The "Handbook for Funder Collaborations" is a compilation of research conducted by JFN that provides a comprehensive review of existing studies, articles, and in-depth interviews with 27 stakeholders in Israel. While the Handbook focuses on collaborations based in Israel, most examples include Israeli and American funders working together, and the lessons are relevant to any cross-cultural partnership. Funder collaborations are effective tools that multiply efforts, and build unique models to achieve common goals in order to maximize impact. The process of collaborating creates opportunities to move beyond the work of a single actor by bridging gaps, and bringing together different players who share the same vision, goals, and strategy. The Handbook aims to help funders navigate the benefits and the challenges, along with the pros and cons, of starting or joining a pooled funding collaboration. In doing so, it offers tools and tips to structure the collaboration for maximum success and impact.