High-integrity carbon credits: how to choose (and what to avoid)
Not every credit is the same. A practical list of the ICVCM integrity criteria, third-party ratings, and a step-by-step checklist to apply before signing any purchase.
Why this became critical in 2026
Investigative journalism (The Guardian/Die Zeit/SourceMaterial in 2023, Bloomberg Green in 2024) and the European regulatory squeeze turned carbon offsetting into a minefield for the legal department. A bad credit used in public communication today means:
- CSRD (EU): an unfounded climate claim becomes "missing or misleading information" in the ESRS report, exposed to penalty from the local regulator.
- Green Claims Directive (EU, in force 2026): bans generic claims such as "carbon neutral" without verified evidence.
- CONAR (Brazil): has already ruled against retailers that communicated "carbon offsetting" without an adequate documentary trail.
- Shareholder litigation: investors (European funds in particular) are bringing actions against companies over climate greenwashing.
The practical consequence: the compliance team has to understand carbon credits. And the commercial team has to stop promising "neutrality" without calling legal first.
The ICVCM Core Carbon Principles
In 2023 the Integrity Council for the Voluntary Carbon Market published ten principles that separate a serious credit from a doubtful one. The essential ones:
- Additionality: the project only exists because of the credit. Without it, the reduction would not happen.
- Permanence: the reduction lasts. In forests it requires guarantees against fire, future deforestation and reversal.
- Robust quantification: a conservative baseline, known factors, uncertainty documented through statistical sampling.
- No double counting: it cannot be used both by the host country in its NDC and by the buying company.
- Verifiable co-benefits: social and biodiversity impact documented by a third party.
- Social safeguards (FPIC): free, prior and informed consent from local communities.
- Transparent governance: public registry, traceable retirement, declared conflicts of interest.
- Continuous monitoring: verification at the start is not enough; annual or biennial measurement is required.
Credit types by integrity level
| Type | Permanence | Additionality | Reputational risk | Price range (USD/tCO₂e) |
|---|---|---|---|---|
| REDD+ Verra+CCB rated ≥ A | Medium-high | High if the forest was at risk | Low | 8-18 |
| ARR (Brazilian reforestation) | High | High | Low | 25-45 |
| REDD+ ART/TREES jurisdictional | High | High | Low | 12-22 |
| Renewable energy (legacy CDM) | N/A | Low today | High, discontinued | 1-3 |
| Cookstoves | Variable | Variable | Medium | 3-8 |
| DAC (direct capture) | Very high | High | Low, but expensive | 400-600 |
| Biochar | High | High | Low | 100-180 |
| BECCS | High | Variable | Medium | 150-300 |
Checklist before buying
- Is the project in a public registry (Verra, Gold Standard, ART/TREES, Plan Vivo)?
- Does it have an independent third-party rating (Sylvera, BeZero, Calyx) of A or better?
- Was the baseline revised after 2023?
- Does it carry co-benefit certification (CCB, SD VISta, Gold Standard for Global Goals)?
- Does the developer publish annual monitoring reports?
- Will the retirement sit in a public registry with a traceable ID visible to third parties?
- Is there a buffer pool of at least 15-20%, credits held back as insurance against reversal?
- Is there a contract clause against double counting (the host country's NDC)?
- Is land due diligence complete (CAR, CCIR, overlap with indigenous land)?
- Is the PDD (Project Description Document) publicly accessible?
The conservative choice
For most Brazilian companies with a structured inventory (CSRD mandatory for EU operations, IFRS S2 voluntary after CVM 244, or an SBTi target):
- 70-80% of the volume in high-quality REDD+ Verra+CCB (available volume, reasonable cost, social co-benefits).
- 15-25% in removals (Brazilian ARR, biochar) to future-proof against SBTi V2.
- 0-5% in technological removal (DAC, BECCS) if there is budget and an innovation narrative.
Avoid unreassessed cookstoves and any legacy CDM. Prefer Brazilian projects: it cuts regulatory risk (Law 15,042/2024 on the regulated market), brings the ESG narrative closer to local impact, and simplifies due diligence.
How Mangue helps
We offer REDD+ Verra+CCB straight from Carbonext, our investor and the largest developer in the Brazilian Amazon. For portfolios that need removals, we curate on demand, including audited Brazilian ARR and biochar from certified suppliers.
Everything comes with a complete evidence pack: rating, PDD, retirement contracts, certificates in a public registry, and a narrative ready to use in a CSRD/IFRS S2 report without adjustment.
- With no public registry (Verra, Gold Standard, ART/TREES, Plan Vivo) and no traceable retirement ID, it is not a credit, it is a spreadsheet.
- A baseline revised after 2023, and methodologies VM0048/VMD0055, comfortably supersede the old ones for REDD+ projects.
- Certified co-benefits (CCB, SD VISta, GS for Global Goals) cut reputational risk and raise perceived value.
- Document your due diligence: rating, contract, retirement record, public narrative. IFRS S2 and CSRD auditors will ask for it.
- Fair average price today (April 2026): quality REDD+ Verra+CCB USD 8-18; Brazilian ARR USD 25-45; biochar USD 100-180; DAC USD 400-600.
Perguntas frequentes
Can I buy cheap credits (USD 2-5/t) without risk?+
Not for public use. A credit in that range is almost always an unrated cookstove project or legacy CDM. For internal BVCM (with no claim attached) it can still make accounting sense; for any external communication it is greenwashing waiting to be reported.
What is the difference between avoidance and removal?+
Avoidance (REDD+, renewable energy, efficiency) stops a future emission from happening. Removal (ARR, biochar, DAC, BECCS) takes CO₂ that is already in the atmosphere out of it. SBTi V2 accepts only removals to neutralize the net-zero residual. ISO 14068-1 accepts both for 'carbon neutral', but with internal reduction first in the hierarchy.
What is ICVCM and who takes part?+
The Integrity Council for the Voluntary Carbon Market. An independent body launched in 2021 with multi-stakeholder governance (academia, NGOs, industry, indigenous peoples). In 2023 it published the 10 Core Carbon Principles, and since 2024 it has audited programmes (Verra, Gold Standard, ART) to certify them as CCP-Eligible.
Does a third-party rating replace the developer's audit?+
No. The developer's audit (DNV, Bureau Veritas, AENOR) verifies that the project follows the chosen methodology. A third-party rating (Sylvera/BeZero/Calyx) assesses, on top of that audit, whether the methodology itself is robust enough. The two are complementary; for a serious credit you want both.
How do I know the project has not been double counted?+
Check whether the host country applied a corresponding adjustment in its NDC (Article 6 market), or whether the credit is marked 'voluntary use only' in the registry. For voluntary market outside Article 6, require a contractual statement from the developer that there is no simultaneous transfer to any NDC.
- ICVCM
- Integrity Council for the Voluntary Carbon Market. The independent body that published the Core Carbon Principles in 2023.
- CCP
- Core Carbon Principles. ICVCM's 10 minimum criteria for a high-integrity credit.
- Additionality
- The principle that the project only exists (and the reduction only happens) because of credit funding. Without additionality, the credit represents no real climate benefit.
- Permanence
- The guarantee that the reduction lasts. In forests it requires insurance against fire and future deforestation, plus buffer pool mechanisms.
- Sylvera / BeZero / Calyx
- The three main independent rating agencies for carbon credits; the equivalent of credit rating agencies in financial markets.
- ARR
- Afforestation, Reforestation and Revegetation. Projects that plant trees to remove CO₂ from the atmosphere (not to be confused with REDD+, which avoids deforestation).
- DAC
- Direct Air Capture. Technology that captures CO₂ straight from the atmosphere. Expensive today (USD 400-600/t) but with very high permanence.
- BVCM
- Beyond Value Chain Mitigation. Climate investment beyond the company's own emissions, with no neutralization claim. The SBTi V2 standard.
- Core Carbon Principles · ICVCM
- Verified Carbon Standard · Verra
Frameworks mencionados neste artigo
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