My study permit expires before my program ends. When and how do I extend it?

Apply online to extend your study permit before it expires. IRCC generally recommends applying at least 30 days ahead, and earlier is safer given processing times. You will typically need an enrolment letter showing your program continues, plus proof of funds. If you apply before expiry, you usually keep maintained status and can continue studying while you wait. Letting the permit expire without applying creates a much harder situation, so mark the date early and do not leave it late.