TREADSTONE LAW · ONTARIO · DIGITAL LEGAL SERVICES · EST. MMXXI ·TSL
Licensed by the Law Society of OntarioFlat fees published upfrontWe reply to messages within 1 business daySign in
Home/Articles/Alberta/Wills & Estates
№ 22 Wills & Estates

Can a Grant of Probate Be Set Aside After It Is Issued in Alberta?

Learn how Alberta's Surrogate Rules let an interested person ask the Court for formal proof of a will or to set aside a grant, and what the Court can order.

Wills & Estates5 min readTSLBy the Treadstone Law Team · AlbertaUpdated November 13, 2026
← All articles
Key takeaways
  • A personal representative or a person interested in the estate can apply for formal proof of a will or to set aside a Part 1 (non-contentious) grant.
  • Filing the application stays the Part 1 process, and distribution is restricted unless the Court approves or all interested persons consent.
  • Separate 6-month deadlines that run from the grant can apply to related claims, so acting promptly matters.

Many people learn that a grant of probate has been issued only after it is done. You may have had no notice, or you may doubt that the will is the deceased's real and valid will. It is natural to wonder whether the grant can be undone.

In Alberta, the Surrogate Rules provide a process for this. This article explains who can apply, what happens to the estate while the application is pending, how the hearing works, and what the Court can order. It does not cover the legal tests for capacity or undue influence, which depend on the facts and are best discussed with a lawyer.

This article covers the law of Alberta.

The application: formal proof or setting aside a Part 1 grant

A personal representative or a person interested in the estate may apply to the Court for formal proof of a will, also called proof in solemn form. The same rule allows an application to set aside a Part 1 (non-contentious) grant, to prevent a grant from issuing, to declare intestacy, or to restrain a personal representative.

The Surrogate Rules treat formal proof and other estate disputes as contentious matters, and a contentious matter can be brought under Part 2 by filing Form C1 with an affidavit in Form C2. The Court can also require formal proof of a will on its own motion for a Part 1 application, and it must give reasons.

If the original will is lost or destroyed, an interested person must generally apply under r 75, unless s 40 of the Alberta Evidence Act applies or the Court orders otherwise.

Who counts as an interested person

For a formal-proof application, persons interested in the estate include the following:

The Public Trustee or trustees stand in for minors and represented adults. If you are unsure whether you fit, a lawyer can confirm, because your position may depend on your relationship to the deceased and on what the will says.

What happens to the estate while the application is pending

Filing a formal-proof application stays a Part 1 application. While it is pending, a personal representative under a Part 1 grant may not distribute estate property unless the Court approves or all interested persons consent.

If you only want to stop a grant from issuing, a caveat is a separate tool. It is filed in Form C3 and generally lasts 3 months unless it is discharged, withdrawn, or the Court orders otherwise.

The hearing and what the Court can order

Formal proof hearings are generally a trial, though they may be in chambers if only death or signing formalities are in issue. The person who took instructions for the will can be compelled as a witness. That person may be questioned on the testator's instructions, the preparation and signing of the will, and the steps taken to assess capacity.

On the application, the Court may decide the following:

A grant issued after such a decision binds all persons, absent fraud, and an appeal lies to the Court of Appeal. Where a Part 1 grant is revoked or terminated, the personal representative must return the grant to the Court unless it orders otherwise, and the clerk endorses the grant accordingly.

Costs risk and deadlines

In Surrogate proceedings the Court may order costs to be paid from the estate or by a party to the application. A successful party is generally entitled to a costs award against the unsuccessful party. On formal proof, the Court may penalize a person who required formal proof if the application was frivolous or vexatious, caused undue delay, or had no substantial basis. The Court may also order security for costs in contentious proceedings.

Several related claims have their own time limits, and they run from the grant:

ClaimTime limit
Rectification of a willNot more than 6 months after the grant, unless the Court extends the period
Gift to a witness (Court order under s 40)Not more than 6 months after the grant, unless the Court extends the period
Family maintenance and supportWithin 6 months after the grant, though the Court may allow an application respecting any undistributed part of the estate

What to do next

Frequently asked questions

Who can apply to set aside a grant of probate in Alberta?

A personal representative or a person interested in the estate can apply under r 75. Interested persons include a surviving spouse or partner, adult children, heirs on intestacy, and beneficiaries under the will or a prior grant.

Does the estate stop being distributed once I apply?

Filing a formal-proof application stays a Part 1 application. While it is pending, a personal representative under a Part 1 grant may not distribute estate property unless the Court approves or all interested persons consent.

Is the hearing a trial?

Formal proof hearings are generally a trial, though they may be in chambers if only death or signing formalities are in issue. The person who took the will instructions can be compelled as a witness.

Could I pay costs if I lose?

Yes, it is possible. The Court may order costs to be paid by a party or from the estate, and it may penalize a person who required formal proof where the application had no substantial basis.

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. Alberta 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 Alberta. Reach us at 1-844-900-1070 or send our Team a message.

This is a wills & estates question

A single will with us is from $628.95, tax included. Third-party fees are extra.

ContactStart a File →