Impacts of Carbon Motivated Border Tax Adjustments Small

National Bureau of Economic Research (Dong, Whalley - Purchase Req'd) - This paper discusses the size of impact of carbon motivated border tax adjustments on world trade. We report numerical simulation results which suggest that impacts on welfare, trade, and emissions will likely be small. This is because proposed measures use carbon emissions in the importing country in producing goods similar to imports rather than carbon content in calculating the size of barriers. Moreover, because border adjustments involve both tariffs and export rebates, it is the differences in emissions intensity across sector rather than emissions level which matters. Where there is no difference in emissions intensities across sectors, Lerner symmetry holds for the border adjustment and no relative effects occur.

In trade impacts, compared with no BTAs, BTAs reduce imports of committing countries, and increase imports by other countries. EU and US BTAs against China reduce exports by China. With BTAs, the value of production in the country with carbon reduction measures are introduced increases, and other countrys production decreases compared with the case of no BTAs.