- Governments have committed to end inefficient fossil fuel subsidies over a decade ago but progress has been limited, with support fluctuating with fuel prices. Covid-19 provided an opportunity but green recovery spending has been outweighed by continued fossil fuel support. - Reforming fossil fuel subsidies is difficult due to debates around what constitutes a subsidy and inefficiency, as well as economic and social concerns about price rises. However, the OECD provides tools and a sequential approach to identify subsidies and their impacts, and design alternative policies to alleviate distributional effects of reform. Gradual implementation anchored in emissions reduction and periodic review are also recommended.