Supreme Court Strikes Down Trump Tariffs—What It Means for Markets

Key Takeaways

• The Supreme Court struck down the sweeping tariffs President Trump enacted in 2025.
• Markets moved modestly higher on the news, with the US Market Index up 0.83% in mid-morning trading.
• The muted reaction comes after a the ruling that was largely expected, and analysts say the administration will look for workarounds.

Is tariff drama finally in the rearview mirror? On Friday, the Supreme Court ruled against many of the sweeping tariffs President Donald Trump enacted last year.

Trump criticized the decision and the justices who ruled against him, and indicated Friday afternoon that he intends to impose a 10% global tariff using other means.

The ruling boosted stocks in the United States and Europe, and could provide more clarity and stability for businesses, at least in the short term. That’s a critical change after a year of policy volatility “made projections, budgeting, and investment plans quite difficult,” according to Dominic Pappalardo, chief multi-asset strategist for Morningstar Wealth. “Anything that can eliminate or reduce this uncertainty will be viewed as positive by those impacted,” he explains. This clarity could also help even out disruptions in spending for consumers and business.

But at the same time, analysts agree that the Trump administration is likely to continue to pursue tariffs, and some have argued that any boost to stocks and economic growth may be modest and short-lived.

Friday’s ruling applies to the tariffs enacted under the International Economic Emergency Powers Act, which include the wide-ranging measures announced on April 2, 2025, along with separate tariffs imposed on Canada, Mexico, and China.

The court’s decision is being widely characterized as a rebuke of Trump’s use of federal emergency powers to further his trade agenda. “Had Congress intended to convey the distinct and extraordinary power to impose tariffs, it would have done so expressly,” wrote Chief Justice John Roberts in the decision.

Market Impact of the SCOTUS Ruling

Stocks rallied modestly on the news, though the outcome was largely expected. The Morningstar US Market Index was up 0.33% in mid-morning trading.

“For markets, the ruling modestly reduces US trade policy uncertainty at the margin by limiting the president’s ability to impose abrupt, executive‑driven tariff shocks," wrote Dan Siluk, head of global short duration and liquidity at Janus Henderson.

European markets rallied as well, with the Morningstar Europe Index up 0.83%. Michael Field, chief equity strategist for Morningstar in Europe, said the ruling would remove uncertainty for businesses and help boost equities. “The removal of the administration’s ability to level tariffs should give greater clarity for these businesses and allow them to plan and invest more easily,” he said.

Meanwhile, the yield on the 10-year US Treasury bond rose 3/10ths of a percentage point to 4.097%.

Siluk of Janus Henderson says that over the longer term, the decision could put upward pressure on longer-dated bond yields, especially if the US Treasury Department must issue more debt to repay the revenue it has already collected from tariffs. “If the courts ultimately require the Treasury to refund a meaningful share of previously collected tariff revenues, the resulting fiscal shortfall would need to be financed through higher issuance,” he wrote Friday.

What’s Comes Next for Tariffs?

Analysts say that despite Friday’s ruling, the Trump administration is likely to pursue other avenues to impose tariffs on trading partners across the globe. They advise investors that many key questions around tariffs remain unresolved, meaning any boost to markets or economic growth stemming from the decision may ultimately be tempered by more uncertainty.

Jeff Buchbinder, chief equity strategist for LPL Financial, thinks the market bounce will likely be brief. “The administration will quickly pivot to different legal grounds for replacement tariffs while deficits go higher in the interim,” he says.

“Any boost to the economy from lowering tariffs in the near term is likely to be partly offset by a prolonged period of uncertainty, and with the administration likely to rebuild tariffs through other, more durable means, the overall tariffs rate may yet settle close to current levels,” wrote Oxford Economics chief US economist Michael Pearce in a Friday note.

Natixis chief US economist Christopher Hodge says tariffs will likely remain a “core component” of Trump’s trade agenda, with “plenty of tools” still in the arsenal and future levies focused more narrowly on on specific goods. However, he adds that the current focus on affordability suggests the White House will be more hesitant to employ them. “While we cannot discount the possibility of renewed threats and continued drama in the trade realm, we think that we have seen the peak of effective tariff rates,” he wrote in a Friday note to clients.

Morningstar’s Pappalardo characterizes the decision as a “small but welcome step toward steadiness” and argues that the impact will persist over the longer term. “Ironically, if the administration pushes to use other statues to legitimize the existing tariffs, it could cause a temporary spike in volatility, but the longer-run implications of today’s ruling are likely still calming,” he says.