Border carbon adjustments: Should production or consumption be taxed?
2023
Martin, Will
This paper has been accepted for publication in World Trade Review and will appear in a revised form subject to input from the Journal’s editor. Users may use this material subject to the conditions of a CC-BY-NC-ND (Creative Commons Non-Commercial No-Derivatives License). Suggested citation for this article: Martin, W. (2023). ‘Border Carbon Adjustments: Should Production or Consumption be Taxed?’ World Trade Review 1–13. https://doi.org/10.1017/S1474745623000113 Border Carbon Adjustments (BCAs) may play an important role in lowering the economic costs of greenhouse gas mitigation and in overcoming political-economy constraints on use of carbon taxes or equivalent measures. A carbon tax plus a full BCA could deal with the competitiveness challenges arising from carbon taxes by using the WTO’s National Treatment principle to apply equal levies on domestic production and on imports, and by symmetrically rebating the carbon tax on exports in the manner of a value-added tax (VAT) export rebate. This approach would shift the base for carbon taxation from production to demand and potentially achieve substantial reductions in the cost of cutting emissions. It would avoid the massive measurement and compliance problems associated with BCAs based on foreign emission intensities. By contrast, import-only BCAs distort prices of importables relative to exportables; create divisive trade conflicts and deterioration in the terms of trade for developing countries; and likely require development of complex sets of import preferences.
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