The Canada Revenue Agency’s GST/HST Registry allows registrants to validate the GST/HST number of their supplier, which helps to ensure that claims submitted for input tax credits only include GST/HST charged by suppliers who are registered for GST/HST purposes.
The registry is not intended for use as a search engine. Information not related to a business transaction between a GST/HST registrant and a supplier will not be provided.
The GST/HST Registry is available here.