Whether you need an IELTS test or not depends on your reason to sit the test. If you are enrolling for higher studies/courses/training, the University/school/workplace might ask for an IELTS test score. As part of the migration process, you might have to provide the IELTS scores with your visa application.
We strongly recommend that even if you are a native English speaker, you prepare for the IELTS test and become familiar with the test format. Knowing what to expect on test day is essential, and if you are not familiar with the test you may make avoidable mistakes. We also recommend you become familiar with the assessment criteria to fully understand how the examiner will mark your test.
Download IELTS Support Tools to help you get ready for test day.