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№ 22 Wills & Estates

How to Contest a Will in New Brunswick: Steps and Court Process

Learn which court hears a will challenge in New Brunswick, what a caveat does, the court fees and the short deadlines that can apply to related claims.

Wills & Estates5 min readTSLBy the Treadstone Law Team · New BrunswickUpdated November 1, 2026
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Key takeaways
  • Will disputes over validity are dealt with in the Probate Court, which can grant, recall or revoke letters probate.
  • A caveat lodged against a grant stays in force six months unless withdrawn, vacated or a notice of intent to contest is filed.
  • Separate claims for support or a share of marital property can have a four-month deadline running from the death, not from probate.

If you believe a parent's will is not valid, the first questions are practical ones. Which court is involved, what do you file first, and how much time do you have?

This article walks through the general process in New Brunswick. Every situation is different, and the detailed court filing steps depend on the facts, so treat this as a map and not a substitute for advice.

This article covers the law of New Brunswick.

Which court hears the dispute

The Probate Court of New Brunswick can grant letters probate, recall or revoke them, and supervise the administration and distribution of estates. It is distinct from the Court of King's Bench but is presided over by a King's Bench judge.

In a contested will, the Probate Court may make interested persons parties to proof of a will in solemn form or to revocation proceedings. Claims for support out of an estate are different. Under the Provision for Dependants Act, a Court of King's Bench judge decides them. So a single family dispute can involve both courts, depending on what you are asking for.

Lodging a caveat before a grant issues

If no grant has been issued yet, a caveat against a grant may be lodged with the Registrar or a probate office clerk. Once it is in place, no proceedings may be taken on the application without notice to the caveator.

Because of that ten-day window, do not leave a warning sitting in the mail pile. Take it to a lawyer the day it arrives.

Contested claims and proof in solemn form

Where a will is challenged, the matter can proceed as a contested claim or as proof of the will in solemn form, which costs $50 to institute. A party served with a citation who does not file a notice of intent to contest is not entitled to notice of further proceedings.

If letters have already been issued, an interested person can apply for a citation requiring the holder to bring the letters into the probate office. Once that citation issues, the holder must not start or continue distribution without leave of the Court. Probate procedure is set out in the Probate Rules under the Probate Court Act, and the Court publishes forms and a checklist. A search into court proceedings costs $10.

The Probate Court follows common law principles where the legislation does not provide otherwise. What you must prove depends on the ground you rely on, which is covered in our article on valid grounds to challenge a will.

Related claims with short deadlines

Sometimes the better route is not to attack the will at all. A dependant, meaning a spouse, a child or another person who was a dependant under the Family Law Act, can ask a King's Bench judge for maintenance and support out of the estate, even against a will. No application may be made later than four months after the death, though a judge may allow a later application for any part of the estate still undistributed if just.

A surviving married spouse may apply to have marital property divided in equal shares as against the estate, within four months of death, extendable if the spouse did not know of the death or was prevented by circumstances beyond their control. This is available to married spouses only. A common-law partner may qualify as a dependant if they cohabited continuously for at least three years with one substantially dependent on the other, or cohabited with some permanence and have a child together. Whether a particular partner qualifies depends on the facts.

ClaimDeadline
Support under the Provision for Dependants ActFour months after death, with a possible later application for undistributed estate
Marital property division by a surviving spouseFour months after death, extendable in limited cases
Caveat against a grantIn force six months unless withdrawn, vacated or a notice of intent to contest is filed

These four-month periods run from the death, not from the grant of probate, so they can be running while the executor is still preparing the application.

What to do next

Frequently asked questions

Is a will contested in the Probate Court or the Court of King's Bench?

Disputes about proving or revoking a will are dealt with by the Probate Court. Claims for support out of an estate under the Provision for Dependants Act go to a Court of King's Bench judge.

Can I lodge a caveat against a grant?

If no grant has been issued yet, a caveat may be lodged with the Registrar or a probate office clerk. It stays in force six months unless withdrawn, vacated or a notice of intent to contest is filed. Whether it suits your situation depends on the facts, so it is worth confirming with a lawyer.

Does waiting for probate stop the clock on my claim?

No. The four-month limit for a Provision for Dependants Act application and for a married spouse's marital property claim runs from the death, not from probate. A judge may allow a later dependants application for any part of the estate still undistributed if just.

Can I stop the executor from distributing the estate?

After a citation to bring in the letters issues, the holder must not start or continue distribution without leave of the Court. Whether that step suits your situation is something a lawyer can confirm.

Sources

Links go to official government, court and regulator pages. The law changes — confirm you are reading the current version.

This article is general information, not legal advice. Reading it does not create a lawyer-client relationship. New Brunswick laws, tax rates, and government programs change, and how the law applies depends on your specific facts. For advice about your situation, speak with a lawyer who practises in New Brunswick. Reach us at 1-844-900-1070 or send our Team a message.

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