Litigation Strategy reviewed by Deepa Tailor, Senior Family Lawyer. Updated January 2026 to reflect Succession Law Reform Act amendments.
The Grounds: In Ontario, you can only contest a Will for specific legal reasons: Lack of Capacity (Dementia), Undue Influence (Coercion), or Improper Execution (No witnesses).
Intestacy: If there is no Will, the Succession Law Reform Act dictates distribution. The married spouse gets the first $350,000 (Preferential Share); the rest is split with children.
The Cost: Estate litigation is expensive. The old rule that “The Estate Pays” is gone. Costs are in the court’s discretion (Courts of Justice Act, s. 131(1)), and a losing party may be ordered to pay costs personally.
Wills and estates litigation in Ontario: just the phrase is enough to make even the bravest family member break out in cold sweats—or at least reach for a strong cup of coffee. But fear not! If you’re facing this maze of rules, paperwork, and family drama, you’re not alone. At Tailor Law, we’ve guided countless families through the estate litigation process, answering every quirky question along the way.
The “Disruptor” Angle:
A Will is supposed to be the final word. But when a new Will suddenly appears, or assets go missing, you need to act fast. We move quickly to file a Notice of Objection so that no Certificate of Appointment is issued without notice to you (Rules of Civil Procedure, r. 75.03). If assets are at risk, a separate court order may be needed.
Whether you’re grappling with a mysterious will, an unexpected challenge, or just trying to understand your rights, this comprehensive FAQ will shine a light on Ontario’s estates law. We’ll break down the essentials and make sure you leave with practical insights you can actually use.
Let’s untangle the confusion around estate litigation, will challenges, and inheritance disputes in Ontario, step by step.
Not all disputes are created equal. Ontario law recognizes several valid grounds for challenging a will. You cannot challenge a will just because you’re angry or because “it’s not fair.” You need specific legal grounds backed by evidence.
The testator didn’t have mental capacity at the time (e.g., dementia, severe illness)
Someone pressured or coerced the testator into changing the will
The will was tampered with or signatures were faked
Failure to follow Ontario’s strict signing and witnessing rules
Personal feelings about fairness are not legal grounds
Personal dislike of the executor is insufficient
Entitlement without legal basis won’t succeed
Verbal promises without documentation are difficult to prove
For a will to be valid, the testator must have had the mental capacity to understand:
Medical evidence is critical. If the testator had dementia, was heavily medicated, or was in a confused state, you may have grounds to challenge. However, the bar is high—courts presume capacity unless proven otherwise.
Undue influence occurs when someone in a position of power or trust coerces the testator into making a will that doesn’t reflect their true wishes. Common scenarios include:
Proving undue influence requires evidence of suspicious circumstances, sudden changes to the will, and a pattern of control. Bank records, witness testimony, and correspondence can all be crucial.
Ontario law sets out strict formalities for executing a will:
If these formalities weren’t followed, the will may be invalid. However, courts have some discretion to uphold a will if the testator’s intentions are clear.
The Bottom Line: Challenging a will isn’t about airing grievances—it’s about ensuring the will reflects the true intentions of the deceased. Courts look for strong evidence. Hunches and suspicions won’t get you far; you’ll need facts, documents, and sometimes expert testimony.
If you suspect a will is invalid or unfair, you might be tempted to leap into legal action. Hold your horses! The process for contesting a will in Ontario is structured and must follow specific steps. Missing a deadline or filing incorrectly can be fatal to your case.
Not just anyone can waltz into court and challenge a will. Ontario law is clear: only certain people have the legal “standing” to contest a will. This usually includes:
If you’re named in the will and feel shortchanged, you may have grounds to challenge.
If you would have inherited under Ontario’s intestacy rules but were left out of the will.
If you were financially dependent on the deceased and haven’t been adequately provided for.
Courts prevent frivolous claims: If you’re a long-lost cousin who never met the deceased, your chances of success are slim. But if you’re a close family member or were promised something significant, you might have a case worth exploring.
Before you do anything, talk to a family and estates lawyer. They’ll review your situation, explain your options, and help you avoid costly mistakes. At Tailor Law, we assess the viability of your challenge before you burn through the estate’s value on an unwinnable case.
You’ll need documents—medical records, past wills, correspondence, bank statements, and anything else that supports your claim. Evidence is everything in estate litigation.
Critical Evidence Includes:
This is an official form you submit to the Ontario Superior Court of Justice. It notifies the court (and the estate) that you intend to contest the will. Critically, this prevents a Certificate of Appointment (Probate) from being issued without notice to you. It does not by itself freeze estate assets (Rules of Civil Procedure, r. 75.03).
Time is not on your side: Once assets are sold or distributed, they’re much harder to recover. We move quickly to file the Notice of Objection to preserve your rights.
If the parties can’t resolve things through negotiation or mediation, the matter proceeds to court, where each side presents their case. Estate litigation can be a marathon, not a sprint. But with a solid legal strategy and clear objectives, it is possible to reach a fair and lawful outcome.
In Ontario, you generally have two years from the date you became aware of the issue to bring a claim. Dependant support claims have a shorter limit: six months from the grant of probate or administration (Succession Law Reform Act, s. 61(1)), with court discretion for undistributed assets (s. 61(2)). However, delaying allows assets to be sold, distributed, or hidden. Missing a deadline can be fatal to your case.
Our advice: Act immediately. Even if you’re not sure whether you have a case, consult a lawyer early. We can assess your situation and preserve your options while the evidence is still fresh.
When someone passes away in Ontario without a will, it’s called dying “intestate.” While it sounds exotic, it’s actually a legal headache for everyone involved. The Ontario Succession Law Reform Act kicks in, dictating exactly how the estate is divided.
Common Law spouses do NOT inherit automatically if there is no Will. They must sue for Dependant’s Support under the SLRA.
This is a critical distinction that catches many people off guard. Without a will, common law partners have no automatic inheritance rights, regardless of how long the relationship lasted.
No will means no say in who gets what. The process can be slow and impersonal, which is why estate planning is so important. A will gives you control and can help prevent disputes among your loved ones.
Without a will, the courts will also appoint an estate trustee (administrator) to manage the process—often a family member, but not always the one you’d expect.
Estate distribution in Ontario depends on whether the deceased left a valid will. If there’s a will, the executor follows its instructions (after paying debts and taxes). If there’s no will, the rules of intestacy apply. Either way, the process is governed by Ontario law and overseen by the courts.
The will is validated by the court, and the executor is given authority to act.
The executor gathers all assets—bank accounts, property, investments.
Outstanding debts and taxes must be paid before anyone inherits.
What’s left is divided among the beneficiaries, as specified in the will or by law.
Disputes often arise if beneficiaries disagree on the value of assets, suspect mismanagement, or feel the executor isn’t acting fairly. The court can intervene if necessary, but most estates are settled without drama—provided the executor acts promptly and transparently.
If you’re an executor or beneficiary, it’s wise to consult a lawyer early to ensure you understand your rights and responsibilities. Mistakes can be costly, and ignorance of the law is rarely an excuse.
Not all estate litigation is about challenging the will itself. Sometimes, the problem is the executor—the person appointed to manage and distribute the estate. When executors act improperly, beneficiaries have legal remedies.
The executor refuses to provide updates or takes years to distribute assets without explanation.
The executor buys estate assets for themselves at below-market prices or uses estate funds for personal expenses.
Assets that should be in the estate have disappeared, and the executor can’t (or won’t) explain where they went.
The executor is also a beneficiary and is favoring themselves over other beneficiaries.
If you suspect an executor is mismanaging the estate, you can apply to the court for a “Passing of Accounts.” This forces the executor to provide a detailed accounting of all estate assets, income, expenses, and distributions.
The court will review the accounts and can order the executor to repay any funds that were improperly spent. If the executor can’t justify their actions, they may be personally liable for losses to the estate.
Pro Tip: Executors have a legal duty to keep accurate records. If they can’t produce receipts and documentation, that’s a major red flag.
In extreme cases, you can apply to the court to remove the executor and appoint a replacement. Grounds for removal include:
Removing an executor is a serious step, but sometimes it’s the only way to protect the estate and ensure fair distribution.
Let’s talk about the elephant in the room: cost. Wills and estates litigation can be expensive, both financially and emotionally. Fees include:
Lawyers typically charge by the hour, though some offer flat fees for specific services. Total costs depend on the complexity of the case.
Filing documents and attending hearings incur fees. These add up quickly over the course of litigation.
In some cases, you’ll need medical experts, handwriting analysts, or accountants. Expert report costs vary.
While not a line item on a bill, never underestimate the emotional toll of litigation on families.
The old rule that “the estate pays” is gone. In Ontario, the losing party may be ordered to pay some of the winner’s legal costs. This isn’t guaranteed: costs are in the court’s discretion (Courts of Justice Act, s. 131(1)).
This is a critical cost consideration before launching a will challenge. If you lose, you could be personally liable for tens of thousands of dollars in legal fees—on top of your own lawyer’s bill.
Litigation depletes the inheritance. At Tailor Law, we focus on Mediation first to preserve the asset pool. If that fails, we litigate strategically to remove the Executor or force a Passing of Accounts. But we always assess the cost-benefit before proceeding. Sometimes, walking away is the smartest financial decision.
A seasoned family and estates lawyer is your best ally when navigating Ontario’s estate litigation landscape. Here’s how we can help:
We explain your rights, outline your options, and help you avoid costly missteps. We assess viability before you burn through the estate’s value.
We assess your case, gather evidence, and develop a winning legal strategy tailored to your situation and budget.
Many disputes can be resolved without going to court. We’re skilled negotiators who seek fair settlements and minimize family conflict.
If negotiations fail, we represent you in court, advocating for your interests every step of the way with forensic precision.
The goal isn’t just to “win” the case, but to resolve disputes efficiently, preserve relationships when possible, and protect your loved one’s legacy. At Tailor Law, our team brings deep expertise, a client-focused approach, and a track record of success in Ontario estate disputes.
Get answers to the most common questions about wills and estate litigation in Ontario
Learn more about our Wills & Estates services or explore our comprehensive guide on Estate Litigation in Ontario.