Here is a question more corporate sustainability teams are asking: the credits airlines have to buy for CORSIA are held to an unusually strict standard — can we buy those same credits for our own voluntary claims? The short answer is yes, and there is a growing, sensible reason to.
What "CORSIA-Eligible" Means
CORSIA-eligible credits are not a project type; they are a quality bar. To qualify, a credit must come from a crediting programme that ICAO has approved, meet the scheme's eligibility criteria, fall within the right vintage window, and — for the first phase — carry a corresponding adjustment so the reduction is not counted twice. In effect, it is a credit that has already cleared several of the integrity checks that the broader voluntary market leaves to the buyer.
Yes, Companies Can Buy Them
There is no rule confining CORSIA-eligible credits to airlines. A company can buy and retire them for a voluntary claim just as it would any other credit. What it is really buying is the eligibility filter: a unit that has passed an approval process and, ideally, carries a corresponding adjustment. For a corporate buyer, that is a way to sidestep much of the quality risk that plagues cheap voluntary credits.
Why a Corporate Would Choose Them
Three reasons a serious buyer pays up for CORSIA-grade units:
| Reason | What it delivers |
|---|---|
| Integrity signal | Cleared a strict, recognised standard |
| No double counting | Corresponding adjustment in place |
| Audit resilience | Easier to defend to auditors and customers |
For a company whose climate claims will be scrutinised — by regulators, customers or investors — buying credits that overlap heavily with the ICVCM Core Carbon Principles is a hedge against reputational risk.
The Premium — and When It Is Worth It
CORSIA-eligible, corresponding-adjusted credits trade at a clear premium, precisely because the filters remove most of the supply — see why CORSIA-grade credits cost more. Whether that premium is worth it depends on your purpose. For a low-stakes gesture, a well-rated ordinary voluntary credit may suffice. For a claim you will have to defend, the corresponding adjustment and eligibility pedigree are usually worth paying for.
How to Buy Them
The mechanics are the same as any carbon-credit purchase: source through brokers, exchanges or developers, verify the programme approval and corresponding-adjustment status against the published source, and retire the units in your name with an evidence pack. The extra step is simply confirming CORSIA eligibility before you contract, since not every credit that claims it actually holds it.
Frequently Asked Questions
Can non-airlines buy CORSIA-eligible carbon credits? Yes — there is no restriction limiting them to airlines; companies can buy and retire them for voluntary claims.
Why would a company buy CORSIA-grade credits? They have cleared a strict eligibility and (for the first phase) corresponding-adjustment standard, giving a stronger integrity signal and better audit resilience.
Are CORSIA-eligible credits more expensive? Yes — the eligibility filters remove most supply, so corresponding-adjusted, CORSIA-eligible units trade at a premium.
What is a corresponding adjustment? An accounting step where the host country deducts the traded reduction from its own total, preventing the same tonne being counted twice.
How do I check a credit is really CORSIA-eligible? Verify the crediting programme's approval and the unit's corresponding-adjustment status against the published source before purchasing — do not rely on the seller's claim.
Buying carbon credits or measuring travel and freight emissions? DSTechnoverse works on the data and integrity side of carbon — footprint measurement, project screening, registry and eligibility verification, and defensible reporting. See our CORSIA carbon credit services and data analytics. We are based in Indore, Madhya Pradesh and work across India and internationally.
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