In Ontario, if you want to file for divorce, you need to complete a full, one year separation period, unless you file your divorce on the grounds of cruelty or adultery. Of course, you can begin applying to get divorced on the day you and your partner separate, but no Canadian court will grant you a divorce until a full year has passed. The three grounds that are acceptable for getting divorced in Ontario are outlined in the Divorce Act, which we explain on our Divorce page.