How Does Adultery Affect Divorce in Ontario?
Adultery is a recognized ground for divorce in Ontario, though its influence on the process is limited.
Divorce in Canada operates under the federal Divorce Act, R.S.C. 1985, c. 3, which follows a no-fault model. A court does not weigh who caused the marriage to end when it decides spousal support, property division, or parenting arrangements.
Adultery still carries weight in rare cases, such as when a spouse spent significant family money on the affair or when the child’s safety was affected.
Is adultery a ground for divorce in Ontario?
Yes. Adultery is one of the three legal grounds for divorce under section 8 of the Divorce Act. The other two are a 1-year separation and mental or physical cruelty.
Adultery carries one practical advantage as a ground. The innocent spouse can file for divorce right away, without waiting the standard 1 year of separation. A few conditions apply:
- The spouse making the claim must prove the adultery happened
- The spouse who cheated cannot use their own affair as the ground
- An admission from the cheating spouse can be enough, but a court does not have to accept it
Does adultery affect spousal support in Ontario?
No. Spousal support in Ontario rests on financial factors, not on who caused the marriage to end. A court looks at each spouse’s income, needs, and economic circumstances, along with the roles each played during the marriage.
Does adultery affect property division in Ontario?
Mostly no. Ontario divides property through equalization of net family property, which follows a fixed formula under the Family Law Act, R.S.O. 1990, c. F.3. Each spouse’s conduct during the marriage does not change the calculation. Property division depends on:
- Value of each spouse’s assets on the date of separation
- Value each spouse brought into the marriage
- Any debts and liabilities held by each spouse
Does adultery affect parenting time and decision-making responsibility in Ontario?
Generally no. A court decides parenting time and decision-making responsibility based on the best interests of the child, not on the conduct of either parent. An affair on its own says nothing about a person’s ability to raise their child.
The exception arises when the affair directly affects the child. A court may take notice in situations such as:
- New partner has a history of violence or abuse
- Affair exposed the child to an unsafe or unstable living environment
- Parent neglected the child to spend time on the affair
When does adultery matter in a divorce in Ontario?
Adultery affects a divorce in 2 narrow situations:
- Filing without the wait: Proving adultery lets the innocent spouse file for divorce right away, instead of waiting the standard 1 year of separation.
- Family money spent on the affair: Equalization splits the property each spouse owns on the date of separation. If a spouse drained marital money on the affair before that date, less property remains to divide, and the other spouse loses half of what was spent. Section 5(6) of the Family Law Act lets a court order an unequal split to correct this, but only when the spending counts as reckless depletion.
Trusted divorce lawyer in Etobicoke
Adultery changes less about a divorce than most people expect, but the facts of your case still shape the outcome. At Noori Law, we help clients across Etobicoke and the GTA understand their options, protect their entitlements, and move through the divorce process with confidence.
