The paper examines opportunities for deeper economic integration between the EU and the Western Balkans and assesses their potential economic impact. It documents key non-tariff barriers to Western Balkan–EU industrial goods trade—covering regulatory, customs, and border-logistics frictions—amounting to around 8–14 percent ad valorem equivalent. Reducing these barriers, alongside deeper agri-food and services integration, could generate substantial gains, allowing the Western Balkans to capture roughly one-quarter to one-half of the economic benefits of full EU membership while supporting EU objectives related to nearshoring, supply-chain resilience, regional integration, and connectivity.