Green claims checklist: how to avoid accidental greenwashing
Green claims are everywhere, and so are weak ones. This checklist helps businesses make environmental claims that are clearer, more specific and easier to defend.
Green claims are everywhere, and so are weak ones. This checklist helps businesses make environmental claims that are clearer, more specific and easier to defend.
Information only
This guide is for general information only. It is not legal advice, regulatory advice, accounting advice, financial advice or a substitute for reviewing current Competition and Markets Authority guidance, advertising rules, sector rules or professional advice before making public environmental claims.
What is a green claim?
A green claim is any statement that suggests a product, service, company or activity has an environmental benefit. It might say a product is recyclable, low carbon, sustainable, climate friendly, carbon neutral, plastic free or better for the planet.
The problem is that broad environmental language can easily mislead. A claim can be technically true in one narrow sense but still give readers the wrong overall impression.
Simple test
If an ordinary customer would understand the claim more strongly than the evidence supports, the wording probably needs tightening.
Why green claims are risky
Green claims sit between marketing, product design, compliance and customer trust. A weak claim can create more than reputational embarrassment. It can trigger customer complaints, regulator attention, investor questions, procurement problems and internal confusion about what the business has actually achieved.
The risk usually comes from one of four places: the wording is too broad, the evidence is too weak, the scope is unclear, or the claim hides an important limitation. A good review process tests all four before the claim goes live.
| Question | Why it matters | Useful evidence |
|---|---|---|
| What exactly is being claimed? | Broad claims can imply more than the business means. | Final wording, product scope and sign-off notes. |
| What proves it? | A claim should be supported before publication. | Supplier documents, calculations, certifications, test reports. |
| What is excluded? | Customers may assume the whole product or company is covered. | Boundary statement and limitations. |
| Could it be misunderstood? | Technically true claims can still mislead. | Plain-English review by someone outside the project. |
1. Be specific
Specific claims are easier to support than vague claims. “Made with 80 percent recycled aluminium” is clearer than “eco-friendly.” “Plastic-free packaging” is clearer than “better for the planet.”
Avoid broad terms unless you can explain exactly what they mean. Words like sustainable, green, clean and planet-friendly are often too vague on their own.
2. Define the scope
Say what the claim applies to. Is it the product, the packaging, the delivery, the manufacturing process, the company as a whole, or only one part of the supply chain?
For example, “our packaging is recyclable” is different from “our product is recyclable.” “Our office uses renewable electricity” is different from “our company is powered by renewable energy.”
3. Check the full impression
Claims are not judged only by the exact words. Images, labels, colour choices, icons, page placement and omitted context can all change the impression a customer receives. A product page covered in environmental language may imply a broader sustainability benefit even if one sentence is technically narrow.
Before publication, read the claim as a customer would. Ask what they are likely to believe after seeing the whole page, advert, packaging or proposal. If the impression is stronger than the evidence, reduce the claim or add context.
4. Keep evidence close to the claim
Every green claim should be backed by evidence before it is published. That evidence might include supplier documentation, lifecycle analysis, emissions calculations, certification documents, testing reports or procurement records.
Do not wait until someone challenges the claim to assemble the proof. The evidence should exist first.
5. Avoid misleading comparisons
Comparative claims need a clear baseline. If a product says “50 percent lower carbon,” readers need to know lower than what. Lower than the previous version? Lower than a market average? Lower than a specific competitor?
A good comparison should explain:
- What is being compared
- The time period used
- The method of calculation
- Whether the comparison covers the whole lifecycle or only one stage
6. Be careful with carbon neutral claims
Carbon neutral claims are especially sensitive because they often rely on offsets. If a company uses credits, it should explain what emissions were measured, what reductions were made, what credits were bought, which standard issued them and whether the credits were retired.
A claim that depends mainly on offsetting should not imply that the business has eliminated its own emissions.
For offset-supported claims, keep the carbon footprint boundary, emissions calculation, reduction actions, credit project details, registry retirement certificate and exact claim wording together. Our guide to carbon offsetting for UK businesses explains what evidence to keep, while the climate claims hierarchy helps decide whether the evidence supports contribution, offsetting, carbon neutral, net zero or stronger wording.
The same test applies to events as well as products. The World Cup climate impact guide shows how footprint boundaries, travel emissions, offsets and post-event evidence shape whether a sustainability claim is credible.
7. Do not hide trade-offs
Some environmental improvements come with trade-offs. A product may reduce plastic but increase weight. A material may be recyclable in theory but rarely recycled in practice. A lower-carbon option may have other environmental impacts.
Credible communication does not need to list every limitation in an advert, but it should avoid creating a false impression that a product is impact-free.
8. Review claims before publishing
Businesses should have a simple review process for environmental claims. Marketing, product, sustainability and legal or compliance teams may all need to be involved depending on the claim.
For small businesses, the process can be simple:
- Write the claim in plain language
- Identify exactly what it applies to
- Attach the evidence
- Check whether a reasonable customer could misunderstand it
- Record who approved it and when
Claim review workflow
A simple workflow can prevent most problems. Draft the claim, identify the evidence, check the scope, review the whole impression, approve the wording and store the evidence. The owner should also set a review date. Claims based on suppliers, packaging, emissions factors, certificates or technology can become outdated quickly.
- Draft: write the claim in plain language and avoid vague words where possible.
- Evidence: attach the documents, calculations or certificates that support it.
- Scope: define product, service, packaging, delivery, company or site coverage.
- Review: check whether an ordinary customer could understand it too broadly.
- Approve: record the owner, date and final wording.
- Store: keep the evidence in an ESG data room or controlled folder.
Green claim examples
| Weak claim | Better claim | Why it is better |
|---|---|---|
| Eco-friendly packaging | Packaging made from 80 percent recycled cardboard | Specific and measurable |
| Carbon neutral product | We measure product emissions and retire verified credits for the residual footprint | Explains the mechanism |
| Sustainable materials | Organic cotton certified by [named certification] | Names the evidence |
| Greener delivery | Local deliveries within 10 miles are made by electric van | Defines the scope |
The bottom line
A credible green claim is specific, evidenced and proportionate. It says what has improved without pretending the whole product or business is perfect. That may sound less dramatic, but it is much more likely to earn trust.
Green claims FAQ
Can a claim be true but still misleading?
Yes. A claim can be technically true in a narrow sense but misleading if it gives customers a stronger impression than the evidence supports. Scope and context matter.
Are carbon neutral claims allowed?
They are high-risk unless they are tightly evidenced. A business should explain the emissions boundary, reduction actions, credit type, registry retirement and whether the claim applies to a product, service or whole company.
How often should claims be reviewed?
Review claims whenever evidence, suppliers, packaging, product design, emissions factors or regulation changes. At minimum, review recurring environmental claims annually.
Collect evidence before writing the claim
The safest green claims are written from evidence, not around it. Start with what has actually changed: the product, process, material, energy source, packaging, emissions boundary or certification. Then decide what wording the evidence can support. If the evidence is narrow, the claim should be narrow too.
This sequence helps prevent accidental overclaiming. Marketing teams often want short, simple language, but sustainability evidence is usually specific. A claim such as lower carbon may need a comparison basis, calculation method, period, lifecycle boundary and explanation of what is excluded. A claim such as recycled may need the percentage, material type and whether it refers to packaging or product content. If the business cannot produce the evidence quickly, the claim is probably not ready. Good claims are not only persuasive. They are retrievable, auditable and proportionate.