Comment les tribunaux de l'Ontario traitent les cas d'héritages inégaux entre enfants

Ontario courts do not divide an estate equally among children simply because an unequal distribution seems unfair. Under Ontario law, testators have the freedom to distribute their assets as they see fit, meaning adult, independent children have no automatic statutory right to inherit equal shares or any property at all. Unless a child qualifies as a statutory dependant under the Succession Law Reform Act, R.S.O. 1990, c. S.26 (SLRA) or successfully proves grounds such as lack of testamentary capacity or undue influence, Ontario courts will uphold the terms of a valid will leaving unequal inheritances among children. At Société d'avocats Pax, we review estate disputes under prevailing provincial legislation and binding appellate jurisprudence.

The Core Rule: No Inherent Entitlement for Adult Independent Children

The principle governing testamentary dispositions in Ontario is testamentary freedom. In the leading decision Spence v BMO Trust Company, 2016 ONCA 196 [Spence], the Court of Appeal for Ontario established the boundaries of judicial intervention regarding testamentary gifts. The court stated that:

“…no one, including the spouse or children of a testator, is entitled to receive anything under a testator’s will, subject to legislation that imposes obligations on the testator.” (Spence au paragraphe 32)

The Court of Appeal further observed that there is “no statutory duty” to provide for an adult, independent child (Spence at para 37). When parents choose to leave disparate amounts to their offspring—or entirely disinherit an adult child—the court cannot step in to rewrite the document purely out of perceived unfairness. To alter or override the distribution set out in a will, an applicant must fall squarely within statutory exceptions or establish valid legal grounds for invalidation.

Legal Framework: Comparing Legal Grounds in Inheritance Disputes

When family members face unequal inheritances among children, disputes generally proceed through one of three pathways: statutory dependant support, formal will challenges based on capacity or coercion, or public policy limits. The court applies distinct evidentiary standards to each category.

When a Court May Order Support Under the SLRA

The primary statutory restriction on testamentary freedom in Ontario is Part V of the Loi portant réforme du droit des successions. A child can obtain an order altering the estate’s distribution only if they meet the strict legal definition of a “dependant.”

Under section 57(1) of the SLRA, a dependant includes a child of the deceased to whom the deceased “was providing support or was under a legal obligation to provide support immediately before his or her death.” Section 58(1) outlines the authority granted to the court:

“Where a deceased, whether testate or intestate, has not made adequate provision for the proper support of his dependants or any of them, the court, on application, may order that such provision as it considers adequate be made out of the estate of the deceased for the proper support of the dependants or any of them.” (SLRA, s. 58(1))

Assessment Criteria: Need, Legal Duty, and Moral Obligations

When evaluating a claim by an eligible dependant, the court does not limit its inquiry to strict physical necessity. In Cummings v Cummings (2004) ONCA [Cummings] at paragraph 27, the Court of Appeal confirmed that the court considers the claims of all dependants “whether based on need or on legal or moral and ethical obligations.”

However, this judicial assessment must not be misconstrued:

• The remedy is adequate support: The court’s jurisdiction under the SLRA is limited to ordering adequate provision for support, not enforcing parity among beneficiaries.
• No entitlement to an equal share: An adult child who was independent and neither supported nor legally entitled to support immediately before the parent’s death cannot utilize the SLRA merely to secure a larger inheritance or equal distribution (Spence au paragraphe 37).

When a Will May Be Challenged: Testamentary Capacity and Undue Influence

A disinherited or less-favoured child may initiate estate litigation to dispute the formal validity of the testamentary instrument itself. The most common grounds are testamentary incapacity and undue influence. However, uneven gifts do not shift the evidentiary burden onto the estate to justify the split.

Capacité testamentaire

Comme indiqué dans Slover v Rellinger, 2019 ONSC 6497 [Slover] at paragraph 287, testamentary capacity requires that the testator understood:

1. The nature of the testamentary act and its consequences;
2. The extent and nature of the property being disposed of; and
3. The claims to which effect should be given.

A testator who possesses capacity retains the right to favour one child over another or leave their assets to non-relatives.

Influence indue

Alleging coercion or manipulation requires satisfying a rigorous evidentiary threshold. To establish undue influence, the challenger must prove influence “so great and overpowering that the document reflects the will of the former and not of the deceased” (Slover aux paragraphes 377 et 381).

The practical application of these rules was demonstrated in Slover:

• The court upheld a will that allocated 75% of the estate to one child and 25% to the other, determining that this uneven distribution represented “a free and independent expression of her will and intention” (Slover aux paragraphes 9 et 393).
• The court subsequently set aside later estate-planning instruments because they were tainted by undue influence, not because the original 75/25 split was unequal (Slover aux paragraphes 9 et 432).

Narrow Public-Policy Limits on Wills

Litigants occasionally argue that testamentary dispositions that discriminate among family members offend general public policy. However, this exception is remarkably narrow in Ontario. In Spence, the Court of Appeal confirmed that an unconditional testamentary gift is not rendered invalid simply because it was alleged to be motivated by discriminatory reasons (Spence aux paragraphes 55 et 75).

Court intervention on public-policy grounds is confined to situations where a testamentary condition explicitly requires a beneficiary to engage in conduct that violates the law or runs contrary to public policy. An absolute bequest resulting in unequal inheritances among children remains legally binding even if the underlying personal rationale is viewed unfavourably.

Statutory Limitation Periods for Filing Support Claims

Beneficiaries or dependants wishing to contest provisions under the SLRA must adhere strictly to statutory deadlines. Missing a limitation window can permanently extinguish support entitlements.

• Date limite standard : Under section 61(1) of the SLRA, an application for dependant support under section 58 must generally be brought within six mois after probate or letters of administration have been issued.
• Candidatures tardives : Under section 61(2) of the SLRA, the court retains discretion to grant permission for a late claim, but this relief can apply only to estate property that remains undistributed at the time the late application is heard.

Estate representatives and beneficiaries dealing with will interpretations, dependant support issues, or estate disputes can consult the legal team at Société d'avocats Pax to assess rights, responsibilities, and procedural deadlines under Ontario law.

Questions fréquemment posées