Business registration with the CRA
Find out when you may need a business number (BN) or program accounts, and how to register with the Canada Revenue Agency (CRA). Learn about options to find an existing BN and how to manage changes to your business.
Most requested
Services and information
Register for a BN and program accounts
When and how to register for a BN or add program accounts like GST/HST or payroll
Ways to find an existing BN
Get help if you don't know your BN or aren't sure if you have one
Maintain your business
Keep information up to date, changes to business operations, access to manage program accounts