US President Donald Trump announced Saturday that a 30 percent tariff on imports from the European Union and Mexico will take effect on August 1.

The decision was disclosed in letters addressed to European Commission President Ursula von der Leyen and Mexican President Claudia Sheinbaum, which Trump shared on his Truth Social platform, according to BBC.

Over the past week, the president has issued more than 20 similar letters to key US trading partners — including Canada, South Korea, Japan, and Brazil — outlining new tariff measures ranging from 20 to 50 percent.