November 2026 · climate · free local tool
Ask Three Questions Before Repeating a Carbon Offset Claim
An offset purchase is not the same thing as an immediate measured emissions reduction.
Check three facts
Your next step
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Data as of 2026-11-01; review due 2026-11-20.
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Show the working
The same three evidence rules power the example, your result, and the self-test.
Engine self-test
Checking five golden cases…
Limits and safe use
A receipt proves a payment, not when a reduction occurred or whether it was sold twice.
This tool offers general information. It does not replace a doctor, lawyer, accountant, or emergency service.
Yes records your assertion, not independent verification. The checklist prioritizes missing evidence in the order shown; it does not calculate risk or certify an outcome. Nothing is submitted to any agency, provider, seller, or employer.
Source notes and currentness
FTC guidance calls for reliable evidence, accounting that prevents double selling, and disclosure when reductions will not occur for at least two years.
- Federal Trade Commission — Environmental Claims: Summary of the Green Guides
The Green Guides distinguish specific environmental claims, their qualifications, and the evidence needed to support them. This is U.S. marketing guidance, not a global certification scheme.
Publication/effective date: Undated summary; retrieved 2026-11-01. Checked 2026-11-01.
- UNFCCC — The Road to Antalya
COP31 is scheduled in Antalya, Türkiye, from November 9 to 20, 2026. This is a conference schedule, not an adopted outcome or a product endorsement.
Publication/effective date: 2026-11-09 to 2026-11-20 (scheduled event). Checked 2026-11-01.