The one-year separation rule for divorce in Ontario
Last updated: June 16, 2026
You must be separated for one full year before an Ontario divorce can be granted under the federal Divorce Act. The clock starts the day you and your spouse begin to live separate and apart — not the day you file the application, and not the day you sign a separation agreement. You can file the divorce application before the year is up, but the court will not finalize the order until the full year has elapsed. The other two grounds (adultery, cruelty) avoid the wait but rarely fit, and almost always cost more in the end.
The rule comes from section 8(2)(a) of the Divorce Act. Ontario family courts apply it strictly: even an otherwise clean uncontested file gets held until the year is satisfied (Department of Justice, About divorce in Canada).
When this does apply
The one-year rule applies to nearly every Ontario divorce. You can be separated while still living in the same home if the substance of the relationship has ended: separate bedrooms, no shared meals, no shared finances, no holding out as a couple to friends and family. The court looks at the substance, not the address — many Ontario men spend the first months of separation inside the matrimonial home because there is nowhere else to go, and the year still counts. A reconciliation attempt of up to 90 days does not reset the clock, even if you resume living together for a short period. The intent of the Divorce Act is to give couples a chance to try again without losing the time they have already accumulated. Once you cross 90 days of resumed cohabitation, the clock resets.
When this doesn't apply
The two fault grounds — adultery and cruelty — let you apply without the one-year wait. In practice, they are rarely worth using. Both require evidence (affidavits, sometimes cross-examination), both add cost, and both almost always turn a quiet uncontested file into a contested one. The grounds also have no effect on parenting, support, or property — those still run under the Family Law Act and the Federal Child Support Tables regardless of fault. For nearly every Ontario man, the cost of proving fault exceeds the cost of just waiting the year. The one exception: an annulment — a declaration the marriage was never valid — does not require the year, but the grounds are extremely narrow. See annulment in Ontario.
What to do
Treat the one-year separation as your work window, not a waiting room. Use the months to settle parenting, support, and property in a written separation agreement, with each of you taking Independent Legal Advice before signing. At about month 10, prepare the divorce application. File at month 12 so the court starts processing it while the last weeks of the year elapse — by the time the year is officially complete, the application is already in front of a judge. That cuts months off the total timeline from separation to certificate.
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Frequently asked questions
When does the one-year separation clock start in Ontario?
The day you and your spouse begin to live separate and apart in substance - not the day you file the divorce application, and not the day you sign a separation agreement. You can be separated while still in the same home if the relationship is over in substance: separate bedrooms, no shared meals, no shared finances, no holding out as a couple.
Can you be separated while living together in Ontario?
Yes. Ontario courts look at the substance of the relationship, not the address. Many Ontario men begin the separation period inside the matrimonial home because they have nowhere else to go, and the year still counts. The factors the court considers: separate bedrooms, separate finances, no shared meals or social life, no sexual relations, communicating the separation to others.
Does a brief reconciliation reset the one-year clock?
Only if you resume living together for more than 90 days. The Divorce Act allows reconciliation attempts of up to 90 days without resetting the separation clock - the intent is to encourage couples to try again without penalty. Cross 90 days of resumed cohabitation and the clock starts over.
Can I file for divorce in Ontario before the year is up?
Yes. You can file the divorce application at any point during the separation. The court will accept and start processing the file, but will not grant the divorce until you have been separated for one full year. Filing at month 10 to 12 lets the court process the paperwork while the last weeks of the year elapse, so the divorce is granted not long after the year is complete.
Are there exceptions to the one-year separation rule?
Two: adultery and cruelty under section 8(2)(b) and (c) of the Divorce Act. Both let you apply without the one-year wait but both require evidence and almost always turn an uncontested file into a contested one. For nearly every Ontario man, the cost and conflict of proving fault exceed the cost of waiting the year.