Declaration of nullity

In the Catholic Church, a declaration of nullity, commonly called an annulment and less commonly a decree of nullity, is a judgment on the part of an ecclesiastical tribunal determining that a marriage was invalidly contracted or, less frequently, a judgment determining that ordination was invalidly conferred.

A matrimonial nullity trial, governed by the church's canon law, is a judicial process whereby a canonical tribunal determines whether the marriage was void at its inception (ab initio). A "Declaration of Nullity" is not the dissolution of an existing marriage (as is a dispensation from a marriage ratum sed non consummatum and an "annulment" in civil law), but rather a determination that consent was never validly exchanged due to a failure to meet the requirements to enter validly into matrimony and thus a marriage never existed.

The Catholic Church teaches that, in a true marriage, one man and one woman become "one flesh" before the eyes of God. Various impediments can render a person unable to validly contract a marriage. Besides impediments, marriage consent can be rendered null due to invalidating factors such as simulation or deceit, or to psychological incapacity.

For this reason (or for other reasons that render the marriage null and void) the Church, after an examination of the situation by the competent ecclesiastical tribunal, can declare the nullity of a marriage, i.e., that the marriage never existed. In this case the contracting parties are free to marry, provided the natural obligations of a previous union are discharged.

In 2015, the process for declaring matrimonial nullity was amended by the matrimonial nullity trial reforms of Pope Francis, the broadest reforms to matrimonial nullity law in 300 years. Prior to the reforms, a declaration of nullity could only be effective if it had been so declared by two tribunals at different levels of jurisdiction. If the lower courts (First and Second Instance) were not in agreement, the case went automatically to the Roman Rota for final decision one way or another.

Certain conditions are necessary for the marriage contract to be valid in canon law. Lack of any of these conditions makes a marriage invalid and constitutes legal grounds for a declaration of nullity. Accordingly, apart from the question of diriment impediments dealt with below, there is a fourfold classification of contractual defects: defect of form, defect of contract, defect of willingness, defect of capacity. For annulment, proof is required of the existence of one of these defects, since canon law presumes all marriages are valid until proven otherwise.

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