A white paper produced by the Net-Zero Insurance Alliance. This paper outlines the evolving thinking and practices via the work of the Net-Zero Insurance Alliance (NZIA), a group of over 20 leading insurers representing about 12% of world premium volume, to address the net-zero challenge in the context of insurance underwriting portfolios. The NZIA is a UN-convened and member-led alliance that supports its members as they work towards decarbonising their underwriting portfolios by individually setting science-based intermediate targets and reporting on their progress annually and publicly. The NZIA also advocates for and engages in governmental policies for a science-based and socially just transition of economic sectors to net zero. Speakers: Butch Bacani, Programme Lead, UNEP's Principles for Sustainable Insurance John Scott, Head of Sustainability Risk, Zurich Insurance Group Lucy McCracken, Senior Manager, Group Public Policy & Sustainability, Aviva Sheri Wilbanks, Head of P&C Climate and Sustainability, Group Risk Management AXA