The protection of tropical forests is a hot topic, particularly in light of the pressing threat of global climate change. The 2014 UN Climate Summit saw a range of national and subnational governments, along with numerous business and civil society organizations, endorse the New York Declaration on Forests, which set a timeline for cutting natural forest loss in half (by 2020) and ending it completely (by 2030). A major goal of the declaration is to agree at the upcoming UN Climate Change Conference in Paris to reduce deforestation and forest degradation as part of a post-2020 global climate agreement. And financial contributions are now stacking up, with more than USD 9.6 billion pledged by 22 countries to the UN’s Green Climate Fund. Securing a global climate agreement that includes tropical deforestation would no doubt be a historic achievement. But once world leaders return from Paris, the proof of the pudding will lie in national implementation. They may well wish to consider what can be learned from recent schemes for Reducing Emissions from Deforestation and Forest Degradation (known as REDD+), to date largely funded by the Norwegian government through bilateral arrangements with major deforesters like Indonesia and Brazil, but also channeled through multilateral agencies. It turns out that even when donors have pledged substantial amounts of money, spending that money effectively can be challenging. A major part of that challenge relates to the difficult political-economy of forest sector reform in developing countries, where corruption in its various guises can be a core feature. Indeed, despite being described as a potential game-changer for addressing tropical deforestation, REDD+ financing also risks increasing corruption and related problems like land grabbing.