Validate a QST Registration Number

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You can use this service to validate a business’s QST registration number.

You can also use this service to validate the QST registration number of a supplier outside Québec. As of January 1, 2019, certain suppliers outside Québec must register for the QST and collect the tax on certain taxable supplies they make in Québec.

Registration number to be validated
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If the registration number you are trying to validate has only nine digits, this means the business is a selected listed financial institution and that we have mandated the Canada Revenue Agency (CRA) to administer the QST collected by the business. To validate such a registration number, use the GST/HST registry on the Government of Canada website.
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Make sure the number you have is the QST registration number. If the number you are validating starts with 11, 22 or 33, it may be the Québec enterprise number (NEQ) assigned to the business by the Registraire des entreprises.
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