How a Will Challenge Affects the Probate Timeline in Ontario

Families dealing with a loved one's estate often expect probate to be a fairly routine administrative step: submit the paperwork, wait, receive the certificate, move on. That expectation collapses the moment someone files a formal objection. A will challenge doesn't just add an extra step to the probate timeline; it can pause the entire process and reshape it into something closer to a lawsuit.

If you're an executor waiting to be appointed, or a beneficiary wondering why nothing seems to be moving, here's what actually happens once a challenge enters the picture.

The Normal Probate Timeline, Briefly

In an uncontested case, an executor applies to the court for a Certificate of Appointment of Estate Trustee, and the province has stated that complete, straightforward applications are typically processed within about 15 business days. As of mid-2026, that figure is a general government-stated benchmark, not a guarantee — actual timelines vary by court location and current caseload, and it's worth verifying the current expectation before relying on it for planning purposes.

That baseline assumes nobody objects. A will challenge changes that assumption entirely.

What Happens the Moment a Challenge Is Filed

When someone with a genuine interest in the estate believes the will shouldn't be admitted to probate — because of a capacity concern, undue influence, fraud, or a defect in how it was signed — they can file a formal objection with the court. Once a valid objection is on file, the court registrar generally won't issue a Certificate of Appointment while it remains outstanding. The routine administrative process effectively stops and waits for the dispute to be resolved.

Steps in a Contested Probate Process

1. A notice of objection is filed, putting the estate on formal notice that the will's validity is being disputed.
2. The person seeking to have the will admitted, often the named executor, may need to formally prove the will, addressing the objector's specific concerns rather than simply relying on the document appearing valid on its face.
3. Both sides exchange relevant records — the drafting lawyer's file, medical or capacity records where relevant, and other documentation bearing on the dispute.
4. The parties often attempt mediation before proceeding further, since estate disputes are frequently resolved this way at lower cost and with less family damage than a full trial.
5. If unresolved, the matter proceeds toward a hearing, where a judge decides based on the evidence presented, in a process governed under Rule 75 of Ontario's Rules of Civil Procedure.

Why These Cases Take Longer Than People Expect

A contested probate case runs on a fundamentally different track than an ordinary application tied to a stated processing time. It involves gathering and reviewing records, sometimes years of medical or financial history, coordinating multiple parties and their lawyers, and working within general court scheduling availability, all of which introduce real, often unpredictable delay. There's no reliable "typical" length to point to, because so much depends on how complex the estate is, how many parties are involved, and how contested the underlying facts are.

What Beneficiaries and Executors Can Do in the Meantime

Estate assets don't necessarily sit frozen and unmanaged for the entire dispute. In appropriate cases, the court can appoint someone, sometimes called an estate trustee during litigation, to manage and preserve estate assets on an interim basis while the challenge is worked out, so bills get paid, property is maintained, and nothing deteriorates simply because no one has final authority yet. Beneficiaries and named executors can ask their lawyer whether this kind of interim arrangement fits their situation.

Frequently asked questions