Carbon Credit Scams
Fraudulent investment schemes that sell worthless, non-existent, or unregistered carbon credits as a high-return alternative investment.
Last reviewed: 1 June 2026
What this scam is
Carbon credit scams are investment frauds that use the language of environmental finance to sell worthless, unregistered, or entirely fictional carbon credits to retail investors. Carbon credits are real financial instruments used by businesses to offset their greenhouse gas emissions, and a legitimate regulated market for them exists. Scammers exploit the combination of genuine market reality and widespread public unfamiliarity with how that market operates.
A genuine carbon credit represents a verified reduction of one tonne of CO2-equivalent emissions, certified under a recognised standard and tradeable within regulated compliance markets (such as the EU ETS) or voluntary markets. Fraudulent carbon credits are either entirely fabricated, issued under fake or unrecognised schemes, or represent interests in real credits that are grossly overpriced and have no secondary market for retail investors.
Carbon credit scams typically present the investment as both financially lucrative and ethically positive — the investor earns a return while doing something good for the environment. This dual appeal is deliberately constructed and can lower the scrutiny typically applied to financial decisions. The green and ethical framing is a feature of the pitch, not evidence of genuine impact or legitimacy.
Regulators in multiple countries have issued specific warnings about carbon credit investment fraud. The FCA in the UK placed carbon credits on its warning list of common high-risk investment types.
How it works
Contact typically arrives via cold call, a social media advert promoting green investment, or an email presenting carbon credits as the next high-growth asset class. The pitch is polished and references real market context — climate legislation, corporate net-zero commitments, rising demand — to make the investment sound timely and credible.
You are offered a quantity of carbon credits at a set price, with a projected return based on expected price appreciation. Documentation is provided: certificates, registry numbers, scheme names. In some cases you are told the credits are already held or pending allocation. The paperwork looks professionally produced.
When you try to sell the credits or realise your investment, you discover the secondary market is inaccessible to retail investors, the registry numbers are fake or belong to a non-recognised scheme, or the credits have no buyers at any price. The company may demand further fees to facilitate a sale. It eventually becomes uncontactable.
In some cases, the investment is structured through a company that claims to be reforesting land or funding renewable energy projects. The credits produced by these projects either do not exist, are not certified under any recognised standard, or have already been sold multiple times.
Why this scam works
Carbon credit scams succeed for several reasons that compound one another. The market is real but unfamiliar — most people have heard of carbon credits without knowing how the market works, which creates an information gap that scammers fill with selective and misleading information.
The ethical framing is powerful. Investing in something that is positioned as fighting climate change adds a non-financial motivation that can bypass the usual commercial scepticism. The investor feels they are doing well while doing good.
The genuine scarcity and growth narrative — climate policy increasing demand, supply constrained by verified project availability — has real-world parallels that make the projected returns feel plausible. That the retail investment opportunity being presented has no legitimate path to the same market goes unexplained.
A typical pattern
A person receives a call from a company presenting carbon credits as a timely investment backed by climate legislation and growing corporate demand. Professional documents and a detailed prospectus are emailed. A quantity of credits is purchased and certificates received. Months later the person contacts the company to sell and is told a liquidation fee is required. After paying, another fee is required. The company eventually stops responding and the certificates prove worthless.
Common red flags
- Unsolicited approach promoting carbon credits as a high-return investment
- Registry numbers that cannot be verified in any publicly accessible database
- Credits sold under a scheme name that appears nowhere in established carbon market literature
- Projected returns significantly above what the current voluntary carbon market supports
- Firm absent from financial regulator's register for investment activities
- Urgency framing: supply is limited, legislation is about to drive prices up
- Difficulty identifying any genuine secondary market for the credits being sold
- Fees demanded to facilitate sale or liquidation of your credit holding
- Ethical or environmental framing used as a primary sales argument rather than a secondary feature
Sanitized example messages
Illustrative, sanitized examples. Personal details are replaced with placeholders such as [phone number] and [fake link].
Governments worldwide are mandating carbon neutrality. Carbon credits are the fastest-growing asset class — we're offering a limited allocation at [price] with projected returns of [percentage]% annually.
Your [amount] carbon credit investment is confirmed. Certificates will arrive within 14 days. You've made a financially smart and environmentally responsible decision.
Due to new climate legislation passing, demand for our credits is surging. We have a final tranche available at the current price — after this week the price increases.
To liquidate your carbon credit position, a [amount] fee is required to cover transfer and certification costs. Once paid, we can complete the sale within 30 days.
Common variations
- Retail carbon credit investment sold via cold call with fake registry numbers
- Carbon offset project claiming to produce credits that do not materialise
- Voluntary carbon market credits sold to retail investors at inflated prices with no exit route
- Cryptocurrency token backed by claimed but unverified carbon credits
- SIPP investment directing pension funds into overpriced carbon credit portfolios
- Second fraud: liquidation scam targeting prior carbon credit fraud victims
How to verify before you act
Ask whether the credits are registered on a recognised registry — the Gold Standard, Verra VCS, or a compliance market registry. Verify the registration number independently by searching the relevant registry's public database. A registry number that does not appear in a recognised public database is not genuine.
Ask whether the credits are in a compliance market (which requires large institutional access) or a voluntary market. Retail investment opportunities in compliance markets are not typically available via cold call. Voluntary market credits may have a secondary market, but its liquidity is very limited for retail investors.
Verify the firm on your financial regulator's register. In the UK, carbon credit investment schemes typically require FCA authorisation. Search the firm name and the scheme name on your regulator's warning list.
Search for the firm alongside 'scam', 'warning', and 'review'. The FCA and other regulators have issued specific warnings about carbon credit investment fraud.
Payment methods used
- Bank transfer
- Cheque
Who is usually targeted
- Environmentally motivated investors
- People seeking ethical investment alternatives
- Investors who have engaged with ESG or sustainable finance topics
- Older investors approached via cold call
What to do immediately
- Stop all payments and do not pay any liquidation, transfer, or certification fees
- Attempt to verify any registry numbers independently using recognised registry databases
- Check the firm on your national financial regulator's register and warning list
- Report to your national fraud service with all documentation
- Contact your bank about any recent payments
- Preserve all certificates, prospectuses, and communications
How to prevent it
- Verify any carbon credit scheme by searching its registry numbers in a recognised public database
- Check any firm offering carbon credit investments on your financial regulator's register
- Be especially sceptical of green or ethical framing — it does not substitute for verified credentials
- Understand that compliance market carbon credits are not typically accessible to retail investors
- Never invest in response to an unsolicited call or message, regardless of the asset class
- Take independent regulated advice before investing in any alternative or environmental asset
- Search the firm on your regulator's warning list before making any payment
Evidence to preserve
- All certificates, registry confirmation numbers, and scheme documentation
- Purchase invoices and bank transfer records
- All communications including initial pitch materials
- The firm's website URL and any regulatory claims
- Names and roles of all individuals you dealt with
Where to report it
- Action Fraud (UK) — UK national fraud & cybercrime reporting centre
- FTC ReportFraud (US) — US Federal Trade Commission fraud reports
- FBI IC3 (US) — US Internet Crime Complaint Center
- Scamwatch (Australia) — Australian competition & consumer reporting
- Your bank's fraud line — Use the number on the back of your card or in your banking app — never a number the caller gives you
- FCA ScamSmart / Warning List (UK) — FCA has specifically flagged carbon credit investment fraud
Always verify reporting routes and emergency contacts on the official government or agency website for your country.
Frequently asked questions
Are carbon credits a legitimate investment?
Genuine carbon credits exist within regulated compliance and voluntary markets, but these markets are primarily institutional. Retail investment opportunities offered via cold call or online ad are overwhelmingly fraudulent. Legitimate access generally requires significant institutional involvement.
How do I verify a carbon credit registry number?
Recognised registries such as the Gold Standard Registry (registry.goldstandard.org) and the Verra Registry (registry.verra.org) have publicly searchable databases. If a registry number cannot be found on a publicly accessible, recognised registry, it is not genuine.
What is the difference between compliance and voluntary carbon markets?
Compliance markets (like the EU ETS) are mandatory for large industrial emitters and are primarily institutional. Voluntary markets allow companies and individuals to offset emissions voluntarily, but retail investment in voluntary market credits carries very limited liquidity and is frequently exploited by fraudsters.
Why does the ethical framing make me more likely to be deceived?
The combination of financial return and positive environmental impact can lower the scrutiny applied to due diligence. Wanting an investment to be legitimate because it represents a good cause is a natural response — scammers exploit this directly. The ethical framing is a sales tactic, not evidence of legitimacy.
I have carbon credit certificates. Are they worth anything?
Verify the registry numbers as described above. If the numbers do not appear in a recognised registry, the certificates have no value. Report to your fraud service and regulator with all documentation.
Is it possible to invest legitimately in environmental assets?
Yes — regulated investment products with genuine exposure to environmental assets exist, including listed funds. These should be purchased through regulated, authorised investment platforms found independently, not through cold call or unsolicited contact.
What if the firm says it is involved in a reforestation project?
Ask for independently verifiable evidence of the project — land title, third-party certification under a recognised standard, and an audited credit issuance record. Claims about environmental projects without independently verifiable documentation are common in carbon credit fraud.