Register of individuals with significant control (ISC)
Most private corporations in Canada must keep an individuals with significant control register, and federal and Quebec corporations also report that information to their registry. Incorpo builds the register into your digital minute book and prepares the filings, so the information stays current and protected.
Direct answer
The individuals with significant control register lists the people who own or control a significant part of a private corporation, directly or indirectly. For federal corporations, the register is mandatory (Yes, since June 2019source) and the information is filed with Corporations Canada (Yes, since January 22, 2024source). In Quebec, ultimate beneficiaries are declared to the enterprise register.
Who counts as an individual with significant control
An individual with significant control (ISC) is a natural person, never a corporation, who sits at the end of the ownership chain or who controls the corporation in practice. The register exists to show who really stands behind a private corporation, even when shares are held through holding companies, trusts or nominees.
- Direct or indirect holding: shares held personally, through a holding company or through a trust all count toward the threshold.
- Acting together: under the federal rules and similar provincial ones, individuals who hold shares jointly or under an agreement to exercise their rights together can each be an ISC, even if none of them crosses the threshold alone.
- Control in fact: a person who can direct the corporation's decisions, for example through a shareholder agreement, financing terms or family ties, can be an ISC without holding any share.
- More than one, or none: a corporation can have several ISCs. When no one meets the definition, the register records that fact and the steps taken to check it.
A few common cases show how the test works. Two founders who each hold half of the voting shares are both ISCs. A founder who holds all the shares of a holding company, which in turn holds a majority of the operating corporation, is an ISC of the operating corporation. A parent who holds no shares but who, under a shareholder agreement, appoints the majority of the board can be one too. An employee holding a small block of options generally is not, until the options are exercised and the threshold is reached.
Applying these rules to a structure with several holding companies, trusts or a shareholder agreement takes judgment. Incorpo's questionnaire asks the questions the register needs, but deciding whether a particular person is an ISC in a complex structure is a question for a lawyer.
What the individuals with significant control register must contain
The register is a corporate record, kept with the minute bookminute bookOfficial record holding a corporation’s articles, by-laws, resolutions and registers.See definition → at the registered office or another place the statute allows. For a federal corporation, it generally contains, for each ISC:
- full name, date of birth and latest known address;
- jurisdiction of residence for tax purposes;
- the date the person became an ISC and, later, the date they ceased to be one;
- a description of how the person is an ISC: shares held, rights, control in fact;
- a description of the steps the corporation took during each financial year to identify its ISCs and keep the register up to date.
The register is not a one-time document. It is updated when the corporation learns of a change (a share transfer, a new shareholder agreement, a change of address) and reviewed at least once a year. Most provinces now require a similar register, with differences in content, location and access.
The corporation cannot always obtain everything it needs on its own. Shareholders are expected to answer its requests for information to the best of their knowledge, and the register records the steps taken when information is missing or unconfirmed. Keeping a dated trace of those requests is part of showing that the register was kept properly.
- Ontario: Mandatory register of individuals with significant control, kept at the registered officesource.
- British Columbia: Mandatory for B.C. private companies since Oct. 1, 2020source.
- Saskatchewan: Mandatorysource.
- Manitoba: Mandatorysource.
- New Brunswick: Required since June 10, 2022source.
- Nova Scotia: Required (since 2020), kept at the registered office or another place in Nova Scotiasource.
- Yukon: Required since 2025-06-01; register to be created by 2026-06-01source.
The rules for Alberta, the Northwest Territories and Nunavut are being verified and are not shown here yet.
Filing with the registry (federal, Quebec)
In most provinces, the register stays inside the corporation and is shown to authorities only on request. Two regimes go further and require the information to be filed with the registry itself: the federal one and Quebec's.
Quebec's obligation applies to enterprises registered in Quebec, including federal corporations and corporations from other provinces that do business there. A federal corporation active in Quebec can therefore file ISC information with Corporations Canada and declare its ultimate beneficiaries to the Registraire des entreprises; the two definitions are close but not identical.
Elsewhere, the register is kept but not filed. Ontario: No filing: kept at the registered or head office since 2023-01-01, provided on request to authoritiessource. British Columbia: No: kept at the company's records officesource. Prince Edward Island takes its own approach: Shareholder information filed in the OCBR (since Sept. 1, 2020)source.
Protecting personal information
The register contains sensitive personal information: dates of birth, home addresses and tax residence. Access depends on the jurisdiction, and the rules have changed several times since federal registers became mandatory.
- Federal: information made public by Corporations Canada: Name, residential address or address for service, start/end dates, description of controlsource.
- Quebec: Partly public: name, dates, address, condition and percentage; date of birth not publicsource.
- Ontario: Not public; disclosed on request to law enforcement, tax and regulatory authoritiessource.
- British Columbia: Not publicsource.
- Nova Scotia: Not public: access for shareholders and creditors (by affidavit) and investigative bodiessource.
- Newfoundland and Labrador: Not public; shareholders and creditors on affidavitsource.
Inside the corporation, the register is personal information like any other. Privacy laws, including PIPEDA and, in Quebec, Law 25, expect it to be kept securely, accessed only by the people who need it and not used for unrelated purposes. Only the information the statute requires belongs in it.
Outside the corporation, access to a register kept internally is limited. Depending on the statute, shareholders and creditors can consult it under conditions, often by sworn statement, and police, tax and regulatory authorities can obtain a copy on request. Nova Scotia and Newfoundland and Labrador, listed above, illustrate that model.
In Incorpo's digital minute book, the register sits with the other corporate records, accessible to the users you authorize on the account. The questionnaire collects only the fields the register needs, and each change is dated so the annual review can show what was checked and when.
Frequently asked questions
Does every corporation need an ISC register?
What percentage makes someone an individual with significant control?
Is the ISC register public?
When does a federal corporation file ISC information?
What is the difference between an ISC and an ultimate beneficiary?
Can a corporation be an individual with significant control?
Who in the corporation is responsible for the register?
Facts used and their sources
- Obligation de tenir un registre des particuliers ayant un contrôle important (PCI) : Yes, since June 2019 — Corporations Canada — Individuals with significant control (verified 2026-10-28)
- Dépôt des renseignements sur les PCI auprès de Corporations Canada : Yes, since January 22, 2024 — Corporations Canada — Individuals with significant control (verified 2026-10-28)
- Registre des particuliers ayant un contrôle important (LSAO) : Mandatory register of individuals with significant control, kept at the registered office — Business Corporations Act, R.S.O. 1990, c. B.16 (e-Laws, consolidation au 2026-10-23) (verified 2026-10-28)
- Dépôt du registre des particuliers ayant un contrôle important au registraire ontarien : No filing: kept at the registered or head office since 2023-01-01, provided on request to authorities — Ontario Business Registry: all services (ontario.ca, mis à jour le 2026-04-01) (verified 2026-10-28)
- Entreprises tenues de déclarer leurs bénéficiaires ultimes au Registraire des entreprises : Ultimate beneficiaries must be declared by for-profit legal persons, sole proprietorships, partnerships and commercial trusts — Entreprises qui doivent déclarer un bénéficiaire ultime (Québec.ca) (verified 2026-10-28)
- Dépôt des renseignements sur les bénéficiaires ultimes au Registraire des entreprises : Yes, since 2023-03-31, filed with the enterprise register — Entreprises qui doivent déclarer un bénéficiaire ultime (Québec.ca) (verified 2026-10-28)
- Obligation pour les sociétés fermées de la C.-B. de tenir un registre de transparence : Mandatory for B.C. private companies since Oct. 1, 2020 — Transparency Register — gov.bc.ca (mis à jour le 2022-09-01) (verified 2026-10-28)
- Dépôt du registre de transparence au registraire : No: kept at the company's records office — Transparency Register — gov.bc.ca (mis à jour le 2022-09-01) (verified 2026-10-28)
- Registre des particuliers ayant un contrôle important (Business Corporations Act de l'Alberta) : No ISC register: the records a corporation must keep (s. 21(1)) do not include a register of individuals with significant control — Business Corporations Act, RSA 2000, c. B-9 (current as of September 2, 2026) — Alberta King's Printer (verified 2026-10-29)
- Registre des particuliers ayant un contrôle important : Mandatory — The Business Corporations Act, 2021, SS 2021, c 6 (Publications Saskatchewan, consolidation incl. 2024 c 4 et c 10) (verified 2026-10-28)
- Communication du registre ISC au registraire : Not filed; disclosed on the Registrar's request — The Business Corporations Act, 2021, SS 2021, c 6 (Publications Saskatchewan, consolidation incl. 2024 c 4 et c 10) (verified 2026-10-28)
- Registre des particuliers ayant un contrôle important : Mandatory — The Corporations Act, C.C.S.M. c. C225 (Manitoba Laws) (verified 2026-10-28)
- Communication du registre ISC au directeur : Not filed; disclosed on request — The Corporations Act, C.C.S.M. c. C225 (Manitoba Laws) (verified 2026-10-28)
- Registre des particuliers ayant un contrôle important : Required since June 10, 2022 — Beneficial Ownership Register — Service New Brunswick Corporate Registry (verified 2026-10-13)
- Dépôt du registre ISC au registre corporatif : Not filed; copies provided to authorities on request — Beneficial Ownership Register — Service New Brunswick Corporate Registry (verified 2026-10-13)
- Registre des particuliers ayant un contrôle important : Required (since 2020), kept at the registered office or another place in Nova Scotia — Companies Act, R.S.N.S. 1989, c. 81 (consolidation January 20, 2026) — Nova Scotia Legislature (verified 2026-09-11)
- Dépôt du registre ISC au registraire : No filing; disclosed to the Registrar on request — Companies Act, R.S.N.S. 1989, c. 81 (consolidation January 20, 2026) — Nova Scotia Legislature (verified 2026-09-11)
- Registre des particuliers ayant un contrôle important : Required, kept at the registered office or another place in PEI — Business Corporations Act, R.S.P.E.I. 1988, c. B-6.01 (office consolidation current to June 30, 2026) — Legislative Counsel Office (verified 2026-10-29)
- Dépôt des renseignements sur les actionnaires au registre (OCBR) : Shareholder information filed in the OCBR (since Sept. 1, 2020) — Corporate Transparency Requirements — Government of Prince Edward Island (verified 2026-06-10)
- Registre des particuliers ayant un contrôle important : Required — Corporations Act, RSNL 1990, c. C-36 (version officielle, House of Assembly NL ; modifiée jusqu'à 2021 c26) (verified 2026-10-28)
- Dépôt du registre ISC au registraire : Not filed; disclosed to the registrar on request — Corporations Act, RSNL 1990, c. C-36 (version officielle, House of Assembly NL ; modifiée jusqu'à 2021 c26) (verified 2026-10-28)
- Registre des particuliers ayant un contrôle important (ISC) : Required since 2025-06-01; register to be created by 2026-06-01 — Register individuals with significant control of your corporation (Yukon.ca, modifiée 2025-06-02) (verified 2026-10-28)
- Dépôt du registre ISC au registraire : No: copy provided only to law enforcement, tax and regulatory authorities on request — Register individuals with significant control of your corporation (Yukon.ca, modifiée 2025-06-02) (verified 2026-10-28)
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