

The enforcement record: KLM as the hinge

The doctrine's live test came in Fossielvrij NL v. KLM, decided by the Amsterdam District Court on 20 March 2024 — the first Dutch greenwashing class action. The court held fifteen of nineteen challenged statements misleading, across exactly this article's two families: offsetting products suggesting consumers could "completely neutralise" flight emissions; sustainable-aviation-fuel claims that "painted an overly optimistic picture" where the measures "only marginally reduce the negative environmental aspects"; and vague future-oriented sustainability messaging, misleading for its "vague and general statements regarding environmental benefits" without detail of how the benefits would be achieved (Osborne Clarke, 2024). Two features give the judgment its reach. The court granted no injunction — KLM had discontinued the statements — making the ruling almost purely declaratory: a court-authored specification of the future-claim discipline, delivered without a remedy dispute to narrow it. And its reasoning was promptly generalised: the CPC network's aviation action concluded in November 2025 with twenty-one airlines committing to stop claiming that payments "neutralise, offset, or directly reduce" emissions and to substantiate future-oriented environmental language (European Commission, 2025) — the judgment's logic, administratively scaled to a sector.

France supplies the statutory extreme for the offsetting variant: since January 2023, advertising a product as "neutre en carbone" (or equivalent) is conditioned on published lifecycle greenhouse-gas reporting, a ten-year quantified reduction trajectory, and disclosed offsetting details (Légifrance, 2022) — carbon neutrality not banned but bureaucratised, with the claim's cost set high enough that French practice has largely abandoned it.

Offsetting's fall: the claim family that crossed the line

Within the future-claims family, one sub-species has travelled the full regulatory arc — from marketing staple to per se prohibition — inside five years, and its trajectory maps the family's whole direction.

Carbon-neutral-by-offset claims began the 2020s as the aspiration claim's most successful commercial form: a present-tense virtue ("this product is carbon neutral") financed by a future-and-elsewhere mechanism (credits retired against projected reductions). Their structural weakness was the family's in concentrated form — the claim's truth depended entirely on machinery the consumer could not inspect and the trader did not control. The regimes' responses escalated in sequence. France bureaucratised the claim from January 2023: lawful only with published lifecycle reporting, a decade-long reduction trajectory, and disclosed offsetting terms (Légifrance, 2022). The Amsterdam court adjudicated it in March 2024: offset products suggesting consumers could "completely neutralise" their emissions were among the KLM statements held misleading (Osborne Clarke, 2024). California converted it into a standing disclosure obligation from 2024, requiring entities making carbon-neutral and net-zero claims in the state to publish annual substantiation, on pain of civil penalties (the US article). And the EU ended the argument for products: claiming "based on the offsetting of greenhouse gas emissions, that a product has a neutral, reduced or positive impact on the environment in terms of greenhouse gas emissions" is unfair in all circumstances (Directive (EU) 2024/825, Annex I point 4c) — with the CPC's airline commitments generalising the position across a sector by November 2025 (European Commission, 2025).

The arc's instructive feature is why offsetting fell while the planned-transition claim survived on conditions. Both are future-dependent; the difference is the dependency's direction. A verified transition plan points the future obligation at the claimant — targets, resources, independent monitoring of the trader's own conduct. An offset claim points it at third parties elsewhere — project developers, registries, counterfactual baselines — attenuating verification past what any consumer-facing representation can carry. The regimes, without coordinating, all drew the same line: promises about oneself are conditionable; promises discharged by purchased externalities are not. For packaging, where "carbon neutral" flashes had begun migrating onto packs in the early 2020s, the line's practical meaning is blunt — the claim is gone from lawful EU artwork, bureaucratised in France, disclosure-priced in California, and litigation-marked everywhere the KLM reasoning travels.

The doctrinal settlement

Assembled, the two families now share a settled logic that can be stated as three propositions.

First, both claim types are derivative: their truth depends on something outside the product's present state — a comparator's properties, a plan's execution — and the regimes respond by regulating the derivation: the comparison's method, the promise's machinery.

Second, both carry asymmetric verification burdens: the trader controls the baseline choice and the plan's content, the consumer can verify neither, and the rules therefore mandate disclosure (the comparison's basis) or third-party structures (the plan's verification) to re-balance what the claim form itself unbalances.

Third, the aspirational escape has closed on both sides of the Atlantic — by different instruments. In Europe, through Article 6(2)(d)'s conditions and the KLM reasoning; in the United States, through the appellate revival of Earth Island Institute's suit against Coca-Cola, holding that "[e]ven aspirational statements can be actionable... because they can convey to reasonable consumers that a speaker is taking (or intends to take) steps that at least have the potential of fulfilling those aspirations" (Kelley Drye, 2024). Puffery — the doctrine that once sheltered both the vague present and the glowing future — now shelters neither, a convergence this theme's generic-claims article documents for the present tense and this article records for the future.

For packaging specifically, the settlement prices two familiar formats. The on-pack roadmap claim — "100% recyclable by 2030" — requires, in the EU, the full plan-and-verification architecture behind a phrase the pack has no room to qualify; the practical effect is to push future claims off the package and into report-linked channels, one more current in the migration of contested content to the data layer that this library's third theme tracks. And the on-pack comparative — "less plastic", "better bottle" — survives everywhere, but on terms that make its substantiation file, not its wording, the compliance object. Both formats remain lawful. Neither remains casual — and the distance between those two sentences is, compactly, what this theme's enforcement decade changed for the claims that point away from the product: they may still point, but the pointing is now itself a regulated act.

References

ACM (Autoriteit Consument & Markt) (2023) Guidelines regarding sustainability claims, 13 June. Available at: Open source (Accessed: 18 August 2026).

CMA (Competition and Markets Authority) (2021) Environmental claims on goods and services (Green Claims Code guidance), 20 September. Available at: Open source (Accessed: 18 August 2026).

Directive (EU) 2024/825 of the European Parliament and of the Council of 28 February 2024, OJ L, 2024/825, 6.3.2024. Available at: Open source (Accessed: 18 August 2026).

European Commission (2023) Proposal for a Green Claims Directive, COM(2023) 166 final. Available at: Open source (Accessed: 18 August 2026).

European Commission (2025) Twenty-one European airlines agree to modify their practices regarding environmental claims, IP/25/2608, 6 November. Available at: Open source (Accessed: 18 August 2026).

ISO (International Organization for Standardization) (1999) ISO 14021:1999 Environmental labels and declarations — Self-declared environmental claims. Geneva: ISO. Text as adopted in IS/ISO 14021:1999, available at: Open source (Accessed: 18 August 2026).

Kelley Drye (2024) DC Court of Appeals revives greenwashing suit over aspirational claims. Available at: Open source (Accessed: 18 August 2026).

Légifrance (2022) Décret n° 2022-539 du 13 avril 2022 relatif à la compensation carbone et aux allégations de neutralité carbone dans la publicité. Available at: Open source (Accessed: 18 August 2026).

Osborne Clarke (2024) District Court Amsterdam declares green claims KLM misleading and unlawful. Available at: Open source (Accessed: 18 August 2026).

16 CFR § 260.3 (FTC Green Guides, general principles). Available at: Open source (Accessed: 18 August 2026).

Note on sources and verification

ISO 14021 clause quotations (6.3.1, 6.3.3, 6.3.4) are verbatim from the 1999 text as publicly accessible through the archived national adoption cited, with the standing caveat that the 2026 edition may renumber or revise them. The Article 6(2)(d) future-performance provision is quoted verbatim from Directive (EU) 2024/825, and its non-blacklist placement — a point commentary frequently gets wrong — is verified against the directive's text. The Article 7(7) comparison-services provision is quoted verbatim from the directive as retrieved from EUR-Lex; a note is warranted that this duty attaches to services comparing products, not to traders' own comparative claims — an earlier draft of this article, and some commentary, overstated its reach. The FTC comparative-claims quotation is from § 260.3(d) — not § 260.4, a miscitation found in some secondary sources. KLM judgment characterisations and quotations are from the legal analysis cited; the judgment itself (in Dutch) was not retrieved. The French decree's requirements are summarised from the Légifrance text; its article-level provisions were not quoted verbatim. The claim that French practice has largely abandoned carbon-neutral advertising is an observation from sector coverage and is not quantified.

Last verified: 18 August 2026.