Is Greenwashing Illegal? EU, UK, and US Laws Explained

Greenwashing is illegal in the EU, UK, and US. It is not a grey area or a reputational risk. It is a legal exposure with specific financial penalties: up to 4% of annual global turnover in the EU, up to 10% in the UK, and per-violation fines under the US FTC Green Guides, a framework active since 1992 and continues to be enforced.

This matters because “greenwashing” is not just a term for obvious fraud. Regulators have ruled against companies for claims as simple as “Be environmentally friendly” (TIER Electric Scooters, UK 2022), “Sustainable Style” (Superdry, UK 2024), and “Fly Responsibly” (KLM, Netherlands 2023). The bar for what constitutes a non-compliant environmental claim is lower than most marketing teams realise. ^[1]

This guide covers what greenwashing means legally, which laws apply in the EU, UK, and US, what the consequences are, and what companies need to do to ensure their environmental claims are compliant.

Is Greenwashing Illegal in the EU?

Yes. The EU’s ECGT Directive (2024/825) makes specific types of environmental claims illegal. Member states must apply measures from 27 September 2026. The directive adds to Annex I of the Unfair Commercial Practices Directive, meaning the banned practices are prohibited in all circumstances. No case-by-case assessment required.

What is banned under EU law:

• Generic environmental claims such as “eco-friendly”, “green”, “sustainable”, “responsible”, “conscious”, “climate friendly”, and “nature’s friend” where the trader cannot demonstrate recognised excellent environmental performance
• Claiming a product has a neutral, reduced, or positive environmental impact based on emissions offsetting: “carbon neutral”, “climate neutral”, “net zero”, “climate compensated”
• Displaying a sustainability label not based on a recognised certification scheme or established by public authorities
• Making an environmental claim about the whole product or company when it only concerns one aspect of it

Penalties: Member states must set maximum penalties of at least 4% of annual turnover in the relevant member state, or EUR 2 million, whichever is higher. Additional penalties include confiscation of revenues, exclusion from public procurement, and mandatory campaign withdrawal.

Is Greenwashing Illegal in the UK?

Yes, and enforcement is already active. The UK Consumer Protection from Unfair Trading Regulations 2008 and the CMA’s Green Claims Code provide the legal basis. Since April 2025, the CMA has direct fining powers under the Digital Markets, Competition and Consumers Act: up to 10% of global annual turnover, with no court order required.

The ASA (Advertising Standards Authority) uses AI to proactively monitor advertising for non-compliant environmental claims. Companies do not need to be reported. The ASA finds them.

Enforcement examples already on the record:

• HSBC (2022): Ads promoting green financing while omitting the bank’s continued financing of high-emission industries. Ruled misleading by omission.
• TIER Electric Scooters (2022): “Be environmentally friendly”: could not prove zero lifecycle environmental damage. Ad withdrawn.
• Superdry (2024): A single Google ad saying “Sustainable Style”, pulled after ASA complaint.
• Lacoste Kids (2024): Used 78% certified materials and had lifecycle analyses, yet still lost on the ad claim “Sustainable Clothing.”
• KLM (Netherlands, 2023): “Fly Responsibly” carbon offset campaign ruled misleading.

The pattern is consistent: vague absolute claims are being challenged and withdrawn even where companies have genuine sustainability programmes. The claims themselves are the liability, not the underlying activity.

Is Greenwashing Illegal in the US? FTC Green Guides and Environmental Marketing Law

Yes, under the FTC Green Guides (16 CFR Part 260), which have been in force since 1992 and were last updated in 2012 with a further review underway. The FTC regulates green marketing and can take action against companies making deceptive environmental claims under Section 5 of the FTC Act. Penalties per violation can reach $53,088.

The Green Guides specifically address:

• General environmental benefit claims: broad claims like “eco-friendly” or “environmentally safe” are problematic unless qualified
• Carbon offset claims: must be based on specific, verifiable reductions and properly disclosed
• Recyclable, biodegradable, and compostable claims: must reflect how the product actually performs in real disposal conditions
• Certifications and endorsements: must be from independent, legitimate bodies

US enforcement cases include Kohl’s and Walmart (fined $2.5M and $3M respectively in 2022 for falsely marketing rayon products as bamboo), and the ongoing scrutiny of carbon offset claims by state attorneys general and the FTC.

What Are the Consequences of Greenwashing?

Financial penalties are the most direct consequence: 4% of global turnover under EU law, 10% under UK law, per-violation fines in the US. But the practical consequences extend further:

• Mandatory campaign withdrawal: Ads, product descriptions, and marketing materials must be removed at the company’s expense.
• Public naming: Regulators publish decisions. An enforcement action is publicly searchable and permanently associated with your brand.
• Exclusion from public procurement: EU member states can exclude companies found in breach from government contracts.
• Reputational damage: A greenwashing finding receives press coverage. Lacoste, HSBC, KLM, and Superdry all featured in news articles after their ASA or regulatory rulings.
• Civil litigation: In some jurisdictions, competitors and consumers can bring civil claims based on misleading environmental claims.

What Counts as Greenwashing Under the Law?

The legal definition is broader than most companies expect. Greenwashing is not limited to outright false claims. It includes:

• Misleading by omission: Advertising a product’s green credentials while omitting significant negative environmental impacts. HSBC’s case was exactly this.
• Vague absolute claims: “Eco-friendly”, “sustainable”, “green”, “conscious” without specific substantiation.
• Selective emphasis: Highlighting one environmental positive while ignoring the overall environmental picture.
• Unverified carbon offset claims: Claiming products are “carbon neutral” or “net zero” based on offset purchases that have not been independently verified.
• Fake certifications: Displaying certification marks that are not from legitimate, independent bodies.

How to Avoid Greenwashing: Making Environmental Claims Compliant

Three practical steps apply to any business making environmental claims:

Audit existing claims before regulators do. Every environmental claim across your website, advertising, product packaging, and social media is a potential exposure. GreenClaim.ai scans websites and marketing copy for green claims risk under EU, UK, and US regulations simultaneously, identifying non-compliant language and suggesting specific, defensible alternatives. The EU ECGT applies from September 2026, but UK enforcement is active now and FTC scrutiny is ongoing.

Replace vague claims with specific ones. “Eco-friendly” is non-compliant. “Plants verified trees in Tanzania, with field-measured CO2 data of 0.025 tonnes per tree per year” is a specific, substantiated claim. The more specific the claim, the more defensible it is. ForestNation’s Working Trees field study methodology is an example of the kind of specific, published evidence that underpins defensible environmental claims.

Build the evidence before making the claim. Under UK law, companies must hold supporting evidence before making a claim, not after a challenge is raised. The same principle applies under EU and US law. If you cannot cite the evidence for a claim before you publish it, do not publish it.

Frequently Asked Questions

Is greenwashing illegal in the USA?

Yes. The US FTC Green Guides (16 CFR Part 260) prohibit deceptive environmental marketing claims under Section 5 of the FTC Act. Penalties per violation can reach $53,088. The FTC has taken action against companies for false bamboo, recycling, and carbon offset claims. State attorneys general have also pursued greenwashing cases independently of the FTC.

Is there a law against greenwashing?

Yes, in all three major markets. The EU ECGT Directive (2024/825) bans specific generic environmental claims from September 2026. The UK CMA Green Claims Code has been active since 2021, with direct fining powers added in April 2025. The US FTC Green Guides have been in force since 1992. All three treat vague environmental claims such as “eco-friendly” and “sustainable” as potentially non-compliant.

What is the punishment for greenwashing?

In the EU: up to 4% of annual global turnover or EUR 2 million. In the UK: up to 10% of global annual turnover with daily penalties for continued non-compliance. In the US: up to $53,088 per violation under FTC enforcement. Additional consequences include mandatory campaign withdrawal, public naming in regulatory decisions, and exclusion from public procurement in the EU.

What are examples of greenwashing that have been prosecuted?

HSBC (UK, 2022): misleading by omission on green financing. KLM (Netherlands, 2023): “Fly Responsibly” carbon offset campaign ruled misleading. TIER Electric Scooters (UK, 2022): “Be environmentally friendly” without lifecycle evidence. Kohl’s and Walmart (US, 2022): fined $2.5M and $3M for false bamboo claims. Lacoste Kids (UK, 2024): “Sustainable Clothing” ad withdrawn despite extensive sustainability data.