How many of the negotiating chapters required to join the EU will Montenegro have closed at the end of 2026?

Montenegro’s EU accession chapters: year-end 2026 forecast

Executive Summary

The forecast median is 29 provisionally closed chapters, with a 10th–90th percentile span of 25–33, as of 23:59 CET on 31 December 2026.

The forecast favors substantial further progress, but not completion of every chapter as the central outcome. Full closure remains a plausible upside scenario.

The starting point has changed materially since the question was submitted: the latest official total is 21, following the accession conference on 12 October 2026, rather than the description’s March count of 14. Twelve chapters remain open. The main constraint is now securing EU assessments and unanimous member-state approval—especially for the final political and rule-of-law package—not simply submitting Montenegro’s negotiating documents.

Only formal provisional closures at an EU–Montenegro Accession Conference count. National declarations of readiness, draft negotiating positions and political commitments do not.

Key drivers

A substantial pipeline supports further closures

The Council working-party agenda issued on 22 October listed draft EU common positions for seven remaining chapters. These are proposed negotiating stances being considered by member states, not closure decisions, but they demonstrate that several files are moving in parallel.

On 23 October, European Affairs Minister Maida Gorčević also announced that Montenegro had submitted all remaining negotiating positions and closing-benchmark reports. Her statement acknowledged that European evaluations and member-state decisions were still outstanding. This supports momentum without establishing that every condition has been accepted.

Prepared chapters can still miss a conference

The Dutch government’s 2 October briefing identified seven closure proposals and described support, or a route to support, for several. Only three chapters subsequently closed at the October conference. That gap is concrete evidence of scrutiny and timing risk.

Multi-chapter closures are nevertheless feasible: Montenegro closed five chapters at one conference in December 2025. Historical pace is therefore a useful caution, not a fixed limit on the size of a year-end package.

Croatia remains the principal named political obstacle

On 22 October, Croatian Prime Minister Andrej Plenković linked outstanding bilateral issues to Chapters 23 and 31. He acknowledged progress on the Morinj memorial and Kotor swimming-pool name, while identifying unresolved matters involving compensation, missing persons, war-crimes proceedings, property, the training ship Jadran and the border.

His statements leave room for staged implementation or an interim agreement, but do not establish that Croatia has accepted such an arrangement as sufficient for approval. The latest retrieved interview, published on 24 October, maintained conditional support without promising year-end clearance.

The final chapters are linked, not independent

The Council’s accession methodology says Chapters 23 and 24—the chapters covering judiciary and fundamental rights, and justice, freedom and security—should close last. A hold on another chapter can therefore delay this final package as well.

Domestic prerequisites also remained unfinished. On 14 October, the EU ambassador identified pending constitutional amendments, Judicial Council appointments and establishment of the Central Election Commission. Subsequent committee approval of draft constitutional amendments was progress, but not completion of the parliamentary process.

Scenarios

The forecast weighs the following paths qualitatively. Their weights reflect judgment about the evidence, not measured historical frequencies.

Implications

• Plan for major progress without making full completion a dependency. The central outcome still leaves negotiations unfinished at year-end.
• Focus senior attention on approval bottlenecks. Croatian consent, completion of domestic institutional reforms and clearance of EU common positions matter more now than further announcements that documents have been submitted.
• Track formal decisions rather than headline readiness claims. Treaty-drafting work and national declarations are useful signals, but neither substitutes for the conference decisions that determine this question. Provisional closure also remains reversible.

Signs to watch

Research and methodology

The forecast starts from the official cumulative count and uses a chapter-level probability model that allows shared political and procedural risks to affect several chapters together. It treats the final rule-of-law package as linked to progress elsewhere, rather than assuming every chapter is an independent event. Historical conference records were assembled to check the feasibility of batch closures, not to extrapolate a constant closure rate.

The sources carrying the greatest weight were:

• Official Council closure records: the 12 October conference release establishes the current count; the Council chronology documents earlier closures. Dated conference records take precedence over stale general-page figures.
• Council processing and national scrutiny: the October working-party agenda demonstrates an active pipeline. The Dutch government briefing, available through a parliamentary-document mirror, shows why readiness need not translate immediately into closure.
• Institutional rules and collective EU commitments: the Council’s revised methodology supplies sequencing and reversibility provisions. The 16 October European Council conclusions support further closures conditionally, without guaranteeing year-end completion.
• Primary statements on unresolved conditions: the Croatian government’s 22 October account informs the political risks; the EU ambassador’s 14 October statement identifies domestic institutional tasks.
• Timing information: the European Parliament research briefing identifies the expected Commission package, while Council pages confirm the 19 November and 15 December meetings.

Limitations

The research could verify that advanced draft positions exist, but could not inspect a complete member-by-member approval record; some substantive drafts were not publicly accessible. It also could not establish the minimum interim settlement Croatia would accept to release its reservations. These gaps leave uncertainty about unresolved objections and clearance timing. Missing public documents should not be interpreted as evidence that negotiations have stopped.