If you are applying for a work visa, professional recognition or permanent residency in Canada, you will be required to present evidence of your English language proficiency as part of your application.
IELTS General Training is an internationally-available English language proficiency test accepted for immigration into Canada by Citizenship and Immigration Canada (CIC). The test evaluates your English proficiency on a scale of 0 to 9 in each of four skills: reading, writing, listening and speaking. You will need to meet the level stipulated by the Canadian Language Benchmark (CLB) in all of these skills.
In order for your visa to be processed, you will need to include your IELTS results as part of your application.