Canada BN check

Q: Can I check BNs from code or in bulk?

Yes. The same check is available over the REST API (GET /v1/ca/bn/{id}) and the MCP server, with the same key as every other country. See the API docs.

Check a Canada BN against the official registry and get the legal name, the status and a pass, review or fail verdict. Official registry

Example: 847871746RT0001 (federal corporation). No account needed: 10 lookups a day per network, shared with the keyless API.

What this check tells you

Official registry

For BN we first check the structure and check digit, then look the number up in ISED – Corporations Canada, Federal Corporations open data (daily copy). The answer gives the legal name and the registry status, and a pass, review or fail verdict with reasons. Every answer carries source.data_as_of.

Businesses run by one person get their status only, never a name or address.

Canada ID formats we check

ID type	Level	Check digit	API endpoint	Official lookup
BN Business Number (BN), optionally with program account such as RT0001 (GST/HST)	Official registry	Luhn on the 9-digit BN	`GET /v1/ca/bn/{id}`	Canada Revenue Agency: confirming a GST/HST account number

From code

Same key and quota as every other country. A well-formed request costs one lookup; a source that does not answer returns HTTP 503 and is not counted.

curl "https://taxid.halpii.com/v1/ca/bn/847871746RT0001" \
  -H "Authorization: Bearer $KEY"

Get a no-cost API key (100 lookups a day) or read the API docs.

Questions

Does a valid BN mean the company exists?

Only the registry lookup tells you that. A number that passes the format check is then looked up in ISED – Corporations Canada, Federal Corporations open data; the answer says whether it was found and its status.

Where does the data come from?

From ISED – Corporations Canada, Federal Corporations open data (daily copy). Each answer includes the source and the date of the data.

Can I check BNs from code or in bulk?

Yes. The same check is available over the REST API (GET /v1/ca/bn/{id}) and the MCP server, with the same key as every other country. See the API docs.

Is this service affiliated with the Canada tax authority?

No. HALPII Tax ID is an independent service run by HALPII S.A.C. (Lima, Peru). Results are informational, not legal or tax advice.

Other countries in Americas

All countries and verification levels

Last updated 2026-11-14. An independent service run by HALPII S.A.C. (Lima, Peru), not affiliated with or endorsed by any Canada authority.