This guidance provides support to European Member States to further enhance systematic ex-post evaluation of Effort Sharing related policies. The Effort Sharing legislation establishes binding annual greenhouse gas emission (GHG) targets for Member States for the periods 2013-2020 and 2021-2030. These targets concern emissions from most sectors not included in the EU Emissions Trading System (EU ETS), such as transport, buildings, agriculture and waste. The national targets will collectively deliver a reduction of around 10% in total EU emissions from the sectors covered by 2020 and of 30% by 2030, compared with 2005 levels. Together with a 21% cut in emissions covered by the EU ETS by 2020 and 43% by 2030, this will allow the EU to achieve its climate targets for 2020 and 2030.This guidance covers reporting of evaluation results as well as the learning of lessons from ex-post evaluations for the design of future policies from Member States.