Can border carbon taxes fit into the global trade regime? Bruegel Policy Brief 2013/06, 9 December 2013

One complement to domestic climate policies could be the regulation of carbon dioxide emissions arising during the production of imported products. Such ‘border carbon adjustments’ (BCAs) are said to have several benefits, but are also severely criticised. This Policy Brief highlights some weaknesses in the standard argumentation for BCAs. But there is an alternative argument for border carbon measures, based on the fact that countries expose each other to climate externalities. The reformulated argument is economically more convincing, and provides a more convincing justification for the extraterritorial feature of border carbon measures. However, there are also several important factors mitigating against the implementation of such measures, including the risk that these measures will be used for protectionism. One complement to domestic climate policies could be the regulation of carbon dioxide emissions arising during the production of imported products. Such ‘border carbon adjustments’ (BCAs) are said to have several benefits, but are also severely criticised. This Policy Brief highlights some weaknesses in the standard argumentation for BCAs. But there is an alternative argument for border carbon measures, based on the fact that countries expose each other to climate externalities. The reformulated argument is economically more convincing, and provides a more convincing justification for the extraterritorial feature of border carbon measures. However, there are also several important factors mitigating against the implementation of such measures, including the risk that these measures will be used for protectionism.