The Chinese fast-fashion giants will get slapped with a 10% tariff — but the end of a longtime trade loophole could hit them harder.

Trump revoked a tax loophole that saved companies tens of billions of dollars in fees on imports. Prices on such orders could now go up an average of 30 percent.

In addition to imposing a 10% levy on Chinese imports, Mr. Trump's executive order also suspended a little-known customs exemption that allowed goods of de minimis value — items worth less than $800 — to come into the U.