Family Law in Canada

Family law in Canada is split between two levels of government. The federal Divorce Act governs divorce, parenting orders, and spousal support for married couples. Provincial legislation covers property division, unmarried couples, and child protection. The rules differ significantly by province — what applies in Ontario may not apply in Alberta or Quebec.

How Federal and Provincial Family Law Divide Responsibility

The split matters because it determines which court you go to and which rules apply.

Quebec operates under the Civil Code of Quebec for family matters. Common-law partners in Quebec have no automatic property rights or support obligations under provincial law — a significant gap that does not exist in most other provinces.

Divorce in Canada: Grounds and Process

Canada has one ground for divorce: marriage breakdown. This is established in one of three ways:

• Separation for one year — the most common route; no fault required
• Adultery — the applicant must prove it; the other spouse's admission is not sufficient on its own
• Physical or mental cruelty — must be of a kind that makes continued cohabitation intolerable

You do not need to wait one year to start divorce proceedings. You can file immediately and the divorce order is granted once the year has passed. Most uncontested divorces in Canada are processed without a court appearance.

Residency requirement: At least one spouse must have been ordinarily resident in the province for at least one year before filing.

Joint divorce application: Since March 2021, the Divorce Act allows both spouses to file a joint application — useful when the divorce is uncontested and both parties agree on all issues.

Parenting After Separation: The 2021 Terminology Change

The 2021 amendments to the Divorce Act replaced "custody" and "access" with new terms. The old language still appears in provincial legislation and older court orders.

The terminology change does not alter the legal substance — courts still apply the same analysis. Provincial legislation (Ontario's Children's Law Reform Act, BC's Family Law Act) may still use "custody" and "access" for cases not involving divorce.

Best interests of the child is the only consideration courts apply when making parenting orders. Under s. 16 of the Divorce Act, the factors include:

• The child's physical, emotional, and psychological safety and well-being
• The nature and history of the child's relationship with each parent
• The child's views and preferences, weighted by age and maturity
• Each parent's willingness to support the child's relationship with the other parent
• Any family violence — courts must consider its impact on the child and the other parent

A history of family violence can result in supervised parenting time or restrictions on decision-making responsibility.

Parenting plan: A written agreement setting out parenting time schedules and decision-making arrangements. Courts prefer agreed plans over imposed orders. A parenting plan can be incorporated into a consent order, making it enforceable.

Child Support: How the Amount Is Calculated

Child support is not negotiable in the same way other financial matters are. The Federal Child Support Guidelines set a base monthly amount determined by two factors: the paying parent's gross annual income and the number of children.

Sample base amounts (Ontario, 2026):

These are base amounts only. Special or extraordinary expenses (s. 7 expenses) are shared separately, in proportion to each parent's income. These include:

• Licensed childcare costs
• Medical and dental expenses not covered by insurance
• Post-secondary education costs
• Extracurricular activities that are extraordinary given the family's circumstances

Shared parenting time: When a child spends at least 40% of time with each parent, the base amount may be adjusted — but it is not automatically reduced. Courts look at the actual costs each parent incurs.

Child support orders are enforced provincially. In Ontario, the Family Responsibility Office (FRO) automatically enforces support orders by garnishing wages, suspending driver's licences, and intercepting tax refunds. Enforcement is automatic unless both parties opt out in writing.

Spousal Support: Factors and Ranges

Unlike child support, spousal support has no fixed table. Courts consider the length of the relationship, each spouse's income, and the economic impact of the relationship — including career sacrifices made by one spouse.

The Spousal Support Advisory Guidelines (SSAG) provide ranges for amount and duration. They are not binding but are widely used by courts and lawyers.

Example — without dependent children:

A 20-year marriage where one spouse earned $120,000 and the other $30,000 might produce:

• Monthly support: $2,000–$3,000
• Duration: 10–20 years (or indefinite, given the length of the marriage)

Example — with dependent children:

When the recipient spouse has primary parenting responsibility, the "with child support" formula applies. The ranges are generally higher and duration is longer.

Entitlement is not automatic. A spouse must establish one of three bases for entitlement:

• Compensatory — to compensate for economic disadvantage caused by the relationship (e.g., leaving a career to raise children)
• Non-compensatory — to address economic need after a long relationship
• Contractual — based on a separation agreement or marriage contract

Property Division: Equalization, Not Equal Splitting

Property division rules are entirely provincial. Ontario does not divide assets equally — it equalizes the growth in each spouse's net worth during the marriage.

Ontario equalization of net family property (NFP):

Each spouse calculates their NFP: assets minus debts at separation, minus assets brought into the marriage. The spouse with the higher NFP pays the other half the difference. The matrimonial home is treated differently — its full value at separation is included in the paying spouse's NFP, with no deduction for its value at marriage.

Matrimonial home: Both spouses have equal rights to possession of the matrimonial home regardless of who holds title, until a court order or agreement says otherwise. In Ontario, the home cannot be sold or mortgaged without both spouses' written consent.

Common-law couples and property: In Ontario, unmarried partners have no automatic right to property division under the Family Law Act. A common-law partner who contributed to property owned by the other may have a claim based on unjust enrichment or constructive trust — but this requires litigation and is not guaranteed.

Separation Agreements: Requirements for Enforceability

A separation agreement is a contract between spouses that resolves all or some issues arising from separation. It does not require a court order to be valid.

For a separation agreement to be enforceable, it must meet these conditions:

• Both parties signed voluntarily, without duress or undue influence
• Both parties made full financial disclosure — income, assets, debts, and liabilities
• Both parties had independent legal advice (strongly recommended, though not strictly required)
• The terms are not unconscionable

A court can set aside a separation agreement if financial disclosure was incomplete or if one party was pressured into signing. In Ontario, the Family Law Act (s. 56) gives courts explicit authority to do this.

Separation agreements can address: property division, spousal support, parenting arrangements, and debt allocation. They cannot permanently waive child support — a parent can always return to court to vary child support based on changed circumstances.

Alternatives to Court: Mediation and Collaborative Law

Most family law disputes do not go to trial. The main alternatives:

Mediation: A neutral mediator helps both parties reach agreement. The mediator does not decide — they facilitate. Agreements reached in mediation are not binding until signed as a separation agreement. Mediation is typically faster and less expensive than litigation.

Collaborative family law: Both spouses and their lawyers sign a participation agreement committing to resolve issues without going to court. If the process breaks down, both lawyers must withdraw and the parties start over with new counsel. This creates a strong incentive to settle.

Arbitration: A private arbitrator (usually a retired judge or senior family lawyer) makes a binding decision. Faster than court but costs are borne by the parties. Arbitration awards can be appealed to court on limited grounds.

Parenting coordination: A newer role in high-conflict cases. A parenting coordinator helps parents implement their parenting plan and resolve day-to-day disputes without returning to court. Available in Ontario, BC, and Alberta.