This F20 Sustainable Finance Working Group paper shows how philanthropies can shift from traditional charity to participatory, long-term, and systemic grantmaking. It presents strategies such as multi-year unrestricted funding, community-led funds, capacity building, and equitable access to resources, while advocating for reforms in global financial systems and stronger inclusion of Global South voices. These recommendations are directly relevant to grantmaking, as they address how funders can remove barriers, share decision-making power, and align funding practices with long-term systemic change.