Yes, it is possible to modify or cancel your IELTS registration, but it depends on the timing and the policies of your test center. If you need to change your IELTS exam dates, most test centers allow rescheduling, provided you request it at least five weeks before the test day. However, a transfer fee may apply. If you wish to cancel, you may be eligible for a refund, minus an administrative fee, if done within the specified period. After the deadline, changes or cancellations are typically not allowed, and the fee may be forfeited. Always double-check your IELTS exam dates before registering to minimize the need for modifications.