Severing a Joint Tenancy in Ontario: How It Works and When to Do It

Most married couples buy their home as joint tenants without fully thinking through what that means. Joint tenancy suits many families perfectly — but circumstances change. Retirement, a second marriage, blended families, or a falling-out with a co-owner can make it desirable to sever the joint tenancy so that each person's share passes through their own estate.

This article explains what severing a joint tenancy means in Ontario, how the process works under the land titles system, and when it might be the right move.

What Does "Severing" a Joint Tenancy Mean?

A joint tenancy has a defining feature: the right of survivorship. When one joint tenant dies, their interest passes automatically to the surviving co-owner — it does not go through the deceased's will or estate.

Severing the joint tenancy destroys that right of survivorship. After severance, the former joint tenants hold as tenants in common, each with a defined, separate share (by default, equal shares). On death, each owner's share passes through their will (or intestacy if there is none), rather than jumping automatically to the survivor.

Can One Owner Sever Without the Other's Consent?

Yes — and this surprises many people. Under Ontario law, any joint tenant can sever unilaterally. You do not need the other co-owner's agreement, and you do not need to notify them first (though certain steps effectively provide notice through the land registry system).

The unilateral right to sever is a long-standing common-law principle. It is designed to protect co-owners who want to direct their share of an asset to their estate rather than have it vest in a co-owner they may be estranged from.

How Severance Is Registered in Ontario

Ontario uses the Land Titles system for virtually all real property. Severance is accomplished by registering a transfer of the joint tenant's interest — typically a transfer from themselves to themselves. This breaks the unity of title that is required for joint tenancy to exist.

The steps typically involve:

1. Preparing a transfer document — a transfer of the severing owner's interest to themselves (sometimes called a "deed to oneself").
2. Registering on title — the transfer is registered on the property's parcel of tied land (POTL) or electronic register through the Teranet land registry system.
3. Updated title — after registration, the title reflects that the parties now hold as tenants in common. The other co-owner remains on title with an equal share.

A lawyer handles the registration; the process is relatively straightforward but must be done correctly to be effective.

What About Notification?

Because the registration is a public act through the land titles system, the other co-owner can discover the severance by searching title. Ontario does not have a statutory requirement to give formal prior written notice to the other joint tenant before registering a unilateral severance. However, consulting an estate lawyer about notification obligations in your specific circumstances is wise — particularly if there is ongoing litigation or a separation agreement in play.

When Does Severing Make Sense?

1. Estate Planning for Blended Families

If you are in a second marriage and want to ensure your share of the home eventually reaches your children from a prior relationship, joint tenancy is a problem. Severance lets you direct your share through your will to your chosen beneficiaries, rather than having it vest automatically in your current spouse.

2. Falling Out With a Co-Owner

Co-owners who are no longer on good terms — whether business partners, siblings, or separated spouses — may want their share under their own control. Severing ensures the property does not simply vest in a co-owner they may be in a dispute with.

3. Protecting Against Creditor Risk

A joint tenant's interest is generally not accessible to their creditors until death (at which point survivorship passes the asset entirely to the other owner anyway). Once severed and held as a tenancy in common, that share can potentially be reached by creditors. This is a reason to consider carefully before severing, not a reason to avoid it in all cases — the right answer depends on your full financial and estate picture.

4. Updating an Outdated Title

Sometimes property was registered as joint tenancy decades ago based on default practice, and the owners never revisited whether it still serves them. A title review as part of estate planning often surfaces this issue.

Effect on Wills and Estate Plans

Severance alone is not a complete estate plan. After severing:

• Update your will to address what happens to your newly defined share. If you die without a will, your share passes under Ontario's intestacy rules, which may not match your wishes.
• Review beneficiary designations on any life insurance or RRSP tied to the home's carrying costs — those are separate instruments.
• Consider a co-ownership agreement if you and the remaining co-owner want to formalize the terms of co-ownership going forward (buyout rights, cost sharing, what happens on sale).

Tax Considerations at Severance

Registering a transfer from yourself to yourself to sever a joint tenancy is generally not a disposition for income tax purposes where spouses are involved, but the rules can be nuanced depending on the parties involved and the nature of the property. Confirm the tax implications with your lawyer or accountant before proceeding.

Frequently asked questions