Will the EU Expand Further by 2030?

Ukraine and Moldova received EU candidate status in June 2022 — a decision made in days rather than the usual years, reflecting unprecedented geopolitical urgency following Russia's invasion. Ukraine opened formal accession negotiations in June 2024. However, Ukraine must complete all 35 EU accession negotiating chapters, reform its judiciary, address corruption (Transparency International ranks Ukraine 104th globally), and resolve active war conditions — making full membership before 2030 extremely challenging. European Commission President von der Leyen has stated that EU membership could be achieved 'within a decade' from 2024, implying a 2030–2034 realistic window for Ukraine. Moldova (EU membership opened negotiations June 2024) is smaller, less complex, and more advanced in reforms — making it a potential 'fast-track' candidate.

Western Balkans candidates have been waiting for EU membership for over 20 years — Serbia and Montenegro began accession negotiations in 2012 and 2012 respectively, Albania in 2022, North Macedonia in 2022 (after resolving the name dispute with Greece). The repeated delays have created significant public disillusionment — 'enlargement fatigue' on both sides. EU surveys show that Balkan publics who believed membership was 'likely' have fallen from 60%+ in 2010 to below 40% in 2025. Montenegro is the most advanced candidate, having opened all 33 qualifying chapters, making it a plausible first mover before 2030.

Russia's 2022 invasion of Ukraine fundamentally changed the EU's political calculus on enlargement. The previously slow enlargement process — driven by bureaucratic requirements — has been reframed as a geopolitical imperative: either the EU expands its zone of stability and rule of law, or the security vacuum is filled by Russian influence, Chinese investment, or fragile nationalism. European Commission reports in 2023–2025 explicitly link enlargement to European security architecture. The political will that was missing from 2004–2022 has been partially restored, though member state unanimity requirements still create blocking opportunities for individual countries (Hungary has used this leverage repeatedly).

The EU's current institutions were designed for 15 members and are straining with 27. Adding 6–10 more members would make decision-making unworkable under current rules. The unanimity requirement in the Council (used for foreign policy, taxation, treaty changes) would give each new member a veto over all major EU decisions. EU member states have discussed institutional reform — including qualified majority voting extensions and reduced Commission size — since the 2003 Convention on the Future of Europe, but have repeatedly failed to implement changes. A meaningful enlargement round likely requires prior institutional reform, and institutional reform is politically contentious (requires Treaty change and ratification by all 27 members).

EU accession requires all 35 negotiating chapters to be completed and verified, including Chapter 23 (Judiciary and Fundamental Rights) and Chapter 24 (Justice, Freedom and Security) — historically the hardest for Balkans candidates to close. The EU's experience with post-accession democratic backsliding in Hungary and Poland has made it more cautious about admitting countries without robust rule-of-law foundations. The 'Copenhagen criteria' — democratic governance, functioning market economy, ability to adopt EU law — are now applied more stringently. Ukraine's judiciary and anti-corruption agencies face significant EU scrutiny.

EU structural and cohesion funds are distributed based on GDP-per-capita. Adding Ukraine (population 40M+, GDP per capita ~$3,500) and Western Balkans countries would dramatically redistribute EU funding, reducing transfers to current recipient countries like Poland, Romania, Hungary, and Bulgaria. This creates a political economy problem: current net recipients oppose enlargement that would reduce their EU transfers. Net contributor countries (Germany, France, Netherlands) face higher budget contributions. The EU's 2021–2027 Multiannual Financial Framework did not budget for enlargement, and a revised framework would require unanimous approval — providing multiple veto points.

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Nguồn: European Commission Enlargement Progress Reports, October 2025

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Nguồn: European Council on Foreign Relations (ECFR), 2025 Enlargement Study

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Nguồn: Polymarket / Metaculus Political Markets, April 2026

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Nguồn: Janis Emmanouilidis, European Policy Centre, 2025

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Nguồn: Viktor Orbán / Hungary Government, March 2026