Applicants seeking proof of Canadian citizenship by descent under Bill C-3 may need to submit a letter of explanation. This document, often called an LOE, addresses gaps, missing documents, or specific situations not covered by standard forms. Immigration, Refugees and Citizenship Canada, Canada's citizenship department, requires it in certain circumstances to ensure a complete submission.

The letter of explanation is a written note included with an application. It is necessary when required documents are missing or cannot be sourced. Other scenarios include name variances, date discrepancies, and for minor applicants who lack two pieces of identification or one with a photo. The applicant or their immigration lawyer writes the letter, which the applicant must sign.

The need for an LOE arises when applying for proof of Canadian citizenship by descent, particularly under Bill C-3. It helps an officer reviewing a file trace an unbroken line from the applicant back to their Canadian ancestor. This verifies names, dates, and the relationship between each generation. Without an explanation for missing documents or details that do not align, an officer cannot determine if it is a clerical gap or an incomplete application.

Applications with missing required documents will be returned if no letter of explanation is provided. The LOE closes gaps for officers, providing clarity instead of leaving them to guess. Submitting a complete and error free package is important because the processing time for these applications is 33 months as of September 2026, a figure that has been rising steadily.

Applicants should submit a complete application to avoid delays, especially given the rising processing times. Immigration lawyers can assist with drafting stronger letters for complex applications and provide personalized guidance.