US President Donald Trump has threatened fresh trade action against the European Union following the bloc’s decision to fine Google €890 million for violating its Digital Markets Act (DMA).

In a post on his Truth Social platform on Friday, Trump accused the EU of unfairly targeting American companies and warned that the bloc would face significant consequences. He announced plans to launch a Section 301 investigation into what he described as discriminatory treatment of US businesses, adding that substantial tariffs on the EU could follow.

Trump argued that the United States would no longer tolerate what he called unfair economic practices against its companies, insisting that Europe should not treat America as a source of easy revenue.

The warning came just a day after the White House unveiled new tariffs ranging from 10 to 12.5 percent on imports from 60 trading partners, including the European Union. Those duties took effect on Friday under the same Section 301 authority, which allows the US government to investigate and respond to foreign trade practices considered unfair.

The dispute follows the European Commission’s decision to impose its first Google penalty under the DMA, a law designed to curb the market power of major technology firms.

The Commission split the sanctions into two parts. A €460 million fine addressed Google’s alleged practice of giving preferential treatment to its own services—including shopping, hotel, transport and sports results—in online searches. A separate €430 million penalty targeted restrictions within the Google Play Store that prevented app developers from directing users to cheaper offers outside the platform.

US Trade Representative Jamieson Greer criticized the EU’s move, arguing that it could undermine ongoing cooperation between Washington and Brussels and create new tensions in transatlantic trade relations.

European officials, however, defended the enforcement action, maintaining that the Digital Markets Act applies equally to all companies that meet its criteria. EU technology chief Henna Virkkunen said the bloc remained committed to enforcing its digital regulations.

Although the DMA allows penalties of up to 10 percent of a company’s global annual revenue—and as much as 20 percent for repeat violations—EU officials noted that Google’s latest fine represents only a small fraction of the company’s overall turnover.

The latest exchange highlights renewed friction between the United States and the European Union despite a trade framework reached last year that eased tariffs on European vehicles in return for concessions from Brussels. The agreement was intended to prevent a wider trade dispute, but Trump’s latest remarks suggest fresh tensions could be on the horizon.