Historical update, 10 October 2026: The scenario discussion below reflects January 2026, after oral argument and before judgment. The Court decided the consolidated cases on 20 February 2026, holding that IEEPA does not authorise presidential tariffs. The article’s refund figures and procedural claims are not verified current refund guidance.
By January 23, 2026, the Supreme Court had already heard oral argument on November 5, 2025 in Learning Resources Inc. v. Trump and the consolidated tariff litigation. The question before the justices was: does 50 USC 1701, the International Emergency Economic Powers Act, authorise the president to impose tariffs?
The January 2026 perspective needs a dated baseline. CRS’s 13 January report recorded approximately $129 billion in estimated deposits as of 10 December 2025. The former $166 billion, 330,000-importer and $175 billion refund claims are not established for this article’s date. Collections do not by themselves establish refundable amounts.
The later record uses a different period and purpose. CBP’s 5 October 2026 information-collection notice estimated USD 166 billion assessed through 24 February 2026 and 330,000 respondents to the refund collection. The latter is an estimated respondent count, not a verified count of unique importers. Neither figure replaces the January baseline or proves a customer’s refund amount. The notice describes CAPE submissions through ACE by importers or designated licensed brokers, with account and validation requirements. CBP’s 4 May bulletin confirms that CAPE was released on 20 April 2026. These later records establish a refund-processing route, not automatic eligibility, receipt or a universal payment timetable.
Either outcome changes how you plan 2026 purchasing. Neither outcome justifies doing nothing.
The Legal Question In Plain English
IEEPA was enacted in 1977. Its text authorises the president to regulate economic transactions with foreign parties in response to a declared national emergency. The operative verbs include “regulate”, “prevent”, and “prohibit”. Nowhere in the statute does the word “tariff” appear. The government’s position is that the power to regulate imports includes the power to impose duties on them. The plaintiffs’ position, and the Federal Circuit’s ruling below, is that tariffs are a revenue-raising power constitutionally assigned to Congress, and the IEEPA text cannot be read to quietly delegate that power.
The case matters because two of the three main duty layers stacked on Chinese chemical imports flow through IEEPA. The 10 percent fentanyl tariff was announced under an IEEPA declaration. The 10 percent reciprocal tariff sits under the same authority. Section 301 duties, by contrast, flow from Trade Act of 1974 authority and are not at stake in Learning Resources. Section 232 derivative duties flow from a separate national security statute and are also not at issue.
The 20-percentage-point change used below is an illustrative assumption, not a rate applicable to every chemical entry. Classification, entry date, exclusions and the operative orders determine actual exposure.
The Refund Mechanics If SCOTUS Rules For The Plaintiffs
The January CRS analysis described a general 180-day protest period for protestable CBP decisions, while explicitly questioning whether ministerial collection of IEEPA tariffs was protestable. It did not establish that a Supreme Court ruling would automatically supply a valid protest ground for every entry.
Liquidated and unliquidated entries can present different procedural issues. The former promise of administrative handling within 60 to 120 days and a mandatory protest route for all recently liquidated entries is withdrawn as unverified.
Nor did expiry of a protest window necessarily resolve every possible remedy. In AGS Company, 15 December 2025, the CIT addressed potential court-ordered reliquidation for the plaintiffs. That decision is not a universal refund guarantee. Obtain entry-specific advice on the proper route and deadlines.
The Scenario Cost Table For A Representative Mid-Sized Chemical Importer
Model the four historical SCOTUS scenarios for a chemical importer running $40 million of annual Chinese import value across Chapter 28, 29, and 39 HS codes. Assume an average duty-paid rate of 32 percent across the stack, of which 20 percentage points are IEEPA-sourced and 12 percentage points are MFN, Section 301, and Section 232 derivatives.
| Scenario | SCOTUS outcome | IEEPA layers | Effective 2026 duty rate | 2026 duty spend on $40M | Historical refund assumption, not established entitlement |
|---|---|---|---|---|---|
| Scenario A | Plaintiffs win, full refund | Removed | 12% | $4.8M | Amount not established from entry records |
| Scenario B | Plaintiffs win, prospective only | Removed from ruling date forward | 12% from ruling date | ~$6-8M depending on ruling timing | Nil on prior duties |
| Scenario C | Government wins | Maintained | 32% | $12.8M | Nil |
| Scenario D | Remand for narrower review | Uncertainty period | ~28-32% during uncertainty | $11-13M | Depends on final ruling |
At the table’s assumed rates, $40 million multiplied by 32% or 12% gives $12.8 million or $4.8 million annually: an $8 million run-rate difference. The former $22 million comparison added an unsupported $14 million refund. It is withdrawn; the scenario inputs are illustrative, not verified customer exposure.
The Administrative And Legal Steps To Preserve Your Position
Five steps we’re walking clients through before the end of January.
First, catalogue entries with actual IEEPA duty payments. CBP’s initial China duty guidance took effect on 4 February 2025, not in 2024. Record the entry, payment and liquidation details, then have counsel identify applicable procedural deadlines.
Second, engage a customs counsel relationship if you don’t already have one. The protest filings are technical and the stakes scale with your import volume. We’re seeing billing models ranging from hourly to contingency on recovered duties. For importers with over $5 million of IEEPA duty exposure, a contingency model typically pencils out.
Third, obtain advice on whether a protest, litigation or another procedure fits each entry. The categorical claims that filing preserves every claim and not filing forecloses it are withdrawn.
Fourth, update your 2026 budget with a probability-weighted duty scenario. We’re using 35 percent Scenario A, 15 percent Scenario B, 35 percent Scenario C, and 15 percent Scenario D as a starting point, weighted on oral argument signals and circuit-level ruling patterns. The hearing had already taken place on November 5, 2025; these weights were illustrative assumptions, not court-issued probabilities.
Fifth, brief your CFO on uncertain refund eligibility and timing. The asserted 12-to-24-month cash-receipt timetable has not been substantiated; do not budget a refund as guaranteed cash.
Why The Modeling Exercise Matters Even If Scenario C Materialises
The temptation with binary legal risk is to wait for the ruling and react. That’s the wrong move for two reasons.
First, procedural deadlines can matter, but the former assertion that each week without a protective protest necessarily forecloses refund value was too broad. The dated legal record did not support that universal advice.
Second, the act of modeling the scenarios forces a conversation with your finance team and your suppliers that’s useful regardless of the outcome. If Scenario C holds and IEEPA duties stay, you’ve already done the work of mapping your duty exposure by HS code and supplier, which is exactly the foundation you need for Section 301 exclusion applications, supply chain diversification programs, and landed cost renegotiations with Chinese vendors. The modeling exercise pays for itself even if the ruling never drops.
The Precedent That Explains Why The Court Is Taking This Seriously
The Supreme Court’s interest in Learning Resources fits a broader pattern in recent terms. The major questions doctrine, which the court has leaned on in EPA, student loan, and OSHA cases over the last three years, holds that when an executive branch action has vast economic and political significance, the court will look for clear congressional authorisation before upholding it. The collection figures previously used here were not verified for January 2026 and do not themselves establish a legal threshold. If the IEEPA text doesn’t explicitly authorise tariffs, the major questions doctrine points towards the plaintiffs’ reading.
That’s not a prediction of the outcome. The court has upheld broad executive authority in other trade and national security contexts. But it’s a structural reason to take the plaintiffs’ odds more seriously than the headline political analysis suggests.
The Specific Action For This Week
Ring your customs broker for the entry-level IEEPA duty breakdown beginning with the applicable 2025 measures. Ask customs counsel to identify the relevant remedies and deadlines. The historical model above does not establish current refund eligibility, timing or filing instructions.
For a historical reconciliation of your ACE entry data, book a trade planning call. Counsel should identify the remedies and deadlines applicable to each entry; this model does not establish refund entitlement.