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imm 5645 vs imm 5406: which family information form and how to fill it

Applicants for Canadian immigration often find themselves navigating a complex array of forms and documentation requirements. Two forms that can be particularly confusing are the Additional Family Information form (IMM 5645) and the Additional Family Information / Additional Dependants form (IMM 5406). To clarify the differences between these two forms, we'll explain when to use each and provide tips on how to fill them out accurately.

what is the difference between imm 5645 and imm 5406

The primary difference between IMM 5645 and IMM 5406 lies in their purposes and the information they require. IMM 5645 is used to provide additional information about family members who are not accompanying the applicant to Canada. On the other hand, IMM 5406 is used for both additional family information and to declare additional dependants. Understanding which form to use is crucial to avoid delays or even rejection of the application. For instance, if an applicant has a spouse or children remaining in their home country, they would need to declare this information, but the form they use would depend on whether they have additional dependants or need to provide more detailed family information.

when to use imm 5645 vs imm 5406

Choosing the right form depends on the applicant's specific situation. If the applicant has family members who are not coming to Canada but need to be declared, such as a spouse or children remaining in the home country, they would use IMM 5645. However, if the applicant has additional dependants or needs to provide more detailed family information, they would use IMM 5406. It's essential to carefully review the instructions provided by Immigration, Refugees and Citizenship Canada (IRCC) to determine which form is necessary for the specific application. This can be a daunting task, especially for those who are not familiar with the Canadian immigration process.

how to fill out the additional family information form

Filling out either IMM 5645 or IMM 5406 requires careful attention to detail. Applicants must ensure that all information is accurate and complete, as errors or omissions can lead to the application being returned or delayed. To start, applicants should list all family members, including deceased family members, as the form asks for information about all family members, regardless of their current status. The marital status and children fields also require precise information. Applicants must accurately report their marital status and provide detailed information about their children, including those who are not dependants or are not accompanying them to Canada.

Applicants should always download the most current version of the form from the official IRCC website or through a trusted source like the IRCC forms library. Each form comes with an instruction guide that provides detailed information on how to fill it out. Applicants should read this guide carefully before starting to fill out the form. In my experience, taking the time to read through the guide can make a significant difference in ensuring the application is filled out correctly.

common mistakes to avoid

One of the most common mistakes applicants make is not listing all family members or not providing complete information about each family member. Another mistake is using outdated forms or not following the instructions provided in the guide. To avoid these mistakes, applicants should ensure all family members are declared, regardless of whether they are accompanying the applicant to Canada. They should also use the latest version of the form and follow the instructions carefully. Double-checking the application for completeness and accuracy before submission is also crucial.

Navigating the requirements for IMM 5645 and IMM 5406 can be challenging, but understanding the differences between these forms and how to fill them out accurately is crucial for a successful immigration application. By carefully following the instructions, ensuring all family members are listed, and avoiding common mistakes, applicants can help ensure their application is processed efficiently. For more information on IRCC forms and the immigration process, visit the IRCC forms section of our website or consult with a Regulated Canadian Immigration Consultant (RCIC) for personalized advice.

Official current rules are at canada.ca/immigration; this guide is independent reference content.

A small portion of this article — research support, fact-cross-checking, and copy-editing — was assisted by AI tooling. Editorial decisions, source verification, and final sign-off remain with our team. We cite primary sources from canada.ca for every factual claim.

Last reviewed: July 18, 2026

IRCC.com is an independent news site and not affiliated with the Government of Canada.

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