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..
Involuntary 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.
Summary
- 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
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


The involuntary loss of citizenship is caused by 4 modes in EU member states
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
