15 Common Mistakes to Avoid in ANY Immigration Application to Canada!

Learn how to avoid common mistakes from the perspective of an immigration lawyer.

Last updated on
May 14, 2025

Avoid these mistakes

Navigating through the intricacies of immigration procedures can be complex, and even seemingly minor errors can have significant consequences. In this blog, we aim to empower prospective immigrants with valuable insights to avoid common pitfalls, ensuring a smoother and more successful application journey.

The author, Cédric Marin, an immigration lawyer, sheds light on the common mistakes frequently observed in immigration applications. With a primary focus on rejected applications, Cédric Marin has encountered a multitude of cases and witnessed various pitfalls that applicants often encounter during the process. He helps clients properly prepare applications and overcome refusals, either by reapplying, filing a judicial review or seeking reconsideration.

Understanding the implications of mistakes is essential, as they can lead to additional document requests, returned applications, refusals, and in some cases, even accusations of misrepresentation.

With Cédric Marin's extensive experience in handling immigration matters and addressing the challenges faced by applicants, we bring you practical tips, best practices, and essential advice to maximize your chances of a positive outcome. Whether you are considering permanent residency, like Express Entry or family sponsorship, or temporary residence, like a work permit or a study permit, staying informed about common mistakes is crucial for a smooth application.

Document Checklist and Fees:

Carefully review the document checklist provided by IRCC. Did you know that there are country-specific checklists for study permits, visitor visas and even spousal sponsorships. Make sure you submit all the required documents and pay the correct fees. Failure to include necessary documents or paying incorrect fees can lead to delays or even lead to a rejection of your application. Some programs have very specific requirements for documents, like Express Entry.

Even if the online application system does not prompt you for certain documents or fees, you nevertheless have the responsibility to provide these documents and demonstrate to IRCC that you meet all the requirements for issuance of your temporary or permanent residency application.

One of the most common mistakes I see when reviewing refused immigration applications to Canada—whether for study permits, work permits, or permanent residence—is the assumption that IRCC has an obligation to follow up if something is missing or incomplete.

In my practice, I’ve handled many judicial reviews of refusals where applicants were shocked to learn that their application was rejected because of a missing document—often something as simple as a reference letter or a letter of support. Understandably, they feel frustrated and believe that IRCC should have asked for the missing item or given them a chance to provide it. But unfortunately, that’s not how the system works.

IRCC does not have a legal duty to request missing or incomplete documents in most cases. If an application is filed and IRCC determines it is incomplete or lacks sufficient evidence, they are permitted to refuse it outright. This can feel harsh, but the responsibility lies with the applicant (or their representative) to ensure that the application is complete, accurate, and well-documented at the time of submission.

There are only limited scenarios where IRCC does have a legal duty to seek clarification or provide an opportunity to respond. These situations typically involve:

  • Potential misrepresentation (e.g., if IRCC believes you provided false or misleading information);
  • Inadmissibility concerns (such as criminality or security issues).

In these cases, procedural fairness requires IRCC to give you a chance to respond before making a final decision. However, if your application simply lacks evidence or supporting documentation, IRCC has no obligation to reach out or give you an opportunity to fix it.

This is why it’s so important to submit a complete and well-prepared application from the start. Even seemingly minor oversights—like not including a letter of reference or failing to provide clear proof of funds—can result in a refusal with no second chance.

If your application has already been refused and you believe IRCC made an error or failed to consider important information that was submitted, you may have grounds to request a judicial review in Federal Court. But even in that context, the Court will only look at the evidence that was before the decision-maker—not new documents or explanations.

Letter of Explanation (LOE):

A Letter of Explanation (LOE) is an optional but powerful document you can include with your immigration application to Canada. It gives you the chance to directly address the immigration officer and provide context for anything that might appear unusual, incomplete, or unclear in your file. While your forms and supporting documents tell most of the story, the LOE helps fill in the gaps.

You should consider including an LOE if you're missing a document, need to clarify discrepancies (like mismatched dates or name spellings), or want to explain unusual circumstances—such as a study gap, a change in career, or combined financial support from different sources. It's also helpful when you're submitting alternative evidence, like a sworn statement in place of a hard-to-obtain document.

A good LOE is short, clear, and factual. Use simple language, organize your points logically, and avoid emotional or defensive language. If possible, back up your explanations with supporting documents—like a tracking receipt for a delayed transcript or a letter from an employer confirming job duties.

Keep in mind, however, that an LOE is not a substitute for required documents. If you're missing something mandatory, IRCC can refuse your application without asking for clarification. But when used wisely, an LOE can go a long way in helping an officer understand your case and make a fair decision.

Additional Relevant Documents:

Don't hesitate to include additional supporting documents if they are relevant to your application. These documents can further strengthen your case. Be strategic in selecting documents that provide relevant and compelling evidence. Feel free to cross-reference them from your LOE.

Thoroughly Read and Understand Questions:

Pay close attention to the questions asked in the application forms. Take the time to thoroughly understand each question and provide accurate and complete answers. Avoid rushing through this process, as errors or omissions may lead to complications in the assessment.

Thoroughly Read and Understand Questions (again):

What? Why did you include this subtitle again? No, seriously, read the forms and instructions VERY carefully. Individuals have been banned from Canada for five years since they did not read the questions carefully, they have been rejected permanent residency on a technically since they did not know about a document, or they had to leave Canada since they applied after a work/study permit expired.

Here are some examples:

Study permits and work permits: the employment question asks you to disclose all employment over the last 5 or 10 years. If you do not have enough space (i.e. more than three employment slots), the small fine print on page 1 says to include a separate sheet. Failure to do so could lead to a rejection or a misrepresentation.

Express Entry – under Education, IRCC will ask if you studied English or French as a second language: “Was more than half of the study program English or French as a second language courses?” Some people say yes since they studied in English or French. However, for IRCC, this has as specific meaning and they are referring to a second language program under section 30(5) of the Ministerial Instructions. (Side note: they often change, so make sure to refer to the most up-to-date version here.) If you say yes, it will make your Canadian education not eligible.

Seek Assistance if Uncertain:

If you encounter any uncertainties or complexities during the application process, seek professional assistance. Cédric Marin has five years of experience in immigration and refugee law, and he helps you navigate the complexities and avoid potential pitfalls. Ask him questions, review an application or have him complete the whole application on your behalf.

Failure to Translate Documents:

If the application includes documents in languages other than English or French, they must be translated into one of these official languages. Failure to provide translations can lead to issues with the application.

Missed Deadlines:

Missing application submission deadlines or failing to respond to requests for additional information within specified timelines can result in adverse outcomes. Did you know that IRCC uses UCT time as the deadline? See date and time of receipt of application.

Inconsistent Information:

Providing conflicting information in different parts of the application or compared to previous submissions can raise concerns about credibility.

Gaps in time:

Some instructions specify that there should be no gaps in time.

Signatures:

Ensure that the documents are signed properly and by the right person. In spousal applications, some forms must be signed by the sponsor, the principal applicant or both. Some rules apply for signatures and minors.

Remember that attention to detail, comprehensive documentation, and seeking expert guidance when needed can make a significant difference in the outcome of your application.

You can schedule a consultation to discuss your specific questions and concerns, allowing you to gain clarity and confidence in your application process. Additionally, Cédric is equipped to conduct comprehensive reviews of your applications, meticulously analyzing each aspect to enhance its strength and accuracy. For those seeking comprehensive assistance, Cédric Marin offers support throughout the entire application process, ensuring that all necessary steps are completed with precision and efficiency. With Cédric Marin's expertise at your disposal, you can navigate the complexities of the immigration process with ease, maximizing your chances of a successful outcome.


Book a Call with Cédric Marin, Immigration Lawyer. Whether you're applying for the first time or trying to overturn a refusal, I provide one-on-one legal representation to get you results. No legal assistants. No generic advice. Just complete, well-prepared applications and strategic support when things go wrong. Let's talk about how to move your case forward—successfully.

Disclaimer: The information provided in this blog is general informational purposes and it is not legal advice. The information not a substitute for professional legal advice, and it may not be appropriate for you. Do not rely exclusively on this blog. Always conduct your own research and due diligence. While we strive to provide accurate and up-to-date information, immigration laws and regulations can vary and change over time. It is important to consult with a qualified immigration lawyer if you are unsure how to proceed.