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Calgary, AB · 2026-09-24

Foreign Buyers and Alberta Companies: What the Investment Canada Act Means for a Deal

Foreign Investment: illustrated cover for a LawDB guide about Calgary, Alberta
Dentons Canada says it has been recognized by Thomson Reuters Market Insights in Canada for cross-border deals and cross-border litigation. This guide is our own general overview.

Alberta’s energy, agriculture and technology companies attract foreign investors. If a non-Canadian is buying or setting up a Canadian business, the federal Investment Canada Act may apply, and it can affect timing and terms.

Notification and review

Depending on the size and type of the transaction, a non-Canadian acquiring control of a Canadian business generally has to file a notification or seek approval under the Act. Larger deals can be reviewed to decide whether they are of net benefit to Canada. Thresholds change over time and depend on the investor’s country and the type of business, so they should be checked for the date of the deal.

A filing may be required before closing or shortly after, depending on the category.

National security

Separate from the net benefit review, the government can look at investments that may raise national security concerns, including smaller investments and minority stakes. The rules have tightened in recent years, particularly for sensitive sectors and state-owned investors.

Sectors such as critical minerals, energy infrastructure and data can draw closer scrutiny.

Practical steps for a deal team

Decide early whether a filing is needed and who is responsible for it. Build the timing into the purchase agreement, including conditions to closing and outside dates. Consider whether undertakings to the government, such as commitments on jobs or investment, may be requested.

For an acquisition team

Firm spotlight: Dentons Canada LLP

Dentons Canada has offices in Vancouver, Edmonton, Calgary, Toronto, Ottawa and Montréal, and traces its Canadian roots to 1839 in Toronto and 1888 in Edmonton. The Calgary office is on the 15th floor of Bankers Court on 2nd Street SW, and the firm is part of Dentons, which describes itself as the world’s largest law firm. See the full Dentons Canada LLP profile. Read more from Dentons’ website.

Frequently asked questions

What is the Investment Canada Act?

A federal law that governs acquisitions of Canadian businesses by non-Canadians, including notification and review requirements.

Does every foreign acquisition need approval?

No. Many need only a notification, while larger ones can be reviewed for net benefit.

Can small investments be reviewed for national security?

Yes. National security review is not limited to large acquisitions.

When should a filing be made?

It depends on the transaction, so timing should be planned in the purchase agreement.

Do thresholds change?

Yes, so always confirm the thresholds in effect at the date of the transaction.

Alberta firms to look at

Dentons Canada LLP★ 4.0 (22)Hoare Claxton Criminal Defence★ 5.0 (27)Cuming & Gillespie LLP★ 4.7 (80)McCarthy Tétrault LLP★ 4.6 (12)

See all Calgary law firms · All Alberta law firms

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General information for readers in Alberta, not legal advice for any specific situation. Laws, thresholds and deadlines change, so confirm current rules with a lawyer before relying on anything above. LawDB is an independent directory and is not affiliated with Dentons Canada LLP; firm details come from the firm’s own published descriptions and public listings.