Bill 245 Accelerating Access to Justice Act, 2021, came into effect January 1, 2022 making a number of changes to the Succession Law Reform Act (SLRA). Under the new rules, marriage occurring on or after January 1, 2022 does not revoke an existing Will in Ontario and a Will made before marriage will continue to be valid. Previously in Ontario, if you made a Will prior to being married, it would be revoked (or invalidated) upon marriage.
A divorce has a different effect on your Will. If you get a divorce, your Will is not cancelled. Instead, only the provisions in your Will that refer to your spouse are revoked. This means that your former spouse will no longer be your executor, trustee or guardian, and any gifts you left to your former spouse will go to someone else. Who the gifts will now go to will depend on the structure of your Will.
As of January 1, 2022, spouses that have been separated but not divorced for at least 3 years, or have a valid separation agreement or court order, are treated the same as divorced spouses.
This means that a separated spouse who has been designated as an estate trustee or a beneficiary in a Will is not entitled to the benefits under the Will. Previously, in this situation, unless the spouses had a separation agreement with specific provisions for property rights, the ex-spouse could apply for part of the estate under family law.
Because it can get confusing, you should consult a lawyer and consider making a new Will when you get divorced, or become separated.