Termination of Marriage and the Possibility of Its Annulment Under Czech Law

Marital nullity is not the same as divorce. Divorce terminates a valid marriage that has broken down. Nullity addresses a defect that existed at the time the marriage was entered into, such as a prior marriage, a prohibited degree of kinship, coercion, or a mistake regarding the identity of the fiancé. A marriage is considered valid until a court declares it void; once declared void, it is considered never to have been entered into. A marriage of convenience is yet another situation: in that case, the marriage is never formed in the first place.

Invalidity, Divorce, Sham Marriage, and Annulment: What’s the Difference?

In everyday language, these terms are sometimes lumped together: divorce, annulment, dissolution of marriage, or invalidity. Legally, however, they refer to different situations.

• Divorce addresses a validly contracted marriage that is no longer working. As of January 1, 2026, the rules governing divorce have changed, notably in that the law introduces the concept of a consensual divorce, and in the case of a standard divorce, the causes of the breakdown are generally not investigated, unless grounds for rejecting the petition are asserted. However, this does not change the fact that divorce pertains to a valid marriage.
• The nullity of a marriage addresses a situation where a legal impediment or a defect in the intent to marry existed at the time the marriage was entered into. The marriage is nevertheless considered valid until a court rules otherwise. If a court declares the marriage null and void, it is considered never to have been entered into.
• A putative marriage is even more radical. It means that the marriage never came into existence because a fundamental requirement—whether regarding the expression of intent, the ceremony, or the procedure—was missing, and the law unconditionally requires that such a requirement be met. The court may determine that a marriage does not exist even without a petition.
• An ecclesiastical annulment is a concept from canon law. It is neither a civil divorce nor a decision by a state court. A church court may, within the scope of its authority, assess whether a marriage was validly contracted according to church rules. However, such a decision does not, in and of itself, change a person’s civil marital status in the Czech Republic.

When Can a Marriage Be Declared Null and Void?

A marriage may be declared invalid if it was entered into in spite of a legal impediment or due to a serious defect in the consent of one of the parties.

Legal impediments to marriage are set forth in the Civil Code. These include, for example, being a minor without full legal capacity, restricted legal capacity with respect to marriage, an existing marriage or registered partnership, prohibited consanguinity, and certain relationships based on guardianship, foster care, or the placement of a child in care.

Typical grounds for annulment:

• one of the fiancés was already in another ongoing marriage at the time of the wedding,
• one of the fiancés had previously entered into a registered partnership or a similar foreign union that is still in effect,
• the fiancés are an ancestor and a descendant or siblings,
• thekinship arose through adoption,
• one of the fiancés was not eligible to marry due to age or limited legal capacity,
• the marriage was entered into under duress involving the use of violence or threats of violence,
• the marriage was entered into in error regarding the identity of the fiancé or the nature of the legal act of marriage.

An exception applies in cases of minority: in exceptional cases, a court may authorize a minor who is not fully legally competent and has reached the age of 16 to enter into marriage, provided there are compelling reasons to do so. A special rule applies to coercion and mistake. A petition to declare a marriage void may be filed by the spouse whose consent was vitiated, no later than one year from the date on which, given the circumstances, they could have first done so, or from the date on which they learned of the true state of affairs.

Example: Shortly after the wedding,a woman discovers that the man she married was using someone else’s identity. This is not merely an unpleasant disappointment, but a potential legal ground for annulment of the marriage due to a mistake regarding the fiancé’s identity.

Invalid Marriage and Apparent Marriage

The difference between a void marriage and a marriage in appearance is fundamental.

• In the case of a void marriage, the marriage is presumed to have been entered into and is considered valid until a court rules it void. Only after a court ruling is it regarded as never having been entered into.
• In a marriage of convenience, the marriage was never formed in the first place. The Civil Code states that a marriage does not come into existence if, for at least one of the parties, the requirements that must be unconditionally met were not fulfilled in the expression of intent, during the marriage ceremony, or in connection with it.

A simple example of a sham marriage is a scene in a movie or play where people are merely acting out a wedding ceremony and have no genuine intention of entering into marriage. Another example might be a situation where the ceremony does not take place before a person or authority that is legally authorized to solemnize the marriage.

A sham marriage does not produce the legal effects of a marriage. However, if it is disputed whether a marriage was formed or not, a court may rule that no marriage exists.

In practice, this distinction is often important in matters such as property, children, inheritance, or social benefits. In the case of an invalid marriage, the law explicitly addresses how to handle the rights and obligations regarding a child of the marriage and property relations after the marriage is declared invalid. In the case of a marriage in name only, on the other hand, the law addresses situations where the marriage was never legally established.

How Marriage Annulment Proceedings Work

You cannot have a marriage annulled at the registry office or by simply notifying the other spouse. The court decides on the matter.The Civil Code stipulates that if a marriage was entered into despite a legal impediment, the court will declare it void upon a petition by any person with a legal interest in the matter, with the exception of an impediment based on limited legal capacity.

In some of the most serious cases, the court may declare a marriage void even without a petition, even if the marriage has already been dissolved. This applies in particular to bigamy and prohibited consanguinity between an ancestor and a descendant, between siblings, or between persons related by adoption.

Proceedings for the annulment of a marriage fall under matrimonial status matters. The Act on Special Judicial Proceedings classifies proceedings in matrimonial matters to include, among others, proceedings to determine whether a marriage exists or not, proceedings for the annulment of a marriage, and divorce proceedings; the court decides the merits of the case by judgment.

The petition must clearly describe why the marriage should be declared invalid and include supporting evidence. This may include, for example, proof of a prior ongoing marriage, a decision restricting legal capacity, civil registry documents, medical reports, witness statements, or correspondence proving coercion.

Real-life example: Kateřina and Milan got married after a brief courtship. After the wedding, Kateřina discovered that Milan had previously been married abroad. He claimed that the divorce had been finalized, but it turned out that, under Czech law, the previous marriage had not been dissolved or recognized in a way that would remove the impediment to marriage. If the previous marriage was still in effect, this constituted a fundamental impediment, and the court could declare the subsequent marriage null and void.

In practice, the first step is always to determine whether the issue is actually one of nullity or rather a divorce. Not every post-wedding shock, concealed debt, or act of infidelity means the marriage is null and void. Nullity is tied to specific legal grounds.

Church Annulment of Marriage: Why It Is Not the Same as a Civil Divorce

People often use the term “marriage annulment” to describe a situation where they want the marriage to be regarded as if it had never taken place. In Czech civil law, however, the term “marriage nullity”is used. Annulment is primarily a concept of ecclesiastical law.

A church court does not deal with the same issues as a state court. In the Catholic understanding, it is not a matter of divorcing a valid marriage, but of examining whether the marriage was validly contracted under church law. The ecclesiastical court in Brno states that a civil divorce concerns causes that arose during the marriage, whereas the Church may declare a marriage invalid on grounds that already existed at the time of its conclusion. The grounds for ecclesiastical nullity may differ from those for civil nullity. These may include, for example, a serious defect in consent, mental incapacity to assume essential marital obligations, fraud, coercion, or the absence of a fundamental element of marriage.

However, under Czech law, civil status is decisive. A declaration of marriage nullity by a church court has no effect on the secular status of the marriage. In other words, a church annulment does not in itself mean that you are divorced from the perspective of the Czech state or that the civil marriage has ceased to exist.

Therefore, if spouses wish to end their civil marriage, they must file for divorce in a state court. If they claim that the marriage was void from the outset under the Civil Code, they must seek a declaration of the marriage’s nullity in a state court. Church proceedings may be of fundamental spiritual and personal importance to believers, but they do not replace a civil ruling.

Legal Consequences of Declaring a Marriage Null and Void

The annulment of a marriage has retroactive effect, but the law also protects children, property relations, and good faith.

The basic rule is: a marriage is considered valid until it is declared invalid. If it is declared invalid, it is considered never to have been entered into.

However, this does not mean that all practical consequences of living together are automatically nullified. The Civil Code stipulates that the provisions governing divorced spouses apply mutatis mutandis to the rights and obligations of a man and a woman whose marriage has been declared invalid with respect to their child, as well as to their property rights and obligations following the declaration of invalidity. Thus, children are not legally disadvantaged by the “annulment of marriage.” Parental responsibility, custody, child support, and other issues are resolved in a manner similar to that for divorced parents.

With regard to property, it depends on the specific situation. The court will have to assess what was acquired during the period of cohabitation, which property regime applies, and whether either spouse acted in good faith. In cases of nullity caused by a defect of consent—such as coercion or mistake—the Civil Code expressly provides that, when deciding on property rights, consideration must be given to which spouse acted in good faith.

Invalidity may also affect inheritance rights, social benefits, or survivor’s benefits. This is precisely why it is not advisable to file a petition without carefully considering all the consequences. What at first glance appears to be a “simpler alternative to divorce” can, in practice, have complex financial and family implications.

Summary

Marital nullity is an exceptional legal concept. It applies when a defect existed at the time the marriage was entered into—for example, a prior marriage that was still in effect, a prohibited degree of kinship, lack of legal capacity, coercion, or a mistake regarding the identity of the fiancé.

Annulment is not the same as divorce. Divorce terminates a valid marriage that has broken down. Annulment retroactively challenges the validity of the marriage. A marriage de jure is yet another situation: the marriage is never formed in the first place.

A church annulment has significance under canon law, but does not in itself change a person’s civil marital status in the Czech Republic. For the state, the decisive factor is a civil court’s decision or the relevant entry in the civil registry.

If a court declares a marriage invalid, this does not mean that the children will be left without legal protection or that the spouses’ entire life together will automatically be disregarded. Rights and obligations regarding a child of the marriage, as well as property issues, are handled in a manner similar to that following a divorce.