Where do I find my corporation and/or business number?

Your business number is assigned by the CRA shortly after incorporation. You can find your business number through a free Government of Canada search or by consulting Canada's Business Registries.

Your corporation number is assigned by Corporations Canada or a Provincial Business Registry upon incorporation. You can find your corporation number through a free Government of Canada search or by consulting Canada's Business Registries. This number may also be referred to as your Registry ID. If you have both a business number and a corporation number, please provide your corporation number.