What Documents Do You Need to Start a Divorce in Canada?

Starting a divorce is already emotionally exhausting. Pile unfamiliar paperwork on top of that, and most people freeze before they've touched a single form. The good news is the document list isn't nearly as long as most people fear.

But you do need the right ones gathered before you walk into a courthouse or pick up the phone to call a lawyer. Here are six documents you need to start a divorce in Canada, laid out plainly so you can get organized without the confusion.

Your Original Marriage Certificate

Many clients arrive ready to file but without a certified copy of their marriage certificate, which is one of the most common early stumbling blocks in the process; however, by contacting Simple Divorce's Toronto divorce lawyers, clients will be alerted to this situation beforehand. A photocopy from your wallet won't cut it, and neither will a screenshot on your phone. What you need is the original government-issued certificate or a certified copy from the province or territory where the marriage took place. If the ceremony happened outside Canada and the certificate isn't in English or French, a certified translation is also required. Contact Service Ontario - or whichever registry operates in your province - well ahead of time, since requests can drag on for several weeks. The name on the certificate must match your government-issued ID exactly; even a dropped accent or missing hyphen can stall your application at the courthouse. Pull this one first. Everything else in the process depends on it.

Government-Issued Photo Identification

The court needs to confirm who you are, so valid photo ID is non-negotiable for any divorce filing. A Canadian passport, a provincial driver's licence, or a Permanent Resident card all work fine. Here's the thing: the name on your ID has to match the name on your marriage certificate and your divorce application precisely. If you've legally changed your name at any point through marriage, deed poll, or a court order, you'll need documentation that traces each version of the name clearly. In Ontario, that usually means a Change of Name Certificate issued by the province. Check your expiry dates before anything else; expired identification won't be accepted, and discovering that problem mid-application creates a delay that's entirely avoidable with a two-minute check done beforehand.

Proof of Separation

Canada's Divorce Act requires that spouses live separate and apart for at least one year before a court will grant a divorce, in most cases. You don't necessarily need separate homes to qualify - separation under the same roof is recognized - but a clear, documented separation date is essential. That date becomes a load-bearing piece of information on your divorce application. The cleanest way to establish it is a written separation agreement signed by both spouses, naming the date you agreed the marriage was over. And if no such agreement exists, other records can do the job: utility bills in one spouse's name only, lease agreements showing different addresses, correspondence routed to separate locations, or statutory declarations. Courts don't demand a mountain of evidence, but having one or two documents that consistently point to the same date will head off questions from a court registrar before they start.

Financial Disclosure Documents

This is where the document list gets genuinely long. In an uncontested divorce where property and support are already settled, the financial requirements are lighter - but you'll still need to account for whatever was agreed upon. In a contested matter, or one involving a separation agreement that touches property division or spousal support, each spouse typically has to complete a Financial Statement (Form 13 or Form 13.1 in Ontario, depending on what's in dispute). These forms ask for a full picture: income, monthly expenses, assets, debts - all of it. Supporting records include tax returns from the last two years, Notices of Assessment from the Canada Revenue Agency, recent pay stubs, bank statements, and property documentation such as a current mortgage statement or real estate appraisal. So gather these records early; your lawyer or the court can ask for them at almost any point, and hunting for three-year-old tax documents mid-proceeding burns both time and money.

Parenting and Child Support Documents (If You Have Children)

If you and your spouse have children under the age of majority, the court won't grant a divorce until it's satisfied their best interests are properly addressed. That means a parenting plan or separation agreement covering custody arrangements, decision-making responsibilities, and a day-to-day schedule. You'll also need documentation tied to child support, which is calculated under the Federal Child Support Guidelines based on the paying parent's income, T4 slips, Notices of Assessment, or proof of self-employment earnings feed directly into that number. If there's an existing court order from a prior proceeding about parenting or support, bring a copy of that too. Don't treat this document as optional even when both spouses are in full agreement; a written, signed parenting plan filed before you apply is one of the most direct ways to keep the proceeding from hitting unexpected delays.

Completed Divorce Court Forms

Every Canadian divorce starts with a formal application filed with the Superior Court of Justice, or its provincial equivalent. In Ontario, that's the Divorce Application - Form 8A for a joint uncontested application, or Form 8 when one spouse files alone. The forms ask for identifying information, marriage and separation dates, details about any children, and the specific orders you're seeking. Once completed, the application must be signed and sworn or affirmed before a commissioner for taking oaths, then filed at the courthouse for the municipality where either spouse lives. Filing fees apply; in Ontario, the fee ranged from $167 to $332 as of the 2025 court fee schedule, depending on whether the application is joint or sole. Keep copies of every filed document - you'll refer back to them more than once as things move forward.

Conclusion

Knowing what documents you need to start a divorce in Canada strips away at least one layer of uncertainty from a process that already carries plenty of it. Start with your marriage certificate and valid ID, lock down a clear separation date, and pull your financial records together as early as you can. Court forms come last, once the foundational documents are in order. But because divorce law is shaped by both federal legislation and provincial court rules, consult a family lawyer licensed in your province before you file, particularly if children, property, or unresolved support issues are part of the picture. This article provides general information only and doesn't constitute legal advice or create a lawyer-client relationship.