Supreme Court Tariffs Ruling 2026: What Importers Need to Know Now

On February 20, 2026, the Supreme Court of the United States issued one of the most consequential trade rulings in decades. In a 6-3 decision, the Court held that the International Emergency Economic Powers Act (IEEPA) does not grant the president authority to impose broad import tariffs. The ruling effectively struck down the sweeping tariff regime that had been in place since early 2025, sending shockwaves through global supply chains and forcing a rapid policy pivot.

If you import goods into the United States, this ruling changes your cost structure, your compliance obligations, and possibly your right to a refund. Here is everything you need to know.

What the Supreme Court Actually Decided

The case centered on whether IEEPA -- a 1977 law designed to let the president freeze assets and block financial transactions during national emergencies -- also authorizes tariffs on imported goods. The Trump administration had used IEEPA to impose tariffs of 20% to 145% on imports from dozens of countries, arguing that trade deficits constituted a national emergency.

The Court disagreed. Writing for the majority, the opinion held that IEEPA's text authorizes the president to "regulate" and "prohibit" transactions and transfers of property, but does not include the power to tax imports. Tariffs, the Court noted, are a revenue measure historically reserved to Congress under the Constitution's Import-Export Clause.

Which Tariffs Were Struck Down

The ruling invalidated all tariffs that had been imposed solely under IEEPA authority. This includes:

• The universal baseline tariff of 10% on nearly all imports, imposed in April 2025
• Country-specific "reciprocal" tariffs ranging from 20% to 145%, including the massive tariffs on Chinese goods
• The escalation tariffs applied during various trade disputes throughout 2025

Tariffs imposed under other legal authorities remain in effect. This includes Section 301 tariffs on China (originally imposed in 2018-2019), Section 232 tariffs on steel and aluminum, and any tariffs authorized by specific trade legislation.

The Section 122 Pivot: What Replaced the IEEPA Tariffs

Within days of the ruling, the Trump administration pivoted to Section 122 of the Trade Act of 1974. This provision allows the president to impose temporary import surcharges to address "large and serious" balance-of-payments deficits.

The administration initially set Section 122 tariffs at 10% across the board, then raised them to 15% shortly after. However, Section 122 comes with a critical limitation: tariffs imposed under this authority cannot exceed 15% and expire automatically after 150 days unless Congress acts to extend them.

This means the current tariff landscape looks very different depending on where your goods originate:

• China: Section 301 tariffs (7.5-25%) + Section 122 (15%) still apply, but the total is far below the previous 145% IEEPA rate
• EU, Japan, Korea: Dropped from 20%+ reciprocal tariffs to just the 15% Section 122 surcharge
• Most other countries: Dropped from 10-50% IEEPA rates to the 15% Section 122 baseline

The $166 Billion Refund Question

Because the Supreme Court ruled that the IEEPA tariffs were unlawful from the start, importers who paid duties under IEEPA authority are entitled to refunds. Estimates put the total refund liability at approximately $166 billion -- a staggering sum that represents every IEEPA-authorized duty collected since April 2025.

U.S. Customs and Border Protection (CBP) has begun establishing a process for refund claims, but the logistics are enormous. Key things to know about refunds:

1. You must file a claim. Refunds are not automatic. Importers need to submit formal refund requests through CBP.
2. Documentation matters. Gather all entry summaries, duty payment records, and classification documents for imports that were subject to IEEPA tariffs.
3. Timing is uncertain. With $166 billion in claims to process, expect significant delays. Some customs brokers are advising clients to file early.
4. Interest may apply. Under existing law, refunds of unlawfully collected duties may include interest, though the rate and terms are still being determined.

What Current Tariff Rates Apply Right Now

As of April 2026, the effective tariff rates on most imports combine whatever pre-existing duties apply (MFN rates, Section 301, Section 232) with the Section 122 surcharge of 15%. Here is a simplified view:

What Importers Should Do Right Now

The ruling creates both opportunities and urgency. Here is a practical checklist:

1. Recalculate your landed costs. If you were paying IEEPA tariffs, your effective duty rates have changed significantly. Update your cost models immediately.
2. File refund claims. Work with your customs broker to identify all entries where IEEPA duties were paid and submit refund requests to CBP.
3. Understand the 150-day clock. Section 122 tariffs expire automatically. The clock started when they were imposed, so plan for what happens when they lapse. Read our Section 122 vs IEEPA comparison for details.
4. Review your supply chain. With the tariff landscape shifting, sourcing decisions made under the old IEEPA rates may no longer make sense.
5. Monitor Congress. The administration is pushing for legislation to authorize permanent tariffs. If Congress acts, the landscape will shift again.
6. Keep meticulous records. In a rapidly changing tariff environment, documentation is your best defense against overpayment and compliance risk.

What Happens Next

The Supreme Court ruling resolved the legal question of IEEPA tariff authority, but the trade policy fight is far from over. Several developments to watch:

• Congressional action: The administration is lobbying Congress to pass legislation explicitly authorizing the tariff rates that were struck down. This faces an uncertain path in a divided Congress.
• Section 122 expiration: The 150-day limit means these replacement tariffs will expire in mid-to-late 2026 unless renewed through legislation.
• New Section 301 investigations: The administration has launched new trade investigations that could lead to tariffs on additional products under authorities the Court did not touch.
• Retaliatory tariffs: Trading partners that had imposed retaliatory tariffs in response to the IEEPA duties are reevaluating their positions.

Frequently Asked Questions

What did the Supreme Court rule on tariffs in 2026?

On February 20, 2026, the Supreme Court ruled 6-3 that the International Emergency Economic Powers Act (IEEPA) does not authorize the president to impose broad import tariffs. The ruling struck down the sweeping tariffs imposed under IEEPA authority in early 2025, which had affected virtually all US imports with rates ranging from 10% to 145%.

Which justices voted to strike down the IEEPA tariffs?

The 6-3 majority included Chief Justice Roberts, Justice Gorsuch, and Justice Barrett joining the three liberal justices (Sotomayor, Kagan, and Jackson). Justices Thomas, Alito, and Kavanaugh dissented, arguing that IEEPA's broad language encompassed tariff authority.

What replaced the IEEPA tariffs after the Supreme Court ruling?

The Trump administration pivoted to Section 122 of the Trade Act of 1974, which allows the president to impose temporary tariffs up to 15% for a maximum of 150 days to address balance-of-payments emergencies. Initial rates were set at 10%, later raised to 15%.

How long can Section 122 tariffs last?

Section 122 tariffs are limited to 150 days by statute. After that period, they expire automatically unless Congress passes new legislation authorizing their continuation. This makes the current tariff regime inherently temporary.

Are importers entitled to refunds on IEEPA tariffs already paid?

Yes. Because the Supreme Court ruled the IEEPA tariffs were unlawful from the start, importers who paid duties under IEEPA authority are entitled to refunds. CBP has established a process for filing refund claims, with an estimated $166 billion in total refunds owed. Refunds are not automatic -- importers must file formal claims.