EU citizenship was established in 1991 by the Treaty on European Union in order to promote European values and identity. The Treaty confers on EU citizens a set of rights, such as the right of free movement, the right of diplomatic protection, the right to vote in and stand for elections to the European Parliament.8 Some of these rights can be exercised only when moving from one Member State to another. EU citizenship depends strictly on national citizenship, since EU citizens are only those who already hold the citizenship of an EU Member State. Member States reserve the right to regulate the acquisition and loss of national citizenship in ways that reflect their interests and identities.

Today we will look at loss of citizenship in EU member states through involuntary (without conscious control or will). Sometimes you wont even know you lost your citizenship. Involuntary loss is the worst way to lose your citizenship without even knowing it, especially you are spending your life abroad.. This loss may occur due to either automatic lapse of citizenship from the citizen for failure to take some action to retain citizenship, or active withdrawal of citizenship by the country.

  • Citizenship can be revoked on grounds of treason or disloyalty. (in 15 EU countries)
  • Deprival of citizenship happens, if they take service in a foreign army (in 12 EU countries)
  • Prolonged residence abroad is grounds for the involuntary loss of citizenship in 10 EU countries.
  • Dual citizenship restrictions (acquisition of another citizenship) may cause loss of citizenship in 9 EU member states

Prolonged residence abroad is also very important for many citizens, who tend to forget or not really aware they are losing citizenship. This applies to two types of citizens.

  • Naturalized citizens only – Cyprus, Ireland and Malta,
  • Citizens born abroad only – Belgium, Denmark, Spain and Sweden

Involuntary loss of EU citizenship

Source: European Commission

Austria

  • Residence abroad – NO
  • Acquisition of other citizenship (dual nationality) – YES
  • Service in a foreign army – YES
  • Disloyalty/ treason – NO
  • Fraudulent acquisition – YES

Belgium

  • Residence abroad – YES
  • Acquisition of other citizenship (dual nationality) – NO
  • Service in a foreign army – NO
  • Disloyalty/ treason – YES
  • Fraudulent acquisition – YES

Bulgaria

  • Residence abroad – NO
  • Acquisition of other citizenship (dual nationality) – NO
  • Service in a foreign army – NO
  • Disloyalty/ treason – YES
  • Fraudulent acquisition – YES

Croatia

  • Residence abroad – NO
  • Acquisition of other citizenship (dual nationality) – NO
  • Service in a foreign army – NO
  • Disloyalty/ treason – NO
  • Fraudulent acquisition – NO

Cyprus

  • Residence abroad – YES
  • Acquisition of other citizenship (dual nationality) – NO
  • Service in a foreign army – YES
  • Disloyalty/ treason – YES
  • Fraudulent acquisition – YES

Czechia

  • Residence abroad – NO
  • Acquisition of other citizenship (dual nationality) – NO
  • Service in a foreign army – NO
  • Disloyalty/ treason – NO
  • Fraudulent acquisition – YES

Denmark

  • Residence abroad – YES
  • Acquisition of other citizenship (dual nationality) –
  • Service in a foreign army –
  • Disloyalty/ treason – YES
  • Fraudulent acquisition – YES

Estonia

  • Residence abroad – NO
  • Acquisition of other citizenship (dual nationality) – YES
  • Service in a foreign army – YES
  • Disloyalty/ treason – YES
  • Fraudulent acquisition – YES

Finland

  • Residence abroad – YES
  • Acquisition of other citizenship (dual nationality) – NO
  • Service in a foreign army – NO
  • Disloyalty/ treason – NO
  • Fraudulent acquisition – YES

France

  • Residence abroad – YES
  • Acquisition of other citizenship (dual nationality) – NO
  • Service in a foreign army – YES
  • Disloyalty/ treason – YES
  • Fraudulent acquisition – YES

Germany

  • Residence abroad – NO
  • Acquisition of other citizenship (dual nationality) – YES
  • Service in a foreign army – YES
  • Disloyalty/ treason – NO
  • Fraudulent acquisition – YES

Greece

  • Residence abroad – NO
  • Acquisition of other citizenship (dual nationality) – NO
  • Service in a foreign army – YES
  • Disloyalty/ treason – YES
  • Fraudulent acquisition – YES

Hungary

  • Residence abroad – NO
  • Acquisition of other citizenship (dual nationality) – NO
  • Service in a foreign army – NO
  • Disloyalty/ treason – NO
  • Fraudulent acquisition – YES

Ireland

  • Residence abroad – YES
  • Acquisition of other citizenship (dual nationality) – YES
  • Service in a foreign army – NO
  • Disloyalty/ treason – YES
  • Fraudulent acquisition – YES

Italy

  • Residence abroad – NO
  • Acquisition of other citizenship (dual nationality) – NO
  • Service in a foreign army – YES
  • Disloyalty/ treason – NO
  • Fraudulent acquisition – YES

Latvia

  • Residence abroad – NO
  • Acquisition of other citizenship (dual nationality) – YES
  • Service in a foreign army – YES
  • Disloyalty/ treason – YES
  • Fraudulent acquisition – YES

Lithuania

  • Residence abroad – NO
  • Acquisition of other citizenship (dual nationality) – YES
  • Service in a foreign army – YES
  • Disloyalty/ treason – YES
  • Fraudulent acquisition – YES

Luxembourg

  • Residence abroad – NO
  • Acquisition of other citizenship (dual nationality) – NO
  • Service in a foreign army – NO
  • Disloyalty/ treason – NO
  • Fraudulent acquisition – YES

Malta

  • Residence abroad – NO
  • Acquisition of other citizenship (dual nationality) – NO
  • Service in a foreign army – YES
  • Disloyalty/ treason – YES
  • Fraudulent acquisition – YES

Netherlands

  • Residence abroad – YES
  • Acquisition of other citizenship (dual nationality) – YES
  • Service in a foreign army – YES
  • Disloyalty/ treason – YES
  • Fraudulent acquisition – YES

Poland

  • Residence abroad – NO
  • Acquisition of other citizenship (dual nationality) – NO
  • Service in a foreign army – NO
  • Disloyalty/ treason – NO
  • Fraudulent acquisition – NO

Portugal

  • Residence abroad – NO
  • Acquisition of other citizenship (dual nationality) – NO
  • Service in a foreign army – NO
  • Disloyalty/ treason – NO
  • Fraudulent acquisition – YES

Romania

  • Residence abroad – NO
  • Acquisition of other citizenship (dual nationality) – NO
  • Service in a foreign army – YES
  • Disloyalty/ treason – YES
  • Fraudulent acquisition – YES

Slovakia

  • Residence abroad – NO
  • Acquisition of other citizenship (dual nationality) – YES
  • Service in a foreign army – NO
  • Disloyalty/ treason – NO
  • Fraudulent acquisition – YES

Slovenia

  • Residence abroad – NO
  • Acquisition of other citizenship (dual nationality) – NO
  • Service in a foreign army – NO
  • Disloyalty/ treason – YES
  • Fraudulent acquisition – YES

Spain

  • Residence abroad – YES
  • Acquisition of other citizenship (dual nationality) – YES
  • Service in a foreign army – YES
  • Disloyalty/ treason – NO
  • Fraudulent acquisition – YES

Sweden

  • Residence abroad – YES
  • Acquisition of other citizenship (dual nationality) – NO
  • Service in a foreign army – NO
  • Disloyalty/ treason – NO
  • Fraudulent acquisition – NO