Bitcoin Spikes as US Supreme Court Strikes Down Trump Tariffs

In a landmark 6–3 decision, the Supreme Court of the United States has ruled that President Donald Trump’s sweeping global tariffs were illegal, delivering a sharp blow to one of the White House’s core economic policies.

The decision immediately lifted risk appetite across financial markets — including crypto — though traders remain cautious about what comes next.

Supreme Court Overturns Trump’s Global Tariffs, Triggering Market Relief Rally and Crypto Volatility

Chief Justice John Roberts authored the majority opinion, joined by Justices Amy Coney Barrett, Neil Gorsuch, Ketanji Brown Jackson, Elena Kagan, and Sonia Sotomayor. The dissent came from Justices Clarence Thomas, Samuel Alito, and Brett Kavanaugh.

At issue was Trump’s use of the International Emergency Economic Powers Act (IEEPA) to impose broad “reciprocal” tariffs in 2025 on imports from China, Canada, Mexico, the European Union, Japan, and South Korea.

The Court held that IEEPA — a statute designed for national emergencies — does not grant the president unilateral authority to enact sweeping trade tariffs.

Based on this, the court ruled that such powers fall squarely under Congress’s constitutional authority over taxation and trade regulation.

The majority leaned on the “major questions doctrine,” arguing that actions of vast economic and political significance require clear congressional authorization.

While sector-specific tariffs under laws like Section 232 remain intact, most global duties imposed under IEEPA have now been invalidated.

$150 Billion Refund Shock?

The ruling potentially opens the door to more than $150 billion in tariff refunds. Estimates from policy analysts suggest that between $130 billion and $175 billion in collected duties may now be subject to legal challenge.

Hundreds of companies — including major retailers such as Costco — had already filed lawsuits seeking repayment.

While the Court did not directly address refund mechanisms, lower courts and the Treasury Department now face the complex task of determining how and when claims may be processed.

If executed at scale, refunds could function as an unexpected fiscal injection into the private sector — a dynamic some traders have dubbed “accidental stimulus.”

Stocks Rally — Crypto Follows, Then Fades

Traditional markets responded immediately. The S&P 500 and Nasdaq-100 surged to session highs following the announcement, reflecting relief over reduced trade tensions and lower inflation risks.

Crypto mirrored the move — but with less conviction.

Bitcoin (BTC) jumped roughly 2% on the headline, briefly reclaiming the $68,000 level before retracing toward $67,000.

Ethereum (ETH) and major altcoins posted modest gains but failed to sustain breakout momentum. The broader crypto market cap ticked higher in sympathy with equities before consolidating.

The initial reaction suggests the ruling is mildly bullish for digital assets. Removing broad tariffs eases fears of imported inflation, supply chain strain, and retaliatory trade wars. All these can strengthen the US dollar and pressure risk assets like crypto.

Cautious Optimism

Despite the relief bounce, sentiment remains measured. Traders are weighing several countervailing forces:

• Uncertainty over how tariff refunds will impact federal revenues and fiscal stability
• Signals that Trump may pivot to alternative trade authorities, such as Section 301 or Section 232
• Elevated macro volatility ahead of key economic data releases

Notwithstanding, the ruling is broadly seen as net positive but not a structural catalyst, highlighting the possibility of short-term volatility rather than a sustained bull breakout.

For now, the Supreme Court’s decision reduces one major macro overhang. But with policy responses, refund logistics, and broader economic data still ahead, crypto markets appear poised for continued volatility rather than immediate liftoff.