Canada · GST/HST
Canada GST/HST Number Checker
Check a Canadian GST/HST number and business name against CRA GST/HST registration records.
What is a GST/HST number?
A GST/HST number is the account a business uses to charge and remit Canada’s Goods and Services Tax or Harmonized Sales Tax: its 9-digit Business Number, the letters RT and a 4-digit reference. Vistaprint Canada Corporation, for example, prints 75761 0928 RT0001 on its GST policy page.
Canadian GST/HST number format
The Business Number, RT for GST/HST, and a four-digit reference.
(9 digits)
(GST/HST)
number
Example: 757610928RT0001 (Vistaprint Canada Corporation, as printed on vistaprint.ca).
- Number and name: Enter the business name with the number. The registration is confirmed only for a name that matches CRA records.
- 9 digits are enough: The checker accepts the 9-digit BN or the full 15-character form; spaces are removed.
- Check digit: The CRA does not publish one, but every BN we have seen passes the Luhn (mod 10) check, and the CRA rejects numbers that fail it.
- GST/HST, not VAT: Canada’s value-added tax is called GST/HST, so there is no “VAT number”. Québec’s QST has its own number.
How to check a GST/HST number
- 1 Find the GST/HST number on the supplier’s invoice — invoices of $100 or more must show it to support input tax credits.
- 2 Enter the number, as 9 digits or with RT0001, and the supplier’s legal, operating or trade name.
- 3 The checker confirms the GST/HST registration against CRA records.
- 4 Want to use the CRA’s own GST/HST Registry? Our GST/HST verification guide walks through it.
Frequently Asked Questions
How do I check a Canadian GST/HST number? (Comment vérifier un numéro de TPS/TVH?)
Enter the number and the supplier’s business name in the checker on this page: it confirms the GST/HST registration against CRA records. For the CRA’s own GST/HST Registry, see our GST/HST verification guide.
Why do I need the business name?
The CRA confirms a GST/HST registration only for a number and name that belong together. Use the legal, operating or trade name. Case and punctuation do not matter, but the name must otherwise match: “shopify inc” matches Shopify Inc., “Shopify Payments” does not.
What is the GST/HST number format?
The 9-digit Business Number, the letters RT and a 4-digit reference, for example 757610928RT0001. Only the first 9 digits identify the business, and the CRA checks only those.
What do RT0001 and RT9999 mean?
RT is the CRA program identifier for GST/HST, and 0001 is the first GST/HST account of that business. RT9999 marks a registration under the simplified GST/HST regime used by non-resident digital-economy businesses.
When must a supplier show its GST/HST number on an invoice?
For the buyer to claim an input tax credit, documentation for a sale of $100 or more must show the supplier’s GST/HST registration number.
Is a GST/HST number the same as a Business Number?
The GST/HST number is the Business Number’s GST/HST account: the same 9 digits plus RT and a reference. Check a Business Number on its own.
Last reviewed: , against official sources.
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