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Find a Lawyer » Canada Legal Guides » New Brunswick Legal Guides » Wills & Estate Planning New Brunswick » Probate & Trust Administration New Brunswick » How to Challenge the Validity of a Will During the Probate Process in New Brunswick

How to Challenge the Validity of a Will During the Probate Process in New Brunswick

23 May 2026 4 min read No comments Probate & Trust Administration New Brunswick
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If you suspect a will is forged or was signed under pressure, you can challenge its validity in New Brunswick. You must file a Notice of Objection at the Probate Court immediately, which halts the estate administration until a judge decides if the document is legally binding.

Discovering that an elderly parent suddenly changed their will just weeks before their death is a heartbreaking and suspicious experience. Sometimes, opportunistic caregivers or estranged relatives manipulate vulnerable individuals into leaving them the entire estate. If you believe a will does not reflect the true intentions of the deceased, you have the right to fight back. 💔

In New Brunswick, challenging a will is a serious form of estate litigation. The Probate Court (a division of the Court of King’s Bench) presides over these disputes. Whether you are dealing with a family farm in Miramichi or a complex estate in Moncton, courts require hard evidence-not just hurt feelings-to throw out a signed legal document. You must act quickly before the estate assets are distributed and disappear forever.

Step-by-Step Process in New Brunswick

Contesting a will is highly procedural. You cannot simply write a letter to the judge; you must follow the strict rules of the Probate Court to halt the process and present your evidence. 📍

Step 1: Understand the Legal Grounds for a Challenge

You cannot challenge a will just because it is unfair. You must prove one of specific legal grounds. The most common are a lack of “testamentary capacity” (the deceased had severe dementia and did not understand what they were signing), “undue influence” (someone bullied or coerced them into signing it), improper execution (it was not signed in front of two witnesses), or outright fraud/forgery.

Step 2: File a Notice of Objection (Caveat)

Time is of the essence. You must intervene before the executor receives their Letters Probate. ⚖ Your estate litigation lawyer will file a formal Notice of Objection (historically known as a caveat) with the Probate Court. This immediately freezes the probate process. The court will not grant the executor the power to touch bank accounts or sell houses until the dispute is fully resolved.

Step 3: Gather Evidence and Proceed to Trial

Once the objection is filed, the litigation begins. Your lawyer will request medical records to prove dementia or mental decline. They will subpoena the lawyer who drafted the suspicious will to ask them about the deceased’s state of mind. Finally, both sides will present their evidence at a trial before a judge at the Court of King’s Bench, who will rule on whether the will is valid or void.

How Much Does it Cost in New Brunswick?

Estate litigation is one of the most expensive areas of civil law because it requires extensive medical evidence and trial time. 💰

  • Court Filing Fees: Filing a Notice of Objection at the New Brunswick Probate Court generally costs under $100 CAD, but it sparks a larger legal battle.
  • Lawyer Retainers: Hiring a law firm for a full will challenge usually requires an upfront retainer of $10,000 to $25,000 CAD. Total legal fees for a trial can easily exceed $50,000 CAD.
  • Expert Witnesses: If you are arguing a lack of mental capacity, your lawyer will likely need to hire a geriatric psychiatrist to review the medical records, which can cost $3,000 to $7,000 CAD.

How Long Does the Process Take?

Challenging a will guarantees that the estate will be frozen for a long time while the court reviews the evidence. ⌚

Phase of LitigationEstimated Timeline
Filing the Notice of ObjectionImmediate (must be done before Probate is granted)
Gathering Medical & Financial Records6 to 12 months
Final Trial and Judge’s Decision1 to 3 years, depending on court backlog

Frequently Asked Questions (FAQ)

Who is legally allowed to challenge a will?

Only individuals with a direct financial interest in the estate can launch a challenge. This usually means spouses, children, or anyone who was named as a beneficiary in a previous, older version of the will.

What happens if the judge declares the will invalid?

If the suspicious will is thrown out, the court will look for the deceased’s next most recent valid will and use that one instead. If no older will exists, the person is declared to have died “intestate,” and the estate is divided according to New Brunswick’s strict Devolution of Estates Act.

What exactly is undue influence?

Undue influence is more than just nagging or persuading. It means someone applied so much pressure, coercion, or emotional abuse that the deceased person had their own free will destroyed, forcing them to sign a document they did not truly want to sign.

Will the estate pay for my lawyer if I challenge the will?

Unlike the executor, who usually has their fees paid by the estate, a person challenging a will must generally pay their own legal fees upfront. If you win the case, the judge may order that your legal costs be reimbursed from the estate, but this is never guaranteed.

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