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  1. Fonteum
  2. /
  3. Glossary
  4. /
  5. Canadian Corporation Number / Business Number
Fonteum Data GlossaryData Standards

What is a Canadian corporation number?

A Canadian corporation number is the Corporations Canada identifier for a federal corporation record. A Canadian business number, or BN, is a separate Canada Revenue Agency identifier for tax and program accounts. Federal corporation records may include both, so check which number matches the filing or lookup task.

Full name: Corporations Canada Corporation Number and CRA Business Number

Short explanation

Corporations Canada assigns corporation numbers to federal corporation records. The Canada Revenue Agency assigns business numbers for tax and program-account administration. A federal corporation record may carry a corporation number and a BN, but they answer different questions: the corporation number identifies the federal corporate record, while the BN identifies the business for CRA and other program-account purposes.

Related platform: Entity graph - resolved organization records

Last updated: 2026-07-11Reviewed by: Fonteum data standards desk — Source-provenance editorial review. Definitions checked against primary federal sources.

How it’s used

  • Federal corporation lookup: Corporations Canada lets users search federal corporations by name, corporation number, or business number.
  • Open Canada bulk records: federal corporation files include corporation number, business number, corporate name, legislation, status, and address fields.
  • Fonteum stores corporation number and BN separately so corporate-registration facts and tax/program-account facts remain traceable to their source.

Frequently asked questions

Is a Canadian corporation number the same as a business number?
No. The corporation number identifies the federal corporation record. The business number is assigned by CRA for tax and program accounts.
How many digits are in a Canadian business number?
A BN starts with a nine-digit registration number and can include a six-character program-account identifier.
Where can you look up a federal Canadian corporation?
Use Corporations Canada's federal corporation search by name, corporation number, or business number.

Related terms

  • UK Company Number
  • LEI
  • NZBN
  • Entity Resolution
  • Provenance
  • Due Diligence

Explore in Fonteum

How Fonteum sources, resolves, and publishes data tied to this term.

  • PlatformEntity graph - resolved organization records
  • PlatformProvider and organization data API
  • PlatformSource provenance model

Authoritative sources

  • Corporations Canada: glossary of terms↗
  • CRA: when you need a business number↗
  • Corporations Canada: search for a federal corporation↗
← All glossary terms

What’s on file, by the numbers

Platform snapshot · 2026-07-15

13.4Mproviders & companiesProviders, organizations, owners, and facilities on file
26.2Msource-linked factsSource-linked field facts in the dated platform snapshot
—sources liveCrosswalk-resolved sources with a proved content transition in the preceding 45 days
111sources integratedActive registry rows; integration does not establish a load
13state Medicaid jurisdictionsDistinct states represented in the state-exclusions serving table

Built on the authoritative federal record

The primary sources, named on every page.

These are the federal agencies whose public datasets Fonteum ingests and attributes — the issuing authorities, not customers or partners. Every figure on the site links back to one of them.

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  • Census
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  • BEA

See the full source registry, with license and refresh cadence for each →

Reproducible by design

Published figures name their source and date.

Source and date

Published research identifies its government file and observation date. Source-file SHA-256 coverage is disclosed separately; facts do not currently link deterministically to signatures.

Reproducible SQL

Each study ships the exact query behind its figures, run against the same dated copy of the federal file we used. Re-run it yourself.

Daily observations

The platform records table row counts daily. Those observations detect local drift; they do not imply that an upstream publisher released or Fonteum ingested new data that day.

Named medical review

Reviewed by Jennifer Montecillo, MD, medical reviewer. Non-practicing medical reviewer.

Read the full provenance and attestation methodology →

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Reviewed by Jennifer Montecillo, MD, medical reviewer. Non-practicing medical reviewer.

© 2026 Fonteum LLC. All rights reserved.

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A public-records graph that exposes source and observation metadata where supplied.

Fonteum's provenance ledger contained 26.2M source-linked facts on July 12, 2026. All but 14 carried a source-file SHA-256; 0 linked deterministically to a signature. Inspect a supplied snapshot id at fonteum.com/verify · source-mark coverage and limitations.
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