In this episode of This Week in Carbon, we explore the evolving voluntary carbon market (VCM) with insights from experts in carbon credit ratings, Donna Lee and Duncan van Bergen. The VCM is shifting from heuristic-based to data-driven decisions, with ratings agencies enhancing transparency and integrity. Despite challenges like baseline accuracy, embodied emissions, and a focus on in-setting, the market is maturing through better methodologies, digital tools, and education. By 2030, the VCM should be a robust, digitised climate tool, prioritising impact over perfection.We discuss:• The role of transparent, data-driven ratings in assessing carbon credit quality and impact• The shift from heuristic-based to evidence-based decision-making in the VCM• The growing price premium for high-quality credits and challenges with baseline accuracy in nature-based projects• The importance of balancing corporate emissions reduction with carbon credit purchases• The potential of digitised infrastructure and market maturity to drive climate impact by 2030