Well-managed carbon credits are a strategic instrument — badly managed ones are an accounting and reputational time bomb. This article is about achieving the former.
Once an organization has cut its own emissions as far as practical, carbon credits offset the remainder. But holding multiple lots across registries and currencies on a spreadsheet is a real accounting and credibility risk.
The life of a credit
Purchase (project, vintage, registry recorded) → holding (value tracked) → retirement (permanently used, never reusable) → certificate issued. Retirement must be atomic — the same lot must never retire twice — and should map to a specific target or reporting period.
Credit value under IAS 21
Credits bought in foreign currency must be valued per IAS 21: the exchange rate differs between purchase date and reporting date, and listed companies must present these values correctly in their financial statements.
Beyond offsetting
Modern guidance such as VCMI favours insetting — investing in emission reductions inside your own value chain (Scope 3) rather than buying credits outside it — plus BVCM (Beyond Value Chain Mitigation) for additional contributions.
“Offset credibility is about sequence: reduce what you can first, then offset what remains”
In GCarbon
The platform provides a full credit ledger: atomic retirement with certificates, registry sync, multi-currency valuation per IAS 21, credit-to-goal mapping, and Scope 3 insetting support — every entry fully traceable.
Choosing credit projects on principle
Credit quality varies enormously by project type. Avoidance credits (such as renewable energy) are cheaper but face growing additionality scrutiny, while removal credits (reforestation, direct air capture) cost more but are where international standards are heading. Organizations should hold a deliberate mix and disclose the types clearly in their reports.
Beware double claiming and stale vintages
Nothing destroys credibility faster than the same credit claimed twice, or suspiciously cheap credits from very old vintages. A sound registry shows retirement status publicly and verifiably — and organizations should record every lot's serial numbers in their own system with supporting evidence.
GCarbon Team
Carbon accounting specialists



