Chile ratified the Paris Agreement in February 2017, through Supreme Decree No. 30 of the Ministry of Foreign Affairs, and presented its Tentative National Contribution (INDC) to the United Nations Framework Convention on Climate Change in September 2015. In April 2020 and in response to the requirements of the Paris Agreement to update commitments every five years, Chile formally presented the update of its Nationally Determined Contribution (NDC). This milestone makes it one of the first countries in the world to update their climate action commitments. The updated NDC also responds to the greater requirements of the scientific community and includes commitments in five areas: i) social pillar of just transition and sustainable development, ii) mitigation, iii) adaptation, iv) integration, and v) means of implementation.

In terms of mitigation, Chile undertook to replace the previous emissions intensity indicator with an unconditional absolute indicator, with a target to reach 95 MtCO2eq by 2030, a maximum emission (peak year) by 2025 and a carbon budget that does not overcome 1,100 MtCO2eq for the period 2020-2030.