India-UK CETA trade deal: Tariff cuts, carbon tax challenges, and climate implications explained

The India-UK Comprehensive Economic and Trade Agreement (CETA) entered into force on July 15, 2026, eliminating tariffs on nearly 99% of Indian exports to the UK. The deal covers goods, services, investment, and environmental standards, with a notable focus on carbon tax challenges that will affect how both countries manage emissions in traded sectors. Key climate-related provisions include labor and environmental standards tied to trade preferences, which could push Indian exporters toward cleaner production methods to maintain zero-duty access. The agreement also sets a framework for addressing carbon border adjustments, as the UK moves toward implementing its own carbon tax on imports. This creates both risks and opportunities for Indian industries in sectors like steel, chemicals, and automobiles that face higher carbon costs. For carbon markets and climate policy watchers, CETA represents an early test case of how trade agreements can incorporate carbon pricing mechanisms and environmental conditionality. The phased tariff reductions on automobiles, especially the 10% in-quota rate for large-engine vehicles, may accelerate the shift toward electric vehicle imports and domestic EV manufacturing in India.