This ecbi Policy Brief by Benito Müller looks at whether the progress and momentum of the LCA finance negotiations in Tianjin could be harnessed to bring about a successful outcome at Cancún, and what that would be. It envisages a decision to design an agreed voluntary reporting framework for fast start funding. A successful outcome for longer-term finance, it is suggested, would be a package of decisions to operationalise the new Global Climate Fund and the new Standing Committee on Finance, together with a decision to agree on a medium term revenue schedule for the new fund for 2012-2020.