On July 1, the United States formally declined to extend the Canada-United States-Mexico Agreement at its first mandatory six-year joint review. Canada and Mexico had each asked in advance to renew the agreement for a further 16-year term. The US said no. Nothing about that sentence means CUSMA ended, and nothing about it changes a single tariff rate today, but for a CCPC owner with cross-border exposure, the planning calculus just shifted from a fixed deadline to an open-ended one.
CUSMA remains fully in force. It does not expire until July 1, 2036, and it can still be renewed at any point before then. What changed on July 1 is that the parties will now hold annual reviews for the next decade instead of the next scheduled review being six years away. Global Affairs Canada confirmed the agreement's core protections, including the fact that roughly 90% of Canadian exports to the US still cross the border duty free under CUSMA, are unaffected by the outcome of this review.
What Actually Changed on July 1, and What Didn't
The sectoral tariffs that have applied to Canadian steel, aluminum, autos, and lumber under Section 232 authority remain exactly where they were before the review. CUSMA was never the instrument shielding those sectors, and this review did not touch them. What did move is the medium-term planning horizon. RBC Economics estimates that if CUSMA protection were removed entirely, the average effective US tariff rate on Canadian exports would roughly double, from about 3.2% today to 6.6%, a scenario that remains hypothetical but is now formally on a rolling annual review clock rather than a six-year one.
For a CCPC owner running an integrated supply chain into the US, that shift in cadence is the actual planning event. An owner who structured a five-year capital expenditure plan around six years of policy stability now needs to plan around the possibility of a materially different review outcome every twelve months.
Three tariff regimes now apply to Canadian exporters simultaneously, and only one of them moved as a result of the July 1 CUSMA review, which is none of them.
The Section 232 sectoral tariff applies regardless of CUSMA's status. The hypothetical without-CUSMA rate reflects RBC's estimate if preferential treatment were removed entirely, a scenario not triggered by the July 1 review outcome.
The Account Type and Structure Questions This Raises
Three structures carry the most direct exposure. A CCPC with automotive, machinery, plastics, aluminum, or wood product exports, the five categories RBC identifies as most exposed to a CUSMA lapse in dollar terms, should have its rules-of-origin documentation current now rather than at the next filing deadline. A trust structure holding shares of an exporting CCPC on behalf of a business owner's family should have its valuation assumptions stress-tested against a tariff scenario, not just a base case. And a holding company structure built around an eventual sale of an exporting business should treat trade policy uncertainty as a factor in timing that conversation, not a footnote to it.
None of this requires an immediate transaction. It requires the same discipline CUSMA's own review process now imposes on Ottawa: revisit the assumptions annually instead of once every six years.
Where the July 2027 Deadline Actually Sits
The one hard date that changed this month is not the CUSMA review clock. Canada separately extended its Steel Derivative Goods Surtax Order exemption for automotive and aerospace inputs, along with related relief under the United States Surtax Remission Order, from an original expiry of June 30, 2026 to July 1, 2027. A CCPC owner in an affected sector who has not confirmed eligibility for that extended remission window is leaving a concrete, dated planning item unaddressed while focusing on the more abstract CUSMA review timeline.