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Wills & Estates

How can a will be revoked or cancelled in Ontario?

TSL Written by the Treadstone Law team· Updated June 2026

In Ontario, there are several ways a will can be revoked under the Succession Law Reform Act. The most common method is by making a new valid will that contains a revocation clause — standard drafting practice is to include a statement revoking all previous wills. A new valid will revokes the old one even without an explicit revocation clause if the two cannot be read together consistently.

A will can also be revoked by a deliberate act of destruction — burning, tearing, or otherwise destroying it with the clear intention of revoking it. The act must be intentional; accidentally destroying a will does not revoke it.

Marriage used to revoke a will automatically as well, unless it was made in contemplation of that marriage — but that rule was repealed effective January 1, 2022. Marrying no longer revokes an existing will in Ontario.

A will cannot be partially revoked by marking through provisions unless the alteration meets the requirements for a valid codicil. Simply crossing out clauses or writing changes in the margins does not create a valid alteration and may invalidate surrounding provisions.

If you want to change your will, the cleanest approach is to make an entirely new one with a proper revocation clause, rather than amending the existing document.

Key takeaways

  • A new will with a revocation clause cancels prior wills.
  • Deliberate physical destruction of the will revokes it.
  • Marriage no longer revokes a prior will in Ontario — that rule was repealed effective January 1, 2022.
  • Do not mark up an existing will — make a fresh one with a clear revocation clause.
This is general information, not legal advice. It doesn’t create a lawyer–client relationship, and the rules can change. For advice on your situation, a Treadstone wills & estates lawyer can help.
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