IEEPA (International Emergency Economic Powers Act)
Trade Agreements & Rates · US Import Rules
What is IEEPA (International Emergency Economic Powers Act)?
IEEPA (the International Emergency Economic Powers Act) is a 1977 US law that gives the president certain economic powers - like freezing assets or restricting transactions - once a national emergency affecting US national security, foreign policy, or the economy has been formally declared. It wasn't originally written with tariffs in mind.
In 2025, the US used IEEPA as the legal basis for a wave of broad "reciprocal" tariffs applied to dozens of countries. In February 2026, the Supreme Court ruled in *Learning Resources, Inc. v. Trump* that IEEPA doesn't actually authorize the president to impose tariffs at all, striking that entire tariff program down. The tariffs it had imposed were replaced by other legal mechanisms (first a Section 122 surcharge, then Section 301 tariffs) rather than simply disappearing.
IEEPA is an emergency-powers law originally meant for things like sanctions and asset freezes, not tariffs. In 2025 it got used as the legal foundation for a large set of new tariffs anyway - and in 2026 the Supreme Court said that use wasn't actually allowed, so those specific tariffs had to be replaced with a different legal justification.
When to Use It
IEEPA comes up when a US lane page explains why a tariff rate changed abruptly in 2025-2026 - it's part of the underlying legal history, not a rate you'll pay today, since the Supreme Court struck down its tariff use in February 2026.
It's a mistake to treat "IEEPA tariffs" as still in effect - the Supreme Court's February 2026 ruling struck down tariffs imposed under this authority specifically. If a source describes a current rate as an "IEEPA tariff," that's a sign the information is out of date; the legal basis has since shifted to other mechanisms.
Frequently Asked Questions About IEEPA (International Emergency Economic Powers Act)
Is IEEPA a tariff law?
Not originally - it’s a 1977 emergency-powers law mainly used for sanctions and asset freezes. It was used as the legal basis for a wave of tariffs in 2025, a use the Supreme Court later ruled wasn’t authorized.
Are IEEPA-based tariffs still in effect?
No - the Supreme Court struck down the IEEPA tariff program in February 2026 (*Learning Resources, Inc. v. Trump*). The tariffs it covered were replaced by other legal mechanisms rather than eliminated outright.
What replaced IEEPA tariffs after the court ruling?
A temporary Section 122 balance-of-payments surcharge followed immediately, and once that expired by statute, Section 301 tariffs became the main mechanism - a sequence several of this site’s US lane pages document in more detail.
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