This paper analyses the economic and environmental impacts of CAP greening. The simulated results reveal that the economic and environmental impacts of CAP greening are rather small. The CAP greening leads to a small increase in prices and a small decrease in production. Farm income slightly increases because the price effects offset the production decline. The environmental effects are positive on a per hectare basis, but the increase in UAA can reverse the sign for total impacts. GHG and ammonia emissions decrease in the EU, while the total N surplus, soil erosion and biodiversity-friendly farming practices slightly increase.