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Elderly hands signing a will document in Canada

Believe a Will Is Unfair or Invalid? You Can Challenge It Through Canadian Courts

Canadian law allows you to contest a will on grounds of incapacity, undue influence, or improper execution — and dependants can claim adequate support even if excluded from the will.

⚖️Surrogate Court · Probate Caveat📋All provinces covered🔎Undue influence · Capacity · Variation

On what grounds can you challenge a will in Canada?

The main grounds are: lack of testamentary capacity (the deceased did not understand what they were signing), undue influence (someone pressured them), improper execution (the will was not signed or witnessed correctly), and fraud or forgery. You must have standing — typically as a beneficiary, dependant, or heir under intestacy.

What is a caveat and how do you file one?

A caveat is a formal notice filed with the provincial surrogate or probate court that prevents a grant of probate from being issued until your objection is heard. You file a caveat application at the courthouse in the province where the deceased was domiciled. Most provinces have a standard caveat form with a nominal filing fee.

What is the deadline to challenge a will in Canada?

Limitation periods vary by province. In Ontario, you generally have two years from discovering the grounds. In British Columbia, a wills variation claim must be filed within 180 days of the grant of probate. Always check your province's Limitation Act and Wills, Estates and Succession Act for specific deadlines.

What is a wills variation claim in British Columbia?

Under BC's Wills, Estates and Succession Act, a spouse or child of the deceased can apply to the court to vary a will that does not make adequate provision for them. The court can rewrite the distribution even if the will is otherwise valid. This is a unique BC remedy not available in most other provinces.

Elderly person reading a will document in Canada

What happens if there is no will (intestacy) in Canada?

If someone dies without a valid will, provincial intestacy legislation determines who inherits. In most provinces, assets pass first to a spouse, then to children in equal shares. If you believe you are an intestate heir, you can apply for a grant of administration at the surrogate court.

Can a dependant claim against an estate even if they are not in the will?

Yes. Every province has dependants' relief legislation allowing a spouse, child, or other dependant who was not adequately provided for to apply to the court for support from the estate. In Ontario this is governed by the Succession Law Reform Act; in Alberta by the Wills and Succession Act.

How long does a will challenge take in Canada?

Uncontested caveats may be resolved in weeks. Contested will challenges can take one to three years if they proceed to trial. Many are settled through mediation. Courts generally encourage parties to resolve estate disputes out of court to preserve family relationships and avoid depleting the estate through legal costs.

Family reviewing estate documents at a table in Canada

Do you need a lawyer to challenge a will in Canada?

You are not required to have a lawyer, but will challenges are complex litigation. Self-represented litigants can file a caveat or a notice of objection, attend case conferences, and present evidence. An AI legal assistant can help you understand the process, prepare your initial documents, and identify what evidence you need.

What evidence do you need to prove undue influence over a will-maker?

Evidence can include medical records showing cognitive decline, witness statements about the deceased's relationship with the influencing party, communications showing isolation or control, and financial records showing unusual gifts before death. Courts look at whether the deceased had the freedom to make an independent decision.

What is the difference between challenging a will and challenging the executor?

Challenging a will disputes its validity. Challenging an executor (a passing of accounts application or an application to remove the executor) addresses how the estate is being administered. Both applications are filed in the surrogate or estate court, but they involve different legal tests and remedies.

Probate court filing documents in a Canadian courthouse

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