March 24, 2026 | Successions

How to Contest a Will in Quebec

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How to Contest a Will in Quebec

Losing someone is hard enough. Discovering that their will may not reflect what they actually wanted can make an already painful situation feel overwhelming. If you believe a will is invalid, you are not powerless. Quebec law provides clear mechanisms to challenge a will, and understanding the legal grounds available to you is the first step.


Grounds for Contesting a Will in Québec

Under the Civil Code of Quebec (CCQ), a will can be challenged on several legal grounds. The most common is lack of testamentary capacity. Article 707 of the Civil Code establishes that a testator’s capacity is assessed at the moment the will was made. What matters legally is that the person understood what they were signing and could grasp the nature of a will, the extent of their property and who their natural heirs were. If they did not, the will may be void.

A second ground is formal defects. Quebec law recognizes three valid forms of will: the notarial will, the holograph will (handwritten and signed by the testator), and the will made before witnesses. Each form has strict requirements. For example, a holograph will that was typed can be challenged. A will that substantially meets the requirements of a given form may still be upheld but serious defects can render a will null (art. 714 CCQ). 

A third ground is undue influence or vitiated consent. If someone was pressured, manipulated, or coerced into making or changing their will, it would not reflect a free and genuine decision. 

Finally, fraud or forgery, including a falsified signature or a fabricated document, can also be grounds for contestation.


The “No-Contest” Clause

Under Article 758 of the Civil Code, any clause in a will that threatens to disinherit someone for challenging its validity has no legal effect. In other words, if you have legitimate concerns about a will, you cannot be penalized simply for raising them. Provision exists to protect the integrity of the succession process, and it means you should not let the fear of losing your inheritance stop you from seeking legal advice.


Who Can Contest a Will in Québec?

Only those with a legal interest in the succession have the right to challenge the will. Under Article 772 of the Civil Code, a will can be contested by any “interested person.” In practice, this includes (1) heirs at law such as those who would inherit if there were no will or if the will were annulled, (2) legatees named in the will or in a prior will, and (3) creditors of the succession who have a financial stake in how the estate is distributed.


Probate and the Verification Process

Before a holograph will or a will made before witnesses can be acted upon, it must go through a process known as probate where the court examines the will to confirm its authenticity (art. 772-775 CCQ). Known heirs and successors must be summoned and given an opportunity to appear. Notarial wills, on the other hand, are authentic documents by nature and do not require probate.

One critical rule to be aware of: if you have already acknowledged the validity of a will, like by signing a document accepting it, you cannot contest it afterward. You may still apply to have it probated, but you cannot argue it is invalid (art. 773 CCQ). This is why it is essential to get legal advice before taking any steps in the estate process if you have doubts.


The Burden of Proof

Before probate, the challenger bears the initial burden of raising sufficient grounds to justify a review. However, once a will has been probated, the burden of proof shifts. According to Article 773 of the Civil Code, the person relying on the probated will (typically the liquidator or a legatee) must prove its origin and regularity if it is contested.


Deadlines: Why Acting Fast Matters

The general prescription period for civil actions of three years applies to contesting wills. This means you have three years from the moment you knew or should have known of the grounds for contestation to file your claim (art. 2925 CCQ). If you do not act within this delay, you may not be able to challenge the will, regardless of how strong your case might be.


Speak with a Lawyer Before You Act

If you have concerns about the validity of a loved one’s will, the most important thing you can do is consult a lawyer before acting. Our team is here to help you understand your rights and offer a course of actions.