UK to Include International Aviation and Shipping Emissions in Carbon Budgets Starting 2033

### Context Governments establish Carbon Budgets, which are legally binding limits on the total amount of greenhouse gases a country can emit over a specific period, typically five years. These budgets serve as a foundational tool for national climate policy, driving emissions reductions across various economic sectors. Historically, international aviation and shipping emissions presented a complex challenge for national accounting due to their cross-border nature. While significant contributors to global emissions, they often remained outside domestic climate targets, creating a gap in comprehensive national climate action.

### Key Facts The UK government has confirmed it will add its share of international aviation and shipping emissions to its Carbon Budgets from 2033 onward. This decision directly integrates emissions from flights departing the UK for international destinations and voyages by ships under the UK's responsibility. The official confirmation arrived via a letter sent to the chair of the Environmental Audit Committee earlier this month. This letter specified the government's plan to directly account for these emissions within its future five-year budget cycles, beginning with the sixth Carbon Budget period.

### What It Means Including international aviation and shipping emissions within Carbon Budgets means the UK will factor these alongside domestic emissions when setting future climate policy. This expanded scope of responsibility will likely influence investment and innovation in cleaner fuels, propulsion technologies, and operational efficiencies for both air travel and maritime transport. The decision provides a clearer framework for sectors previously operating under less direct national emissions oversight.

This step aligns the UK's approach with a more comprehensive view of its total climate impact. Going forward, policymakers will focus on how this integration impacts the UK's ability to meet its legally binding net-zero commitments by 2050 and its international standing in global climate action. The implementation of this policy from 2033 will be a key area for observation.