
Regret is not a legal ground for annulment. Understand the strict legal difference between ending a valid marriage (Divorce) and declaring a marriage never existed (Annulment).
Book A ConsultationLegal Review: The criteria for 'Decree of Nullity' in this guide are based on the Marriage Act and Common Law precedents, reviewed by Deepa Tailor, Senior Family Lawyer.
Likely NO. A short duration (e.g., married for 2 weeks) is not a legal ground for annulment in Ontario. Annulment is reserved for marriages that were legally flawed from the start (Void or Voidable).
If you had a valid ceremony and consented to the marriage, but simply realized it was a mistake, you must file for a Divorce.
Annulment is strictly for specific scenarios like Non-Consummation (inability to have sex), Bigamy (already married), or Duress (forced marriage).
You must prove one of these specific legal defects exists.
If a spouse has a physical or psychological inability to consummate the marriage (have sexual intercourse), it can be annulled. Refusal to have sex is usually not enough; it must be an inability.
If one spouse was already legally married to someone else at the time of the wedding, the second marriage is automatically void.
If you were forced into the marriage under threat of violence, or if there was identity fraud (you married the wrong person), consent was never given.
You cannot marry close relatives (e.g., brother, sister, parent). These marriages are illegal and void from the start.
The Court and the Church are separate.
This is a court order ('Decree of Nullity') stating the marriage never existed in the eyes of the government. This is required if you want to remarry and avoid the legal obligations of a valid marriage (though support can still be claimed).
The Catholic Church (and others) may grant a religious annulment to allow you to remarry in the church. However, this has zero legal standing.
You can be annulled in the church but still legally married in Ontario. You almost always need a Civil Divorce first.
We must prove the marriage is either 'Void' (illegal from the start) or 'Voidable' (valid until challenged).
We file an Application for Annulment instead of Divorce. This is more complex because we must prove specific facts (like medical proof of non-consummation).
Unlike a simple divorce, an annulment often requires a hearing where a judge reviews the evidence to ensure it meets the high threshold for nullity.
If successful, the court declares the marriage null and void retroactively.
No strict deadline, but delay hurts your case. If you discover your spouse is impotent but stay married for 5 years, the court may say you 'accepted' the marriage and deny the annulment.
Surprisingly, yes. Even if the marriage is annulled, the Family Law Act allows a 'spouse' (someone who went through a form of marriage in good faith) to claim support if they are in financial need.
Rarely. Because you have to prove specific facts (like lack of consent or medical issues), it often takes longer and costs more than a simple uncontested divorce.

Senior Family Lawyer
Deepa Tailor advises clients on the precise legal requirements for annulment, saving them from pursuing costly applications that are unlikely to succeed.
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