What Happens to Your Power of Attorney After Separation or Divorce in Ontario?

Many Ontarians name a spouse as their attorney for property and personal care when they first sign a power of attorney — it's often the most natural choice at the time. But relationships end, and a power of attorney after divorce doesn't necessarily update itself the way people assume it does.

If you've separated or divorced and haven't touched your power of attorney documents since, it's worth understanding exactly what is — and isn't — still in effect.

The Rule for Wills Doesn't Automatically Apply to Powers of Attorney

Ontario law does build in an automatic protection for wills: divorce revokes any gift or appointment made to a former spouse under an earlier will, and the will is then read as though the former spouse had died before you. Many people assume something similar happens with a power of attorney.

It generally doesn't. Ontario's power of attorney legislation does not contain an equivalent rule that automatically cancels a spouse's appointment as attorney the moment a divorce is finalized. A power of attorney naming an ex-spouse can remain legally valid and in effect unless and until you formally revoke or replace it — even well after the marriage has ended.

Separation Cuts Only One Way

If you're separated but not yet divorced, the two documents behave differently. A will is not necessarily untouched: Ontario's rules can, in defined circumstances, treat a separated spouse much the way they treat a divorced one, so don't assume your will still reads as written — that is a fact-specific question worth putting to a lawyer. A power of attorney is different: separation triggers no automatic change at all. A former spouse you're separated from — potentially in the middle of a contested split — could, on paper, remain fully authorized to make decisions about your property or personal care if you became incapable during that period.

Why This Creates a Real Gap

The practical risk isn't hypothetical. If you become incapable while an outdated power of attorney is still in effect, the named attorney's authority doesn't pause itself for a pending or even finalized divorce. Someone would need to know to challenge it, and doing so after the fact is far harder than simply updating the document in advance.

Situations where this gap matters most

1. You separated recently and haven't yet finalized anything with a lawyer.
2. Your divorce is final, but you never revisited your estate planning documents afterward.
3. You have children and want a family member — not your former spouse — making personal care decisions if you're incapacitated.
4. Your former spouse also still appears as your attorney for personal care, not just property.

How to Actually Update It

Fixing this is usually straightforward, but it does require action — it will not happen on its own.

1. Formally revoke the existing power of attorney naming your former spouse, in writing, following the proper formalities.
2. Execute a new Continuing Power of Attorney for Property and, separately, a new Power of Attorney for Personal Care, naming whoever you now want.
3. Notify anyone who may rely on the old document — banks, care facilities, family members — that it has been revoked, so an outdated copy isn't accidentally used.
4. Review your will and overall estate plan at the same time, since the same relationship change often affects who you'd want inheriting or acting as your estate trustee.

Frequently asked questions