Starting a schism in the Catholic Church means deliberately refusing submission to the Pope and breaking communion with the faithful who recognize his authority. Under Canon 1364 §1, this offense triggers *latae sententiae* excommunication — a penalty that attaches automatically the moment the act occurs, without requiring a formal trial. The excommunicated person is barred from sacraments, liturgical roles, and church office. Reconciliation remains possible, however, and the full picture of consequences and recovery is worth exploring further.
What Schism Actually Means in the Catholic Church
The word “schism” traces back to the Greek *schisma*, meaning “division” or “separation,” and in Catholic teaching it carries a precise legal and theological weight.
Canon law defines it as the deliberate refusal to remain subject to the Pope or to stay in communion with Church members who recognize his authority.
Schism is not mere disagreement — it is the deliberate refusal to remain subject to papal authority.
Importantly, schism does not require rejecting any doctrine.
A person can hold every Catholic belief intact and still commit schism simply by severing that bond of unity.
The Catechism describes it as a voluntary act, one rooted in willful separation rather than doctrinal disagreement.
St. Paul explicitly condemned schism in his letters, warning the Corinthians in 1 Corinthians 12:25 that there should be no schism among them and that the faithful must cooperate in harmony as one body.
Under Catholic canon law, committing an act of schism results in automatic excommunication for the person responsible, a penalty described as medicinal in nature and oriented toward restoring unity.
Believers are encouraged to respond to division with humble correction and efforts toward reconciliation.
Why Schism Triggers Automatic Excommunication
When someone commits schism in the Catholic Church, the legal consequence follows immediately and automatically.
Canon 1364 §1 of the 1983 Code of Canon Law designates schism as one of the gravest offenses, placing it alongside heresy and apostasy as crimes warranting *latae sententiae* excommunication.
This Latin term means the penalty attaches the moment the act occurs, requiring no trial or formal declaration.
The Church classifies this as a medicinal penalty, meaning its purpose is correction rather than permanent removal.
The law intends to prompt repentance and restore the offender to full communion with the Church.
Schism is specifically defined as the refusal of submission to the Roman Pontiff or the refusal to remain in communion with members of the Church who are in communion with him.
Beyond excommunication, Canon 1364 §2 permits the addition of an expiatory penalty when the gravity of scandal calls for it.
Leaders and citizens alike are called to pursue justice and accountability before God, and the Church’s disciplinary measures aim ultimately at restoration to communion.
Which Groups and Individuals Have Been Excommunicated for Schism
Throughout Church history, several groups and individuals have faced excommunication for committing schism, with cases ranging from the medieval Western Schism of 1378–1417 to more recent disciplinary actions.
That 14th-century crisis involved two, then three, rival claimants to the papacy before Martín V restored unity in 1417.
More recently, in 2026, the Vatican excommunicated at least 750 priests from the Fraternidad Sacerdotal San Pío X, including Bishop Alfonso de Galarreta, for consecrating bishops without papal mandate.
In 2026, the Vatican excommunicated over 750 SSPX priests for consecrating bishops without papal approval.
Separately, in 2024, ten Clarisas nuns in Burgos were excommunicated after formally rejecting the Church and the pope through a published manifesto. Despite this, excommunicated Catholics remain Catholics and retain certain obligations, such as attending Mass, even while being barred from receiving the Eucharist.
The FSSPX, also known as the lefebvrians, is an ultraconservative fraternity based in Switzerland that has long been known for rejecting the Second Vatican Council.
The Church’s handling of schism has often involved both canonical penalties and efforts at pastoral reconciliation.
Everything an Excommunicated Schismatic Is Forbidden to Do
Once a person has been excommunicated for schism, the practical consequences become immediate and far-reaching.
They are forbidden from receiving the Eucharist or any other sacrament, including baptism and reconciliation.
Priests under excommunication cannot celebrate Mass or administer sacraments to others.
All liturgical roles, including reading, bringing offerings, or assisting at Divine Office, are banned.
Any ecclesiastical office held becomes legally null and void.
The person is effectively removed from the communion of the faithful, losing access to the Church’s spiritual benefits. This penalty is considered medicinal, not vindictive, meaning it is designed to invite repentance and a return to full communion rather than to punish for its own sake.
Schism itself is defined under Canon 751 as the refusal of submission to the supreme pontiff, and the excommunication that follows is triggered automatically upon commission of the offense under Canon 1364.
Reconciliation, however, remains possible, offering a path back into full communion. A key aspect of reconciliation is the restoration of sacramental participation through restored baptismal life, followed by ongoing integration into the community of faith.
The Path Back to Full Communion After Schism
Excommunication for schism does not permanently close the door to the Catholic Church. The Church maintains a structured process for return, distinguishing between clergy and laity. Priests face more formal requirements, while lay faithful follow a simpler path.
Returning to full communion generally involves:
- Writing personally to the Holy Father and requesting remission of censures
- Submitting a signed Professio fidei and *Formula adhaesionis*
- Accepting Vatican II teachings and recognizing the Novus Ordo Missae’s validity
- Ceasing attendance at schismatic celebrations and approaching a priest in full communion
The Dicastery for the Doctrine of the Faith reviews each case individually. For priests, a successful review results in a rescript authorizing reception by an Ordinary for a probationary period lasting between one and three years, after which incardination may proceed. Even at the level of entire Churches, history shows that excommunications can be formally removed, as when the mutual anathemas of 1054 were lifted on 7 December 1965 and consigned to ecclesiastical oblivion in a legally binding act. The biblical theme of God’s faithfulness to covenants underlines the Church’s commitment to reconciliation with the people of Israel.
