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DIY Will Kits vs a Lawyer-Built Online Will in Ontario

Where generic will kits go wrong in Ontario, how an online will on a law firm’s own templates with safety checks addresses those risks, and when to see a lawyer instead.

Wills & Estates8 min readTSLBy the Treadstone Law Team · OntarioUpdated October 17, 2026
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Key takeaways
  • Generic kits fail in the same few ways: signing and witnessing errors, no back-up beneficiaries, gaps that leave part of an estate to the intestacy rules, and forms written for another country.
  • An online will built on a firm’s own Ontario templates, with checks and a signing guide, is designed to catch those errors before you sign.
  • Safety checks are not legal advice. They cannot tell whether your plan fits your family.
  • See a lawyer for complex estates, business interests, blended families, Henson trusts and foreign property.

A blank template can cost almost nothing. A few clicks and your will is done, or so the sales page says. If you have put off estate planning because lawyers feel expensive or intimidating, the appeal of an online will is easy to understand.

But not all online wills are alike. A generic fill-in-the-blank kit and a will built on a law firm’s own Ontario templates are very different tools. This article explains where generic kits go wrong under Ontario law, how a firm-built online will is designed to deal with those problems, and when you should speak to a lawyer instead.

Where Generic Will Kits Go Wrong in Ontario

A generic kit is a template sold in a stationery store, downloaded as a PDF, or completed through a web app, with little or no Ontario-specific help. A careful person with uncomplicated assets can sometimes use one successfully. The problem is that most people do not know what “careful” requires under the Succession Law Reform Act, and the kit rarely tells them. These are the failures we see most.

Wrong signing or witnessing

In most cases a will must be signed by the testator in front of two witnesses present together, who then sign in the testator’s presence. A will with only one witness may be invalid. A will witnessed by a beneficiary, or by a beneficiary’s spouse, generally stays valid, but the gift to that person can be void, so the person you meant to provide for may receive nothing. See who can witness a will.

No back-up beneficiaries

What happens if a beneficiary dies before you? Without an alternate named, that gift may lapse and fall into the residue, or into intestacy if there is no residue clause. See what happens if a beneficiary dies before you.

A missing or weak residue clause, and partial intestacy

The “residue” is everything left over after specific gifts. If the will does not deal with it, or shares do not add up, part of the estate can pass under Ontario’s intestacy rules to people you never chose. See the residue clause explained and partial intestacy.

Unclear beneficiary names

“My daughter Sarah” is clear until there are two Sarahs, or until Sarah changes her name. Courts read a will by what it says, not what you meant.

No guardian for children under 18

A will is one of the few places you can say who should raise your children if both parents die. Courts are not bound by it, but they give it serious weight. See naming a guardian.

Forms written for another country

Many free and cheap forms online come from the United States or England. Terms such as “personal representative,” a witness-and-notary signing ceremony or probate steps from another place do not match Ontario’s estate trustee and Certificate of Appointment process, and can leave your will confusing or invalid here.

Assets that never pass through the will

RRSPs, RRIFs, TFSAs, life insurance and jointly owned property generally pass outside your estate to a named beneficiary or surviving co-owner. A will that says “my RRSP goes to my son” may not decide who gets it. See when a beneficiary designation conflicts with your will.

Out-of-date wills

A will made before a marriage, a divorce, a new child or a business can reflect a family picture that no longer exists. Ontario repealed the rule that a marriage automatically revokes an earlier will effective January 1, 2022, but the repeal is not retroactive.

Why a Flawed Will Can Be Worse Than No Will

A defective will can complicate administration more than dying without one, because it creates a dispute. A court may need to decide whether the document is valid, what it means and whether an earlier will was revoked, and the cost comes out of the estate your family was meant to inherit. If there is no valid will at all, the Succession Law Reform Act sets who inherits. A surviving spouse receives a preferential share, with the remainder split between the spouse and children as the statute says. A common-law partner is not treated as a spouse under those provisions. Intestacy rules cannot reflect what you actually want, protect a vulnerable beneficiary with a trust or reduce tax and probate costs. See dying without a will in Ontario.

How a Lawyer-Built Online Will Addresses These Problems

The firm’s Online Will plan is a self-directed online process on the firm’s own Ontario templates. It includes a Will, a Power of Attorney for Property and a Power of Attorney for Personal Care, and matching wills for couples. It is built around the failures above:

These features reduce the common errors. They do not remove every risk. The checks test whether a document is internally consistent and correctly signed. They cannot judge whether the plan fits your family, your tax position or your assets. That judgment is advice, and the plan is a self-directed tool, not a lawyer’s review of your circumstances.

When to See a Lawyer Instead

An online will works best when your wishes are simple: assets to a spouse or partner, then to children or other chosen people, with a guardian and back-ups. Talk to a lawyer first if you have any of the following:

If your situation is unclear, start a file with the firm and we can tell you which route fits.

Why Wills Lawyers Still Matter

A properly drafted will costs far less than the legal fees to fix a defective one, or the cost of estate litigation. Whichever route you take, finish the job: sign it correctly, store the original safely (see where to store your will) and review it after major life events (see when to update your will). For couples, read matching wills for couples. For the powers of attorney side, read DIY power of attorney kits vs lawyer-built powers of attorney.

Frequently asked questions

Can an online will kit be valid in Ontario?

Yes. A will from a kit can be valid if it meets Ontario’s formal requirements: proper signing, correct witnessing, clear language and a plan that matches your assets. The risk is that most people do not realize when a requirement has not been met, because the document looks finished even when it is not.

What is the difference between a generic kit and an online will on a firm’s own templates?

A generic kit is a general-purpose form. An online will on a law firm’s own Ontario templates is written for Ontario law and adds checks and a signing guide designed to prevent common errors. Neither replaces legal advice for a complex situation.

What happens to my house if my will is invalid?

Real property you own alone passes through your estate. If the will is invalid, the house is distributed under Ontario’s intestacy rules, which may mean it goes to people you did not intend, in proportions you did not choose, after a potentially lengthy administration.

Does getting married cancel my will in Ontario?

Not anymore. Ontario repealed the rule that a marriage automatically revoked an earlier will, effective January 1, 2022. The change is not retroactive, so if you married before that date and had a will made before the marriage, the old rule could still have revoked it. Either way, review your will after a wedding.

When should I use a lawyer instead of an online will?

Consider a lawyer for a complex estate, business interests, a blended family or second marriage, a Henson trust, property outside Ontario, or any situation where you expect a dispute.

Sources

Links go to the official consolidated text. Legislation 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. Ontario 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 licensed Ontario lawyer. Treadstone Law is licensed by the Law Society of Ontario — reach us at 1-844-900-1070 or start a file online.

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