This Practice Note aims to assist immigration advisers to research whether a country that is a member of the EEA and Switzerland, permits dual or multiple citizenship. This information may be helpful for immigration advisers with clients who are considering making an application for British citizenship or citizenship of another EEA country or Switzerland, in light of the UK’s departure from the EU.

Each country has its own laws regarding who can obtain citizenship and whether dual or multiple citizenship is permitted. These laws are subject to change so up-to-date information should be sought and verified. Clients should also be advised to consider whether making a citizenship application may have tax or other implications, for example on the citizenship or immigration position of their family members.