Severing Joint Tenancy as an Estate-Planning Move in Ontario

Most people who own property jointly with someone else never think about what "right of survivorship" actually means until it's too late to change. If you own a home, cottage, or investment property as joint tenants, your share doesn't pass under your will when you die — it passes automatically to the surviving co-owner, no matter what your will says. For some families that's exactly the desired outcome. For others, especially blended families, it isn't, and severing joint tenancy is the deliberate estate-planning step that fixes it while everyone is still alive.

Understanding what severance actually does — and when people typically consider it — can help you decide whether your current ownership structure matches what you actually want to happen.

Joint Tenancy vs. Tenancy in Common: The Core Difference

Ontario recognizes two main ways for two or more people to co-own property:

• Joint tenancy — each owner holds an equal, undivided interest in the whole property, and carries a right of survivorship: when one owner dies, their interest doesn't pass to their estate at all. It simply merges into the surviving owner's interest, automatically.
• Tenancy in common — each owner holds a distinct, identifiable share (not necessarily equal), and there is no automatic survivorship. On death, that owner's share passes through their estate, under their will or under Ontario's intestacy rules if they have no will.

Severance is the legal act of converting a joint tenancy into a tenancy in common, without necessarily changing who owns the property or in what proportions.

Why Someone Would Deliberately Sever a Joint Tenancy

Blended families

If you've remarried and hold your home jointly with your new spouse, but you want your share to eventually go to children from a previous relationship rather than automatically to your spouse, survivorship works directly against that goal. Severance lets your share become something your will can actually direct.

A change in relationship or intentions

Co-owners — siblings who bought a cottage together, business partners who hold real estate jointly, or a couple going through separation — sometimes want to formally establish that each person's share is now their own to leave as they choose, rather than something that automatically flows to whoever survives.

Estate planning that depends on flexibility

Some estate plans are built around each owner's share being available to direct through a will — for example, funding a trust for a beneficiary with specific needs, or dividing an interest unevenly among children. None of that is possible while the asset remains a true joint tenancy.

How Severance Generally Happens

Ontario law recognizes a few long-established ways a joint tenancy can be severed, without needing the other owner's agreement in every case:

1. Acting unilaterally on your own interest — for example, transferring your own share out of joint names and into your own name alone, or into a trust, which is inconsistent with continuing as joint tenants.
2. Mutual agreement — all joint owners agree, typically in writing, to hold the property as tenants in common going forward.
3. A course of dealing — the owners' conduct, taken as a whole, shows they no longer intend to treat the property as a joint tenancy, even without a single formal document.

Because severance affects title to real property, it typically needs to be reflected in the land registry system to be effective and to put future dealings with the property on clear footing — this is a step to work through with a lawyer, not something to attempt informally on a jointly held home.

What Severance Does — and Doesn't — Change

Severance doesn't, by itself, change who's living in the property, how expenses are shared, or whether the property needs to be sold — those are separate questions the co-owners may still need to agree on.

Points Worth Discussing With a Lawyer First

• [ ] Whether severing affects a matrimonial home differently than other jointly held property, if you're married
• [ ] Whether the other joint owner needs to be told, and how that conversation might land
• [ ] How your will needs to be updated to actually direct your now-severable share
• [ ] Whether severance triggers any tax consequences worth planning around
• [ ] Whether a partial severance (some owners, not others, on a multi-owner property) is even possible for your specific situation

Frequently asked questions