How to buy carbon credits.
A carbon credit is one verified tonne of CO₂ avoided or removed — the unit beneath every offset. Whether you’re buying for personal action or a corporate net-zero plan, this guide covers what a credit is, how to judge quality, where to buy, what drives price, and the due-diligence steps that separate a real credit from a weak one.
What is a carbon credit?
A carbon credit is a tradable certificate representing one tonne of CO₂e avoided or removed by a verified project. A registry — Verra, Gold Standard, Puro.earth and others — issues each credit with a unique serial number and tracks who owns it, so a tonne can only ever be claimed once. Buying credits is the procurement step; a credit only becomes a carbon offset once it’s permanently retired against specific emissions. Learn how project types map to the UN Sustainable Development Goals.
How to buy carbon credits in seven steps.
A repeatable process for buying credits you can stand behind — whether one tonne or ten thousand.
Decide why you’re buying — voluntary climate action, an ESG or net-zero claim, or regulatory compliance. Your purpose sets the project types, quality bar and volume you need.
Pick avoidance credits (cheaper, immediate) and/or durable removals (for the residual emissions in a net-zero plan), across categories like forestry, renewables, biochar or engineered removal.
Confirm the credit is certified to a recognised standard (Verra VCS, Gold Standard, Puro.earth, ACR…) and issued on a public registry with a unique serial number.
Look past the registry label: screen against the ICVCM Core Carbon Principles and ratings agencies such as BeZero and Sylvera for like-for-like quality.
Favour recent vintages, genuine additionality (the project needed the carbon finance to happen), low leakage, and a permanence horizon that matches your claim.
Purchase the credits and ensure they’re permanently retired in your or your company’s name on the registry — a bought-but-unretired credit can still be resold and double-counted.
Record the registry serial numbers and retirement certificate. That public, immutable record is your audit trail for ESG and net-zero disclosures.
How to judge a carbon credit.
The registry label is the start, not the end. Six factors decide whether a credit represents a real tonne — see our screening criteria.
The methodology a project is certified against — Verra’s VCS, Gold Standard, Puro.earth and others set the rules for measurement and verification.
The public database that issues serialised credits and records retirements, so each tonne can only be used once.
Agencies like BeZero and Sylvera score real-world quality beyond the label; the ICVCM CCP is a cross-registry integrity floor.
The emission reduction wouldn’t have happened without the carbon finance — the single most important quality test.
How long the carbon stays out of the atmosphere — minutes for some avoidance, centuries for biochar and geological storage.
The year the reduction occurred. Recent vintages reflect current climate need; very old credits are weaker.
Four ways to buy carbon credits.
Each route trades off price, minimum size and how much due diligence falls on you.
Best for very large, multi-year commitments. You negotiate volume and price but carry the full due-diligence and contracting burden yourself, usually with high minimums.
Venues like Xpansiv (CBL) offer live market pricing. Built for traders and bulk standardised contracts — not for one-off purchases or certificates.
Platforms such as Carbonmark and Patch list a broad selection and expose developer-facing APIs. Flexible, but you still vet and retire credits yourself.
A curator like BuyCarbonOffsets.org screens projects, buys at wholesale, retires on your behalf, and issues a verifiable certificate — no minimum. Best fit for most individuals and businesses.
How carbon credits are priced.
Carbon credits aren’t a single commodity — prices span from a few dollars to over a thousand per tonne. The biggest driver is the mechanism: avoidance is cheap and plentiful; durable removal is scarce and expensive because permanence is hard to guarantee.
- ● Mechanism — avoidance vs durable removal
- ● Vintage — the year the reduction occurred
- ● Co-benefits & ratings — SDGs, biodiversity, BeZero/Sylvera scores
- ● Volume — larger purchases negotiate better unit prices
- ● Standard & registry — issuance and verification rigour
Voluntary vs compliance credits.
Individuals and businesses buy by choice — for climate responsibility, brand and ESG goals. Flexible project choice and no legal obligation. This is where most BuyCarbonOffsets.org credits sit.
Regulated entities buy or surrender credits to meet a legal cap (e.g. emissions trading schemes, CORSIA for aviation). Eligibility and accounting rules are stricter and scheme-specific.
Credit vs offset — what’s the difference?
A carbon credit is the asset you procure: one verified tonne, serial-numbered on a registry, ownable and tradable. It becomes a carbon offset the moment it’s retired against specific emissions and can never be used again. Buying credits is procurement; retiring one is the offset.
Common questions.
How do I buy carbon credits?
Define your goal and budget, choose your project types, then verify each credit’s standard, registry, independent rating, vintage and additionality before you buy. Purchase the credits and make sure they’re permanently retired in your name, and keep the registry serial numbers as proof. The simplest route for most buyers is a curated reseller that screens and retires credits for you and issues a certificate.
What is a carbon credit?
A carbon credit is a tradable certificate representing one tonne of CO₂e that has been avoided or removed from the atmosphere by a verified project. It is issued and given a unique serial number by a carbon registry (such as Verra or Gold Standard) and can only be claimed once it is permanently retired.
How much does a carbon credit cost?
Prices range widely by quality and type — from a few dollars per tonne for some avoidance credits to $100–$1,000+ per tonne for durable engineered removals. Price is driven by project type, vintage, co-benefits and ratings, volume, and the registry. At retail, our credits run from about $12 to $350 per tonne.
Where can I buy verified carbon credits?
You can buy directly from developers, on spot exchanges like Xpansiv (CBL), through marketplaces and APIs such as Carbonmark and Patch, or through a reseller/aggregator that curates, retires and certifies on your behalf. Developers and exchanges suit very large volumes; resellers suit most individuals and businesses who want vetted credits and a certificate without minimums.
What is the difference between a carbon credit and a carbon offset?
A carbon credit is the unit you buy — one verified tonne, issued by a registry. It becomes a carbon offset only once it is retired against your own emissions. In short: you buy a credit; retiring it is the offset.
Can a business buy carbon credits in bulk?
Yes. Businesses can buy at volume with bulk pricing, invoices and consolidated reporting. For a science-based net-zero strategy, buy avoidance credits for near-term action and durable removals for residual emissions, and keep every registry serial for your ESG audit trail.
Buy vetted credits, retired for you.
Skip the due diligence and minimums — every credit in our shop is screened, registry-traceable, and permanently retired in your name with a certificate.