Can I Write My Own Will in Ontario? What You Need to Know

The short answer is yes — you can write your own will in Ontario. Ontario law does not require you to use a lawyer.

But “can” and “should” are different questions. A will that is technically permitted but poorly prepared can still fail to do what you intended, create disputes among your family, delay the administration of your estate, or cost your beneficiaries far more in time and legal fees than a professionally prepared will ever would.

This article explains what Ontario law actually requires, what a handwritten will is and when it may be valid, the most common mistakes people make when writing their own will, and how to know whether your situation calls for professional guidance.

What Does Ontario Law Actually Require for a Valid Will?

Under the Succession Law Reform Act, a formal valid will in Ontario must meet three core requirements:

1. It must be in writing. A will cannot be made verbally. It must exist as a written document.
2. The person making the will must sign it at the end. The person making the will — called the testator — must sign the document at the very end. If the testator is physically unable to sign, they may direct someone else to sign on their behalf, in their presence and by their direction.
3. Two witnesses must sign in the testator’s presence. Both witnesses must be present at the same time when the testator signs, and both must sign the will in the testator’s presence immediately after. Critically, a witness — or the spouse of a witness — cannot be a beneficiary under the will. If a beneficiary witnesses the will, the will itself may remain valid, but that beneficiary’s gift could be voided.

Who can make a will in Ontario?

Generally, a person must be at least 18 years old and mentally capable — meaning they understand the nature of a will, the extent of their property, who their natural beneficiaries are, and how the document disposes of that property. Ontario law provides limited exceptions for those under 18 who are married or have been married, and for members of the armed forces or sailors.

What Is a Holograph Will in Ontario?

Ontario is one of the provinces that recognizes holograph wills — wills that are entirely handwritten and signed by the testator, without the need for witnesses.

For a holograph will to be valid in Ontario, it must be:

• Written entirely in the testator’s own handwriting (not typed, not partially printed)
• Signed by the testator

No witnesses are required. No notarization is required.

A holograph will can be written on any piece of paper. It does not need to follow a specific format. However, it must clearly express the person’s wishes regarding the distribution of their property after death.

Is a handwritten will legal in Ontario? Yes — provided it meets the requirements above. But several important caveats apply.

A holograph will that is unclear, incomplete, or that contradicts other documents can still cause significant problems during estate administration. Courts have been asked to interpret holograph wills whose language was ambiguous, and the results are not always what the person intended. The absence of witnesses also means there is no one who can attest to the testator’s mental capacity or the circumstances under which the will was signed — which can make a holograph will more vulnerable to challenge.

Are Online Will Kits and DIY Will Templates a Good Idea?

Online will kits and template-based DIY wills have become increasingly popular. They are inexpensive, accessible, and feel straightforward. For some people in genuinely simple circumstances, they may serve the purpose.

But there are real limitations:

Templates cannot account for your specific situation. A standardized form does not know whether you have children from a previous relationship, co-own property, have a family member with a disability who receives government benefits, or have strong opinions about who should be excluded. These situations require specific, carefully drafted language — not a fill-in-the-blank approach.

A small drafting error can have large consequences. Wills are interpreted very literally. Ambiguous language, missing clauses, or incorrect execution can invalidate a gift — or in some cases, the entire document.

Execution requirements are easy to get wrong. Even if the will says the right things, it must be signed and witnessed correctly. Many DIY wills are found to be improperly witnessed — and by then, the person who made the will is no longer alive to correct the problem.

Common Mistakes People Make When Writing Their Own Will

These are the errors that estate lawyers see most frequently in self-prepared wills:

• Naming a witness as a beneficiary — voiding that person’s gift or creating a legal dispute
• Failing to appoint an alternate executor — leaving no one to act if the primary executor cannot or will not
• Using unclear or contradictory language about who receives what
• Forgetting to address residue — what happens to everything not specifically mentioned
• Not updating the will after major life events — marriage, divorce, the birth of a child, or the death of a beneficiary
• Failing to address digital assets — online accounts, cryptocurrency, and digital property
• Not naming a guardian for minor children
• Assuming jointly held assets or beneficiary designations align with the will — they may not

When a DIY Will Becomes Especially Risky

A self-prepared will carries more risk when your situation involves any of the following:

You have children from more than one relationship. Blended families create competing claims and require careful, specific drafting to ensure your wishes are carried out without triggering a dispute.

You own real estate. Property transfers on death are governed by strict legal requirements. If the will does not address the property clearly, or if co-ownership arrangements conflict with your intentions, the results can be unpredictable.

You want to leave something to a person with a disability. An outright gift to someone who receives means-tested government benefits may disqualify them from those benefits. This requires a specific type of trust — a Henson Trust — that a standard template will not include.

You want to exclude someone who might otherwise expect to inherit. Ontario’s Succession Law Reform Act gives certain dependants the right to claim support from an estate regardless of what the will says. Trying to exclude a dependent spouse, child, or parent requires careful legal advice.

You own a business or have significant assets. Business interests, partnerships, and complex investments require specific provisions that general-purpose templates are not designed to handle.

You have concerns about capacity challenges. If there is any possibility someone may later challenge whether you had the mental capacity to make a will, having a lawyer document the process provides important protection.

Before You Write Your Own Will — Ask Yourself

Work through this checklist honestly before deciding whether a DIY will is appropriate for your situation:

• Is my estate simple — one spouse, no children from other relationships, no complex assets?
• Do I have children? If so, have I clearly named a guardian?
• Do I own real estate, either alone or with others?
• Do I have a blended family or dependants who might make a claim on my estate?
• Do I want to make specific gifts to specific people, and is my wording clear enough that there could be no misunderstanding?
• Have I chosen an executor — and an alternate in case they cannot act?
• Do I have any beneficiaries who receive government disability benefits?
• Have I updated this document after every major life event?
• Am I confident both witnesses understand they cannot benefit from the will?
• Have I addressed what happens to everything not specifically mentioned?

If you answered “not sure” or “no” to more than one of these, professional guidance is worth considering.

Simple vs. More Complex Estate Situations

Situations where a DIY will may be lower risk:

• Single person with no children, straightforward assets, and a clear intended beneficiary
• A couple with no children from other relationships and a simple wish to leave everything to each other, then to a named person

Situations where a lawyer-prepared will makes a significant difference:

• Blended families with children from previous relationships
• Owners of real estate, especially jointly owned or investment property
• Business owners or partners
• Anyone with a beneficiary who has a disability
• Anyone wishing to set up a trust for a minor child
• Anyone with international assets or complex investments
• Anyone who has recently separated, divorced, or remarried

It is also worth remembering that if you die without a valid will in Ontario, your estate is distributed according to a fixed formula under Ontario law — not according to your wishes. A spouse, children, and other relatives receive specific shares determined by statute, regardless of your relationships or intentions.

Why DIY Wills Often Create Problems — Even When Intentions Are Clear

One of the most common misconceptions about estate planning is that a will just needs to express your intentions clearly enough for people to understand what you wanted.

In reality, wills are interpreted by courts, financial institutions, and estate trustees applying specific legal rules. A sentence that seems perfectly clear to you may be ambiguous under those rules. A gift that seems straightforward may conflict with how property is held, or with beneficiary designations on registered accounts.

The problems created by a flawed will often surface at the worst possible moment — when your family is grieving, when no one can ask you what you meant, and when a court application to interpret or rectify the will can cost thousands of dollars and months of delay.

The cost of having a will professionally prepared is modest relative to the potential cost of correcting one that does not work as intended. Our Wills & Estate Planning team at Estate Law Ottawa prepares wills that are drafted to reflect your specific circumstances, clearly worded, and correctly executed.

When Does It Make Sense to Speak With a Lawyer?

If any of the following apply to you, a consultation with an estate planning lawyer is a worthwhile step:

• You own real estate or significant assets
• You have children, especially minors or children from a prior relationship
• You want to set up a trust
• You are not sure whether your intended beneficiaries could challenge your will
• Your family situation is anything other than straightforward
• You have not reviewed your will after a major life event such as marriage, divorce, or the birth of a child
• You want confidence that your will is legally valid and will work as intended

A lawyer does not just draft words on a page. They ensure the document reflects your intentions, meets Ontario’s legal requirements, is executed correctly, and works alongside your other planning — including beneficiary designations, powers of attorney, and jointly held assets.

Frequently Asked Questions

Is a handwritten will legal in Ontario?

Yes. Ontario recognizes holograph wills — wills that are entirely handwritten and signed by the person making the will. No witnesses are required for a holograph will. However, a holograph will must be entirely in the testator’s own handwriting, not partially typed or filled in on a printed form. It must also clearly express the person’s testamentary wishes. Even a valid holograph will can cause problems during estate administration if its language is ambiguous or incomplete.

Do I need a lawyer to make a will in Ontario?

No. Ontario law does not require you to use a lawyer to prepare a will. You can write your own will by hand (a holograph will) or prepare a typed will with two witnesses. However, a lawyer can help ensure your will meets all legal requirements, reflects your specific circumstances, and is unlikely to be challenged or misinterpreted after your death.

What makes a will invalid in Ontario?

A formal will may be invalid if it is not signed by the testator at the end, if it is not witnessed by two qualifying witnesses who were both present at the same time, or if the witnesses or their spouses are beneficiaries. A holograph will may be invalid if any part of it is not in the testator’s own handwriting, or if it is unsigned. A will may also be challenged if the testator lacked mental capacity at the time it was made, or if it was made under undue influence.

What happens if I die without a will in Ontario?

If you die without a valid will in Ontario — known as dying intestate — your estate is distributed according to a fixed formula under the Succession Law Reform Act. A spouse and children receive defined shares regardless of your personal wishes. If you have no close relatives, your estate may ultimately pass to the provincial government. The probate process can also be more complex and time-consuming when there is no will.

Can I update my will myself after it has been made?

Changes to a will should be made by preparing a new will or a formal codicil — a separate document that amends a specific provision. You cannot simply cross something out or write in a change on an existing typed will, as this may invalidate the affected portion or create ambiguity. A holograph will can technically be updated by hand if the entire change is handwritten and signed, but this carries risks. The safest approach is to have a new will prepared when your circumstances change.

Can a will be challenged in Ontario?

Yes. A will can be challenged on several grounds, including lack of testamentary capacity, undue influence, improper execution, or fraud. Wills that are prepared without legal guidance — particularly those with unclear language, unusual circumstances, or recently changed provisions — are more vulnerable to challenge. Certain dependants also have the right to apply to the court for support from the estate regardless of what the will says, under Ontario’s dependant support provisions.

Putting It Together

Writing your own will in Ontario is legally permitted. In the simplest possible circumstances, a carefully prepared holograph will or a properly executed typed will may serve its purpose.

But most people’s lives are not that simple — and the consequences of a flawed will fall not on the person who wrote it, but on the people they were trying to protect.

If you would like to make sure your will is not just written but legally sound and tailored to your situation, our Wills & Estate Planning team at Estate Law Ottawa can help. Contact us to book a consultation — we’ll take the time to understand your circumstances before any documents are prepared.

This article is provided for general informational purposes only and does not constitute legal advice. Ontario wills and estate law is complex and individual circumstances vary widely. The information above reflects Ontario law as of June 2026 and is subject to change. Reading this article does not create a lawyer-client relationship with J. Solomon Law Professional Corporation. If you are considering making a will or reviewing an existing one, please consult a qualified Ontario estate lawyer before making any decisions.