LAUSR

Abstract The withdrawal of the United Kingdom (UK) from the European Union (EU) opens an unprecedented scenario for the UK and EU economy. One of the sensitive points concerns the banking sector. This paper considers the impact of the Brexit referendum on the bank efficiency. Using stochastic frontier analysis (SFA) methods, an input-oriented distance function was estimated for 56 British and Ireland leading banks over the 2007 to 2016 period. Results suggest that the uncertainty created by the 2016 referendum has negatively influenced the banking sector. The loss of efficiency is estimated in 5.6% for UK banks and 3.7% for Ireland banks.