You need a business number if you incorporate or need a CRA program account. You might need a business number to interact with other federal, provincial and municipal governments in Canada. For more information, go to Canada Revenue Agency registration and provincial or other federal programs.
Do I need a BN?
Overview. Alberta is one of the more recent provinces to partner with the Canada Revenue Agency (CRA) to provide federal business numbers for newly created corporations, non-profit organizations, and unincorporated businesses such as sole proprietorships and partnerships. ... There is no cost to obtain a business number.
Is BN same as GST number?
A GST/HST account number is part of a business number (BN). If you don't have a BN yet, you will receive one when you register for your GST/HST account.