What is the ICROA Code of Best Practice?

The ICROA Code of Best Practice is a framework setting minimum requirements for voluntary carbon market service providers. Developed by the International Carbon Reduction and Offsetting Alliance (ICROA) and first established in 2008, the Code covers how organizations must handle carbon credit transactions, emissions footprinting, reduction advisory services, and governance. In December 2025, ICROA announced it will wind down operations by late 2026, making this an important moment to understand what the Code achieved and why it mattered.

How the ICROA Code of Best Practice Works

The Code is structured across four sections: transacting and retiring carbon credits, GHG emissions and removals inventories (footprinting), GHG emission reductions advisory services, and governance. Together, these sections define what rigorous, science-aligned carbon management looks like for organizations providing voluntary carbon services.

ICROA Approval, the accreditation status earned by meeting the Code's standards, is obtained annually through an independent third-party compliance audit. This annual audit cycle ensures approved organizations remain current with evolving market standards rather than simply compliant at a single point in time.

Critically, ICROA Approved organizations are only permitted to transact credits from ICROA Endorsed Crediting Programmes. This creates a closed-loop quality signal: if a service provider holds ICROA Approval, buyers know their credits originate from programmes that have passed independent scrutiny against defined additionality, MRV, and environmental integrity criteria.

Approval vs. Endorsement: Two Distinct Programmes

The ICROA framework operates on two levels. The Approval Programme certifies service providers: consultancies, brokers, and offset providers that help companies measure and compensate for their emissions. The Endorsement Programme certifies the crediting programmes themselves, including Verra, Gold Standard, Plan Vivo, and others.

Endorsed crediting programmes must demonstrate that their standards meet ICROA's criteria for quality, transparency, and environmental integrity. Programmes may receive conditional endorsement initially, progressing to full endorsement once operational volume thresholds are met.

This two-tier structure means ICROA Approval signals something beyond credit-level quality. It signals that the entire service delivery chain, from programme selection to credit retirement, meets an independently audited standard.

ICROA's Legacy and What Comes Next

On December 5, 2025, ICROA announced it would wind down by late 2026. The rationale is straightforward: the market it helped build has matured. The ICVCM's Core Carbon Principles and VCMI's Claims Code of Practice now provide the global integrity architecture that ICROA originally set out to establish.

ICROA Managing Director Andrea Abrahams stated that the ICROA community "helped pave the way to the new integrity frameworks the market relies on today." From 2008 onward, ICROA gave buyers a credible signal in a market that had few independent benchmarks. Its endorsed programmes list served as a practical quality filter, particularly for organizations new to carbon purchasing.

Verification standards that buyers now take for granted across major registries owe something to the precedent ICROA set by requiring annual third-party audits as a condition of membership.

Key Takeaway

The ICROA Code of Best Practice defined responsible carbon market participation for over 15 years. Its requirements for audited approval, science-aligned footprinting, and exclusive use of endorsed credits established an early integrity standard that directly influenced the frameworks now taking its place. As ICROA winds down through 2026, the integrity work continues under ICVCM and VCMI, on a foundation ICROA helped build.