Vatican City’s government and legal system work as an elective absolute monarchy in which the Pope personally holds the fullness of legislative, executive, and judicial power, delegating day-to-day administration to a papal commission and running a four-tier court system that leans on the Code of Canon Law whenever its own statutes fall silent.1The Holy See. Fundamental Law of Vatican City State The territory covers about 109 acres inside Rome and houses roughly 882 residents, but the governing structure is designed less for those residents than for the Holy See, the spiritual leadership of the Catholic Church, whose sovereignty this small state exists to protect.2Vatican City State. Population
Who Holds Power
The document that functions as Vatican City’s constitution is the Fundamental Law of Vatican City State, most recently reissued by Pope Francis on May 13, 2023.1The Holy See. Fundamental Law of Vatican City State It opens by vesting “the fullness of legislative, executive and judicial powers” in the reigning Pope. There is no separation of powers in the modern sense: the same office writes the laws, enforces them, and stands as the final court of appeal.
When a Pope dies or resigns, the territory enters a period called sede vacante, “the seat being vacant.” During that interval the College of Cardinals temporarily exercises the powers the Fundamental Law otherwise reserves to the Pope, but only within the limits the same law sets. Ordinary governance resumes as soon as a new Pope is elected.
Because one person cannot personally draft parking regulations or building codes, day-to-day lawmaking is delegated to the Pontifical Commission for Vatican City State. Under the 2023 reform the commission is chaired by a cardinal president and includes six other cardinals plus, for the first time, lay members appointed by the Pope for five-year terms. It drafts and approves the regulations that govern labor standards, construction, public safety, and the other administrative matters any small state has to handle. Approved legislation is then published in the supplement to the Acta Apostolicae Sedis, the official gazette of the Holy See.3Catholic University of America Law Library. Vatican City State Legal Research Guide – Section: Official Publications
Holy See or Vatican City State
Two distinct legal entities operate from the same enclave, and confusing them makes the governance structure impossible to read. The Holy See is the central governing body of the Catholic Church worldwide. It predates Vatican City by centuries, holds its own separate legal personality under international law, signs treaties, sends ambassadors, and sits at the United Nations. Vatican City State is the physical territory with borders, buildings, and residents, created in 1929 to give the Holy See sovereign ground to operate from.
The practical split matters. A concordat with a foreign country is signed by the Holy See. A crime committed on Vatican grounds is prosecuted by Vatican City State courts. The Pope leads both, but the two entities do different jobs, and Vatican legislation applies only to the territory, not to Catholics or Church institutions elsewhere.
How Laws Are Made, and What Fills the Gaps
Vatican City’s own legislation is relatively thin, which is deliberate. When a civil statute is silent on a legal question, the Code of Canon Law serves as the primary supplementary source. That means any gap in the state’s written law is filled by principles consistent with Catholic teaching rather than by borrowing from Italian or European law. The result is a legal system with two interlocking layers: secular administrative rules on top, canon law underneath, and no daylight assumed between them.
This structure also explains why Vatican legislation tends to focus on practical administration — labor, buildings, finances, security — rather than on the broader questions a normal civil code would cover. Those broader questions already have an answer in canon law.
The Court System and Criminal Jurisdiction
Vatican City runs a four-level court structure.4Vatican City State. Judicial Function A sole judge handles minor matters at the base. Above that sits the Tribunal, composed of three judges appointed by the Pope, which hears both civil and criminal cases. The Court of Appeal reviews Tribunal decisions, and the Court of Cassation stands at the top as the final appellate body, checking that procedural rules were properly followed. Prosecution is handled by the Office of the Promoter of Justice, which combines investigation and prosecution in a single office.
The Vatican has jurisdiction over crimes committed within its borders, but in practice most ordinary criminal cases are transferred to Italy for prosecution. What the Vatican courts do try are the high-profile matters that involve Vatican officials or Vatican finances. Recent sentences give a sense of range: in a major financial trial concluded in late 2023, defendants received prison terms running from three years to more than seven for offenses including embezzlement and fraud, and a former Institute for the Works of Religion president was sentenced in a separate case to nearly nine years for money laundering and aggravated embezzlement.
Above all of this sits the Pope’s personal authority to grant amnesty, pardons, or reduced sentences to anyone convicted.1The Holy See. Fundamental Law of Vatican City State That power flows directly from the same concentration of authority the Fundamental Law sets out at the start.
Cooperation With Italy Under the Lateran Treaty
The Vatican’s ability to hand off most criminal matters to Italy comes from the Lateran Treaty, signed on February 11, 1929, which created Vatican City in the first place and resolved the decades-old standoff over the Pope’s territory.5Lateran Treaty. Treaty Between the Holy See and Italy Under Article 22 of that treaty, Italy agrees to punish offenses committed inside Vatican City when the Holy See requests it, and the Vatican agrees to hand over anyone accused of crimes in Italian territory who has taken refuge within its walls.
No formal bilateral extradition treaty exists between the two. Article 22 does the work an extradition agreement would normally do, and both parties are also signatories to the United Nations Convention against Corruption, which some legal scholars read as providing an additional framework for transferring accused persons across the border.
Police and the Swiss Guard
Actual policing is done by the Gendarmerie Corps, which functions as Vatican City’s regular police force. It handles public order, border control, traffic enforcement, crime prevention, and judicial police duties, and it also protects the Pope during travel inside Italy and abroad. Its jurisdiction extends to the extraterritorial properties of the Holy See, including the major papal basilicas that sit outside Vatican walls. The Corps runs specialized units for rapid intervention and anti-sabotage work.6Vatican City State. Gendarmerie Corps
The Pontifical Swiss Guard is a separate force with a different role. Founded in 1506 and made up of about 135 Swiss citizens, it serves as the Pope’s personal bodyguard and provides the ceremonial presence at Vatican entrances and papal events. It is a military corps, not a police force, and its members hold Vatican citizenship only for the duration of their enlistment.
Citizenship Through Office, Not Birth
Because Vatican City exists to support the Holy See rather than to house a permanent population, its citizenship rules look nothing like those of a normal state. Nobody becomes a Vatican citizen by being born there or by descent. Citizenship is granted through jus officii: you hold it because your job or office requires you to.7Rights Mapping and Analysis Platform. Holy See Most citizens are cardinals resident in Rome, senior members of the Roman Curia, members of the Swiss Guard, or other officials whose positions require residence in Vatican territory or papal authorization to live in Rome.
The citizenship law, originally enacted on June 7, 1929, extends eligibility to a citizen’s spouse, children, parents, and siblings, provided they live with the citizen and are authorized to reside in Vatican City.8United Nations. Vatican City Act of 7 June 1929 Relative to Citizenship and Sojourn Family citizenship ends when the primary officeholder’s authorization ends. The officeholder’s own citizenship terminates automatically when the office, employment, or authorization that justified it ceases.
Nobody is left stateless by this arrangement. Under Article 9 of the Lateran Treaty, anyone who loses Vatican citizenship and does not already hold another nationality is automatically considered an Italian citizen.5Lateran Treaty. Treaty Between the Holy See and Italy The Italian safety net is what allows Vatican citizenship to be so tightly tied to function without creating gaps in legal protection when someone leaves papal service.