On 28 October 2019, the OECD launched new guidance on Due Diligence for Responsible Corporate Lending and Securities Underwriting. The guidance is based and elaborates on the OECD Guidelines for Multinational Enterprises, representing an important step forward in encouraging responsible conduct by financial sector actors and outlining when and how they are accountable for adverse social and environmental impacts associated with their financial activities. To explain some of the key highlights of the guidance to civil society, OECD Watch and BankTrack have prepared this analysis and briefing on the strongest elements of the guidance to use in advocacy.