Business number registration
Most requested services for business number registration
- Register with the CRA's electronic services
Find out how to register businesses, representatives and payroll accounts quickly and easily with CRA’s electronic services.
Services and information
When you need a business number or Canada Revenue Agency program accounts
Certain business activities require registration with the CRA.
How to register for a business number
Register for a business number or CRA program accounts by mail, phone, fax, or online.
Changes to your business and tax accounts
For common business changes, make updates online, inform the CRA, and other actions.
Authorize a representative or cancel their authorization
Grant or cancel authorization to a representative, the types of access you can give, and the ways to authorize.
CRA registration and provincial or other federal programs
Your business number registration can be connected to other federal or provincial programs.
COVID-19 and information for employers
Learn about changes that the CRA has introduced to support businesses through the COVID-19 pandemic.
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