President
The tariff, which Trump ordered in a Friday directive, is set to take effect Feb. 24 at 12:01 a.m. Washington time, according to a fact sheet released by the White House.
“It is my Great Honor to have just signed, from the Oval Office, a Global 10% Tariff on all Countries, which will be effective almost immediately. Thank you for your attention to this matter!” Trump wrote in a social media post.
Trump is implementing the new baseline duty under Section 122 of the Trade Act of 1974, which grants the president unilateral ability to impose tariffs. But the untested legal provision puts a 150-day limit on how long the duties can remain in place.
Congress would need to approve any extension, a complication for the president as Democrats and some Republicans have resisted parts of his tariff agenda.
Earlier:
The Supreme Court, in a 6-3 decision handed down earlier Friday, ruled that Trump’s use of a decades-old federal emergency-powers law to impose his so-called “reciprocal” tariffs was unlawful. Trump invoked the International Emergency Economic Powers Act last April to impose duties on dozens of US trading partners, ranging from 10% to 50%.
The justices invalidated those tariffs along with duties on goods from Canada, Mexico and China that Trump imposed in the name of addressing fentanyl trafficking. The ruling also casts doubt on separate IEEPA tariffs placed on goods from Brazil and India.
Along with the flat 10% rate, Trump said he would keep in place existing import taxes under Section 301 and Section 232 and signaled plans to undertake more trade investigations. Trump directed the Office of the US Trade Representative to begin probes under its Section 301 authority, according to the fact sheet.
Section 301 tariffs require country-specific inquiries that include hearings and an opportunity for input from affected companies or nations. Officials would have to conclude the country has violated a trade agreement or engaged in practices that burden US trade in order to impose the tariffs.
“We expect these investigations to cover most major trading partners and to address areas of concern such as industrial excess capacity, forced labor, pharmaceutical pricing practices, discrimination against US technology companies and digital goods and services, digital services taxes, ocean pollution and practices related to the trade in seafood, rice, and other products,” US Trade Representative
Greer said the new probes would follow an “accelerated timeframe” while ongoing Section 301 probes, including into Brazil and China, would continue.
Big Take:
The Trump administration has previously used those measures to impose duties on Chinese exports, automobiles and metals. The president earlier on Friday suggested that those investigations could be carried out while the 10% baseline was in place, and eventually replace the flat rate — though he declined to rule out whether he might also seek an extension of the Section 122 levies. Trump said he was considering tariffs on foreign cars ranging from 15% to 30%.
The president’s plan to impose a 10% global duty could lift the average US effective tariff rate to 16.5% from 13.6%, or lower it to 11.4% if current exemptions are maintained, Bloomberg Economics estimated.
Greer, when asked about existing exemptions, said the White House was seeking “continuity” with the new order, which will take effect on the day that Trump is to deliver his State of the Union speech to Congress.
Among those exemptions, which also won’t be subject to the new 10% tariff, are goods compliant with the existing USMCA trade deal between the US, Canada and Mexico. The order also preserves exemptions for some agricultural goods in keeping with the previous, invalidated levies.
Read More:
Representative
“Congress will be voting on these more if he does this. Bottom line,” he said. Bacon was one of six Republicans who joined House Democrats to overturn Trump’s tariffs on Canada last week.
Read More:
The Supreme Court decision raises fresh questions about revenue that already has been collected on tariffs. More than 1,500 companies had filed tariff lawsuits in trade court in preparation for the ruling, according to a Bloomberg analysis.
The justices did not broach whether importers are entitled to refunds, leaving it to a lower court to weigh in. Trump criticized the Supreme Court for not providing guidance on how refunds should be handled. “It’s not discussed. We’ll end up being in court for the next five years,” Trump lamented during a White House press conference.
Refunds could total as much as $170 billion — more than half the total revenue Trump’s tariffs have brought in. Still, Treasury Secretary
“Treasury’s estimates show that the use of Section 122 authority, combined with potentially enhanced Section 232 and Section 301 tariffs will result in virtually unchanged tariff revenue in 2026,” he told the Economic Club of Dallas on Friday.
(Updates with 301 investigations, Bacon remarks, starting in 10th paragraph.)
--With assistance from
To contact the reporters on this story:
To contact the editors responsible for this story:
Derek Wallbank, John Harney
© 2026 Bloomberg L.P. All rights reserved. Used with permission.
Learn more about Bloomberg Law or Log In to keep reading:
See Breaking News in Context
Bloomberg Law provides trusted coverage of current events enhanced with legal analysis.
Already a subscriber?
Log in to keep reading or access research tools and resources.