This study examines the implications of future enlargements for the next MFF. It reviews adjustments made to the EU budget during past enlargements and estimates the budgetary costs of the accession of all current candidate and potential candidate countries (excluding Türkiye) under three alternative scenarios which distinguish between the number of enlargement countries and the timing of enlargement. It then provides policy recommendations for adapting the next MFF to enlargement. The study was prepared at the request of the Committee on Budgets.