Since 2020, in response to the climate emergency, a growing number of NGOs have committed themselves to reducing their greenhouse gas emissions. Like other organisations, the NGO that commissioned this report committed itself to reduce its greenhouse gas emissions by 50% by 2030, with 50% being an absolute value by comparison with 2019. Emissions are to be accounted for as fully as possible. Is this target fair, however? The aim of this report is to analyse this NGO’s decarbonisation targets, as well as the monitoring and review process, highlighting some of the pitfalls of carbon accounting and reviewing some of the foundations of environmental ethics and climate justice. Finally, the report puts forward proposals for a fair decarbonisation target.