Business number registration

Key business registrations with the federal government.

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 for your business

Designate someone to deal with the CRA related to business number or program accounts.

CRA registration and provincial or other federal programs

Your business number registration can be connected to other federal or provincial programs.

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