The Commonwealth Expert Group on Climate Finance was asked to examine how the Commonwealth can best assist its developing country members, particularly Small Island Developing States (SIDS), Least Developed Countries (LDCs) and other particularly vulnerable states, to improve their access to currently available climate financing, and institutionalise easier access to climate financing in the future. We have not repeated the wealth of analysis available elsewhere. Rather, we have set out some key and immediate practical steps that Heads of Government can take to deliver a step-change in the effectiveness of climate financing for all developing countries (including those outside the Commonwealth), at the same time as increasing the global commitment to climate action.