The G20 has endorsed a roadmap towards better, bigger and more effective multilateral development banks (MDBs) (G20 (2024)). This roadmap, supported by the heads of 10 MDBs, aims to reform these institutions to address regional and global challenges more effectively (World Bank (2024a)). The roadmap, among other recommendations, provides suggestions to enhance MDBs' financing capacity. Independently, but aligned with the roadmap goals, the BIS Innovation Hub, World Bank and Swiss National Bank are exploring how to make the funding processes of MDBs fit for the 21st century. […]