Navigating child custody laws in Ontario can be complex, but understanding the necessary forms is a crucial first step. This guide will walk you through the essential documents you'll need to file for custody in Ontario, ensuring you're well-prepared for your journey through the family court system.

Before we delve into the specific forms, it's important to note that the court's primary concern is the best interests of the child. This principle guides all decisions regarding custody, access, and parenting plans. With this in mind, let's explore the key forms you'll need to file for custody in Ontario.

Initial Custody Application
The process begins with filing a custody application. This form initiates the court process and outlines your request for custody arrangements.

In Ontario, the primary form used for this purpose is the Application (Form 8A). This form is comprehensive, requiring detailed information about both parties, the children involved, and the specific custody arrangements you're seeking. It's crucial to fill out this form accurately and completely to ensure a smooth start to your case.
Form 8A: Application

Form 8A is a 14-page document that covers various aspects of your custody application. Here's a breakdown of the sections you'll need to complete:
- Part A - Applicant Information: This section requires details about you, the applicant, including your name, address, and contact information.
- Part B - Respondent Information: Provide information about the other parent, the respondent, in this section.
- Part C - Children: List all children under the age of 18 who are the subject of the application. Include their full names, dates of birth, and current addresses.
- Part D - Marital Status: Answer questions about your marital status and the length of your relationship with the respondent.
- Part E - Custody Arrangements: This is the heart of the application. Here, you'll outline the specific custody arrangements you're seeking, including parenting schedules, decision-making responsibilities, and any other relevant details.
Form 35.1: Affidavit

After completing Form 8A, you'll need to swear an affidavit (Form 35.1) to confirm that the information you've provided is true. This form is a sworn statement that accompanies your application, providing additional details and evidence to support your custody request.
In your affidavit, you can include details about your relationship with your children, your ability to provide for their needs, and any relevant history that supports your custody application. It's essential to be honest and thorough in your affidavit, as it plays a significant role in the court's decision-making process.
Additional Forms and Documents

Depending on your specific circumstances, you may need to file additional forms and documents to support your custody application. Some common examples include:
Financial Statements




















If you and the other parent have significant property or income, you may need to file a Financial Statement (Form 13.1) to provide the court with a clear picture of your financial situation. This form helps the court make informed decisions about child support and property division.
Consent Trifold
If you and the other parent agree on the custody arrangements, you can file a Consent Trifold (Forms 25, 26, and 27) to formalize your agreement. This package includes forms for both parents to complete, outlining the agreed-upon custody, access, and support arrangements.
Filing for custody in Ontario involves several steps and forms, but understanding the process and the required documents can help alleviate some of the stress. By familiarizing yourself with the necessary forms and seeking professional guidance when needed, you can navigate the family court system with confidence. As you embark on this journey, remember that the court's primary concern is the best interests of your children, and working towards a custody arrangement that prioritizes their well-being is crucial.