This document summarizes the provisional findings of the OECD's 2020 survey on green budgeting practices across member countries. The key findings include: 1) Green budgeting is more widely used than expected, with over half of responding countries having some form of green budgeting in place. 2) Strategic frameworks and accountability measures are common, while tools and methods vary more between countries. 3) Lack of methodologies and resources hold some countries back from further developing green budgeting. 4) Measuring the impact of green budgeting is a challenge for most countries. 5) Responding countries expect green perspectives to feature in upcoming economic recovery packages from COVID-19.