Banks and other financial institutions have a central role to play in supporting the net zero transition of the business sector and its millions of SMEs. They are working to integrate climate considerations in various aspects of their operations, including strategy, management and financial products. This calls for the development of new internal capacities and access to SME sustainability data and assessments which are currently difficult to obtain. This policy paper presents the findings of a 2023 survey of public development banks and private financial institutions, conducted by the by the OECD Platform on Financing SMEs for Sustainability. It provides insights on financial institutions' current approaches and plans for the integration of climate considerations in their SME operations. It also provides information on the offer of finance and non-financial support for SMEs’ net zero investments and on related SME climate-related data requirements.