U.S. Supreme Court’s Tariff Ruling and What it Means for Business Aviation

U.S. Supreme Court’s Tariff Ruling and What it Means for Business Aviation

On February 20, 2026, the Supreme Court of the United States (SCOTUS) delivered a landmark decision in Learning Resources, Inc. v. Donald J. Trump, holding that the International Emergency Economic Powers Act (IEEPA) does not authorize the President to impose tariffs on imported goods without Congressional delegation. The 6-3 majority led by Chief Justice John Roberts emphasized that tariff powers are a taxing authority constitutionally reserved to Congress, and that the emergency powers statute did not explicitly include tariff imposition.

This ruling struck down a broad array of tariffs that had been implemented under IEEPA, which had significant implications for cross-border trade, including the aerospace industry.  

Background: Executive Tariff Authority and Litigation

In 2025, the U.S. administration imposed a series of sweeping tariffs on imports from Canada, Mexico, China, and other trading partners, invoking IEEPA as the legal basis. These included tariffs that directly affected aircraft and aerospace components.

Litigation over those tariffs was consolidated in cases such as Learning Resources and V.O.S. Selections, Inc. v. Trump. Lower courts repeatedly held that IEEPA did not confer tariff authority, and the Federal Circuit affirmed that the presidency had exceeded statutory authority. The Supreme Court’s decision marks the culmination of that judicial trajectory.

Status of Existing Tariffs

• Following the Supreme Court’s decision, President Trump issued two executive orders and a proclamation to:

  • terminate IEEPA based tariffs effective February 24, 2026;
  • continue the duty free de minimis treatment for all countries; and
  • impose a global tariff of 10% (out of the 15% maximum permissible rate) under Section 122 of the Trades Act, 1974, which exempts aerospace products, including the aircraft, engines and parts listed in Annex II. The power is exercised to address a fundamental international payments imbalance and is limited to a 150-day duration, expiring July 24, 2026, unless extended by Congress or withdrawn earlier.

• Tariffs imposed under other statutory authorities such as Section 232 (National Security) or Section 301 (Unfair Trade Practices), will continue to exist as not imposed under IEEPA.

• The Court did not determine whether importers are entitled to refunds of tariffs already paid under IEEPA. That issue is expected to be addressed by lower courts and administrative agencies.

Of particular importance is the administration newly found appreciation for the economic value of aviation and aerospace as a strong export-oriented industry for the United States. The United States exports 6:1 versus imports of aviation and aerospace products, which ties aviation and aerospace industry with the chemicals industry for first place as the largest export/import surplus in the country.

Implications for Business Aviation

1. Limited Direct Exposure

   For aviation stakeholders, the immediate commercial impact of the decision is relatively contained. Canadian and Mexican origin aircraft and aerospace products currently benefit from preferential tariff treatment under CUSMA, which generally exempts qualifying goods from U.S. tariffs upon import into the United States. However, these preferential arrangements are subject to the Agreement’s built-in review mechanism, which requires a joint reassessment every six years. The next such review is scheduled for July 2026.

   The outcome of this review process conducted by the United States, Canada, and Mexico, may result in the continuation, modification, or renegotiation of certain aspects of the Agreement. Given the current political climate, the outcome of that review remains uncertain and may not be favorable to Canadian and Mexican aerospace interests.

   As a result of CUSMA, Canadian and Mexican manufactured aircraft exported from Canada or Mexico into the States were exempted from the IEEPA-based tariffs, and many transactions proceeded unaffected even before the ruling.

   Additionally, because of the SCOTUS decision and subsequent executive orders, there are currently no tariffs applicable to Israeli or Brazilian manufactured aircraft, nor to Canadian-manufactured aircraft arriving in the United States from outside Canada or Mexico.

2. Legal and Commercial Uncertainty

   That said, the decision does not deliver immediate commercial certainty. Instead, the ruling together with the President’s response has introduced a new layer of legal and transactional uncertainty. While the Court curtailed the use of a broadly framed emergency statute to impose tariffs, it remains unclear under what alternative legal authority or regime future tariff pressures may be sustained**,** leaving market participants without a stable or predictable framework.

   This uncertainty is particularly acute in aviation transactions, where pricing, financing assumptions, and contractual risk allocation are negotiated well in advance of delivery. In response, counterparties should focus on building greater contractual flexibility, including tariff-related adjustment mechanisms, termination rights, and pricing protections, to account for potential regulatory or trade policy shifts.

   At the same time, the ruling has created a short-term commercial opening. Aircraft transactions that were being negotiated against the backdrop of the recent tariff environment particularly involving Canadian-manufactured aircraft located outside the CUSMA zone are now, at least for the time being, able to proceed into the United States without any tariffs applying whatsoever, allowing stalled or repriced deals to move forward pending further policy developments.

3. Continued Exposure through other Trade Measures

   The ruling does not eliminate all trade risk for the aerospace sector. Tariffs or trade restrictions imposed under other statutory frameworks, including Section 122 (Trade Act), Section 232 (National Security) and Section 30 (Unfair Trade Practice), will still have an inflationary effect on aircraft components and sub-assemblies, steel, aluminum, and other aerospace inputs, and also the integrated aviation supply chains as a whole.

4. Implications for Aviation Finance and Leasing

   From a financing and leasing perspective, the decision is likely be viewed with caution by lenders and lessors. While it removes one statutory basis for tariffs under IEEPA, it introduces greater uncertainty by destabilizing the existing trade enforcement framework and increasing the likelihood of alternative tariff measures or legislative responses by the US Government. The absence of a clear replacement regime complicates several factors that goes over talks in trade dealings such as the import cost assumptions, residual value forecasting, and long-term cash-flow modeling, particularly where future trade measures may be imposed under different statutory authorities or through expedited congressional action, as indicated in President Trump’s immediate response to the ruling.

5. Refunds Process

   For purchasers that may have paid the IEEPA tariffs, it is imperative that they promptly seek competent trade council, such that any rights to refunds of unlawful tariffs previously paid could be reserved until the government of the United States provides further clarity on the process for such refunds.

Conclusion

The U.S. Supreme Court’s tariff decision represents a pivotal reaffirmation of constitutional tariff authority and statutory limits on executive action. For the business aviation industry, the immediate effect is the invalidation of a subset of recent tariffs and the potential reversal of related costs, balanced against ongoing uncertainties regarding refund mechanisms and future trade measures.

This decision, together with President Trump’s response, have laid the foundation for greater uncertainty in matters of aircraft sales into the United States, requiring careful drafting of contractual provisions to allocate and mitigate this potential trade and regulatory risk. Refunds on tariffs paid, and the process for obtaining them is currently unclear.

One important takeaway is that the educational efforts by associations such as the National Business Aviation Association (and many others) have provided the administration with greater appreciation for the economic value of aviation and aerospace as a strong export-oriented industry.