Monaco

Last Updated: 2026-03-31

Official Portal: Direction des Services Judiciaires — Nationality

Embassy Finder: Monegasque Diplomatic Missions

Quick Facts

Category	Details
Residency for naturalization	10 years of continuous residence after age 18
Language requirement	French (official language; must demonstrate proficiency)
Civics test	No formal test; interview assesses knowledge of Monaco’s institutions
Processing time	12—36 months; naturalization is granted by Sovereign Ordinance (decision of the Prince)
Naturalization fee	Administrative fees apply (not publicly fixed)
Dual citizenship	Conditional — Monegasques by naturalization must renounce; Monegasques by origin may hold dual nationality
Citizenship by birth in Monaco	No jus soli
Citizenship by descent	Automatic for children of a Monegasque father; conditional for children of a Monegasque mother
Governing law	Loi No. 1.155 du 18 décembre 1992 sur la nationalité (Nationality Law, as amended by Law No. 1.387 of 2011 and subsequent reforms)

Dual Citizenship

Monaco takes a conditional approach to dual citizenship, with different rules depending on how nationality was acquired.

Monegasques by origin (born to a Monegasque parent): May hold dual or multiple citizenship without restriction. Acquiring a foreign nationality does not cause loss of Monegasque nationality.

Monegasques by naturalization: Were historically required to renounce prior nationalities. Recent reforms have softened this in practice, but the government retains discretion to require renunciation as a condition of naturalization.

Foreign nationals naturalizing in Monaco: The Sovereign Prince may impose conditions including renunciation of prior nationality. This is assessed on a case-by-case basis.

Practical context: Monaco has approximately 9,600 Monegasque citizens out of a total resident population of about 39,000. The government maintains strict control over nationality grants to preserve the demographic balance of this 2 km2 city-state.

Acquisition of Nationality

By Birth (Jus Sanguinis Only)

Monaco follows a strict jus sanguinis system. There is no jus soli — birth in Monaco does not confer nationality.

A child acquires Monegasque nationality at birth if:

The father is Monegasque (regardless of where the child is born).
The mother is Monegasque and the father is stateless or of unknown nationality.
The mother is Monegasque and the child is born in Monaco (since the 2011 reform, which expanded maternal transmission).

Historical note: Before the 2011 reform, Monegasque nationality passed primarily through the father. The reform introduced broader maternal transmission, but it remains more conditional than paternal transmission.

By Descent

Monegasque nationality descends primarily through the paternal line without generational limit, provided the chain of citizenship is documented. Maternal descent has been expanded by the 2011 reform but may require a declaration or application in certain cross-border scenarios.

By Adoption

A child adopted by a Monegasque citizen may acquire Monegasque nationality, but it is not automatic. The acquisition depends on the form of adoption (full adoption vs. simple adoption under French-influenced Monegasque civil law) and is subject to government approval.

By Marriage

A foreign woman who marries a Monegasque man may acquire Monegasque nationality by declaration after 10 years of marriage (reduced from the previous period by the 2011 reform). A foreign man who marries a Monegasque woman may apply for naturalization after the same period but through the standard naturalization process (Sovereign Ordinance).

Conditions:

The marriage must have subsisted for at least 10 years at the time of the declaration or application.
The couple must be living together.
The applicant must have maintained continuous residence in Monaco.

By Naturalization

Naturalization in Monaco is highly discretionary and granted by Sovereign Ordinance (decision of the reigning Prince).

Requirement	Details
Lawful residence	10 years of continuous residence in Monaco after age 18
Language	Proficiency in French
Integration	Demonstrated integration into Monegasque society and economy
Financial means	Must demonstrate substantial financial resources (Monaco has no income tax but extremely high living costs)
Criminal record	Clean criminal record
Renunciation	May be required at the Prince’s discretion
Prior nationality	Must have relinquished any prior nationality if required by the Sovereign Ordinance
Interview	Personal interview with Monegasque authorities

Key features:

Naturalization is entirely at the discretion of the Sovereign Prince. There is no right to naturalization even if all conditions are met.
The number of naturalizations is extremely small each year (typically fewer than 100 per year for all pathways combined).
Monaco’s unique tax environment (no personal income tax) means that financial scrutiny of applicants focuses on wealth and stability rather than tax contributions.

Loss and Renunciation

Voluntary Renunciation

A Monegasque citizen may renounce nationality by declaration, provided:

The person holds or has been assured another nationality.
The renunciation is accepted by the government.

Involuntary Loss

Monegasque nationality may be lost if:

A person who acquired nationality by naturalization is found to have obtained it through fraud or false declarations (revocation by Sovereign Ordinance).
A Monegasque who acquired nationality by naturalization voluntarily acquires another nationality without authorization (at the government’s discretion).
A Monegasque woman who acquired nationality through marriage loses it if the marriage is annulled (unless she has held it for 10+ years).

Monegasques by origin do not lose nationality by acquiring a foreign citizenship.

Restoration of Nationality

Former Monegasque citizens who lost nationality may apply for restoration. The process is handled through the Direction des Services Judiciaires. Restoration is discretionary and subject to the same general conditions as naturalization, though the residency requirement may be waived or reduced.

Persons who lost nationality through marriage (under older provisions affecting women who married foreign nationals) may have a simplified restoration pathway under the 2011 reforms.

Stateless Persons and Foundlings

A child found on Monegasque territory whose parents are unknown is presumed to be Monegasque until proven otherwise.
Monaco’s small size and controlled immigration mean that statelessness cases are rare and handled individually.

Document Checklist

Formal application for naturalization addressed to the Prince of Monaco (through the Direction des Services Judiciaires)

Valid passport or travel document

Birth certificate (apostilled/legalized, with certified French translation)

Marriage certificate (if applying via marriage pathway)

Proof of 10 years continuous residence in Monaco after age 18

Criminal background check from Monaco and countries of prior residence

Proof of financial resources (bank statements, property documentation, investment portfolio)

Proof of French language proficiency

Evidence of integration into Monegasque society

Certificate of residence (attestation de résidence from the Monegasque authorities)

Two biometric passport photos

Evidence of renunciation of prior nationality (if required by authorities)

Sources

Loi No. 1.155 du 18 décembre 1992 sur la nationalité — As amended by Law No. 1.387 of 2011 and subsequent reforms. Journal de Monaco. https://journaldemonaco.gouv.mc/
Gouvernement Princier de Monaco — Official government portal, nationality information. https://www.gouv.mc/
Direction des Services Judiciaires — Nationality applications and legal procedures. https://www.gouv.mc/
Service de l’État Civil — Civil registry of Monaco, birth and marriage records. https://www.gouv.mc/
Global Citizenship Observatory (GLOBALCIT) — Comparative citizenship law database, Monaco country profile. https://globalcit.eu/

Monaco.mc

Country Snapshot