Italian citizenship by descent laws: what courts and consulates actually follow in 2026

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Italian citizenship jure sanguinis and the right to claim citizenship

Jure sanguinis, meaning right of blood, is the foundation of Italian citizenship law. Citizenship jure sanguinis recognizes nationality as something passed through family lineage, regardless of whether a person was born in Italy or born abroad.

Italian citizenship is not based on birthright citizenship. Being born in Italy does not automatically confer citizenship, and being born abroad does not prevent it. Therefore, what matters is the legal status of the Italian citizen parent at the time of the child’s birth.

Understanding jus sanguinis citizenship application rules is critical because they determine whether Italian citizenship automatically passes, whether a formal application is required, or whether judicial intervention is necessary. In addition, these rules are strictly applied by Italian authorities.

Naturalization and loss of Italian citizenship

One of the most common reasons citizenship applications fail is naturalization. In fact, if an Italian ancestor became a naturalized citizen of a foreign country before the child’s birth, Italian citizenship was not passed to future generations.

Moreover, if an ancestor naturalized before July 1, 1912, the unbroken chain of citizenship is considered broken under Italian law. This applies regardless of whether the ancestor later reacquired only Italian citizenship.

Italian consulates and Italian courts carefully review naturalization records, comparing them to the applicant’s birth date, the ancestor’s citizenship status, and any evidence that citizenship was lost or renounced. Therefore, accuracy in documentation is essential.

Furthermore, if an ancestor renounced Italian citizenship, whether explicitly or through foreign citizenship acquisition, eligibility ends at that point.

Maternal lines and the 1948 Rule

Italian nationality law historically restricted women from passing citizenship. However, under the 1948 Rule, Italian women could not pass citizenship to children born before January 1, 1948.

Therefore, if claiming citizenship through a female ancestor, she must have given birth after January 1, 1948, unless the child was born in Italy under limited maternal exceptions. These cases cannot be resolved through a local Italian consulate.

In addition, applications involving maternal lines before 1948 must be filed as judicial proceedings before Italian courts. The constitutional court has repeatedly held that these restrictions conflict with constitutional equality principles.

As a result, court-based applications have become the established path for maternal line cases under Italian citizenship by descent laws.

Application through the Italian Courts (Judicial Petition)

When, however, Italian citizenship by descent cannot be effectively pursued through a consulate or municipality, due to long waiting times, administrative obstacles, or legal issues such as the minor age naturalization question, many applicants may file a judicial petition before the competent Italian court. In practice, court-based citizenship applications are typically handled through an attorney in Italy and are submitted as a formal legal action requesting recognition of Italian citizenship jure sanguinis. Moreover, unlike consular procedures, this pathway does not require an in-person appointment abroad and is based on documentary evidence, legal arguments, and established case law. As a result, the court will review the family line, assess compliance with Italian citizenship rules, and issue a judgment. If granted, the decision is then transmitted for registration with the relevant Italian municipality (Comune), enabling the applicant to complete civil status registration and obtain Italian documentation.

Required documentation

To apply for Italian citizenship by descent, applicants must submit extensive documentation proving lineage, with requirements varying depending on the specific circumstances of each case.

In addition, all vital records must be translated into Italian and apostilled. Even minor discrepancies can result in delays or refusals.

Children born abroad and automatic acquisition

Finally, children born abroad to at least one Italian parent may acquire Italian citizenship automatically if the Italian citizen parent declares intent within three years of the child’s birth and will be free of charge (the €250 fee to the Ministry of the Interior is no longer required).

Therefore, this rule applies to children born abroad at a minor age and operates separately from standard citizenship by descent applications.