Introducing the High-Integrity Carbon Markets Toolkit
Integrity can unlock the real value of carbon markets
November 18, 2025
Indigenous Peoples, local communities, women and other rights holders must actively participate in the design, implementation and governance of carbon market activities.
Around the world, developing economies are taking action to meet their climate goals. Yet the financing gap remains vast. Trillions of dollars are needed each year to achieve the Paris Agreement targets. Public funding alone cannot close this gap.
High-integrity carbon markets can be part of the solution. When built on transparency, accountability, and respect for rights, people and nature, they can attract private investments and channel them where they’re needed most– helping countries accelerate climate action.
What does integrity mean in the context of carbon markets?
First, a quick definition of what we mean when we use the term “high integrity.” Without clear rules and clarity on what counts as a credible result, carbon markets can lead to double counting of emission reductions, misuse of terms like “carbon-neutral,” or activities that harm people and violate rights. That’s why high integrity matters; it is what prevents greenwashing, weak claims and projects that shift risks onto communities instead of supporting them.
Integrity determines whether a carbon credit truly represents a real, measurable, additional, permanent and uniquely accounted tonne of CO₂ reduced or removed from the atmosphere. But carbon integrity is only half of the story. Social and environmental integrity is just as vital, because it ensures that carbon market activities respect the rights of Indigenous Peoples and local communities, advance gender equality, apply robust social and environmental safeguards and contribute to the Sustainable Development Goals (SDGs).
Only when these two dimensions work together can carbon markets build trust, turning climate action into an engine for inclusive sustainable development.
The main question is how then we can ensure social integrity. This requires collaboration across the entire value chain:
- Standard-setting bodies, including carbon crediting programmes and the Integrity Council for the Voluntary Carbon Market (ICVCM) must set clear rules and robust safeguards consistent with international human rights law.
- Host county governments must create clear policies and safeguards systems for Article 6, which provides a framework for countries to cooperate on climate action, to achieve their Nationally Determined Contributions (NDCs) and voluntary carbon markets to ensure that all projects align with national priorities and international obligations.
- Project developers must apply rigorous procedures to identify, manage and monitor potential risks—including those affecting Indigenous Peoples’ rights.
- Indigenous Peoples, local communities, women and other rights holders must actively participate in the design, implementation and governance of carbon markets, ensuring their rights, knowledge and priorities are fully respected.
- Validation and verification bodies must conduct not only technical assessments but also social audits, verifying compliance with safeguards and human rights obligations.
- Carbon credit rating agencies should reinforce integrity by integrating safeguards and SDGs into their rating systems, offering a more complete evaluation of credit quality and project performance.
- Buyers and investors should drive change by demanding high-integrity credits and paying a fair price for that.
Together, these actors form an “integrity ecosystem” that keeps carbon markets credible and people-centred, minimizing risk, preventing harm and delivering finance that strengthens both climate ambition and sustainable development.
Clean energy carbon projects help rural communities adapt by ensuring reliable power for essential services during climate stresses.
The High-Integrity Carbon Markets Toolkit
To help countries and partners strengthen this ecosystem, UNDP developed the High-Integrity Carbon Markets Toolkit, a practical guide for governments, project developers, buyers, Indigenous Peoples and local communities to design, implement and scale activities that meet the highest integrity standards.
Drawing on decades of experience and guided by UNDP’s Social and Environmental Standards (SES), it aims to:
- Advance a common understanding of what high integrity requires, building shared definitions, practices and capacities, starting with social integrity.
- Boost market confidence and unlock investment through trusted high-quality carbon credits that receive price premiums.
- Provide hands-on guidance for integrating, measuring, monitoring, verifying and validating social and environmental safeguards and SDG impacts.
The first module of the Toolkit is now out. Titled Carbon Markets 101, it explains how compliance and voluntary carbon markets operate, the roles of key actors across the value chain, and what defines high integrity. As we publish the new modules in the coming months, the Toolkit will move from foundational literacy into the areas where countries say they need the most practical help to make integrity real in day-to-day decisions, translating high-level principles into concrete institutional arrangements. The Toolkit will also expand guidance for rights-holders, particularly Indigenous Peoples, local communities and women’s groups, so that they have the information, negotiation leverage and institutional support to assert their rights and shape market design decisions from the beginning, not after deals are struck.
Our end-goal is not simply raising awareness. It is shifting power, improving the quality of decisions, and equipping countries and communities to participate on their own terms, with confidence and clarity, in a market that is evolving very quickly. Ultimately, integrity unlocks trust, and trust is what enables capital to flow at scale, on fairer terms, into mitigation actions that strengthen and accelerate NDC implementation and deliver real benefits.
The Toolkit builds on real work already underway. In Ghana and Peru, UNDP is helping operationalize the world’s first Article 6.2 cooperative approaches with Switzerland, demonstrating what high-integrity international transfers can look like. And in Cambodia, UNDP is helping the government assess how both voluntary and compliance market pathways could mobilize investment in priority sectors such as energy and land use, aligned with the country’s NDCs. We’re proud that the experiences from these efforts have fed directly into the Toolkit, ensuring that guidance is grounded in lessons from implementation, not theory.
If you want to learn more, explore the Toolkit here.
To learn more or explore collaboration opportunities, follow the Technical Insights Series, or contact carbon.markets@undp.org.