VERIFIED OFFICIAL SOURCE

Canada Revenue Agency - Ways to find an existing business number

canada.ca

Used by1 published procedure

Last checked2026-10-02

Source domaincanada.ca

Official source URLhttps://www.canada.ca/en/revenue-agency/services/tax/businesses/topics/business-registration/find-business-number.html

CONNECTED GUIDES

Procedures using this source

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CACanada

How to Get a CRA Business Number and Find Your Existing BN in Canada

Find out whether your Canadian business already has a 9-digit CRA business number, when you need one, and how to register through Business Registration Online. Since July 14, 2026,

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Rules, fees, forms and processing routes can change. Helpydo connects procedural guidance to the responsible authority so you can verify time-sensitive details before acting.