The new rules, which mean all parcels originating or made in China and being sold into the US must pay import duty – of as much as 15% on fashion items – and an additional 10% tariff, are also expected to impact bigger online clothing retailers such as Asos and Boohoo.
The changes were introduced at the start of February in an attempt to protect US retailers from a surge in competition from the likes of Chinese online marketplaces Shein and Temu, but were indefinitely paused after the US customs service struggled to cope with the massive increase in parcels requiring checks last week.
About $5bn worth of parcels were exported to the US from the UK under de minimis rules in 2021, according to a Congressional Research Service analysis of data from US Customs and Border Protection.
It will not just affect goods made in China and then sent from the UK, but potentially a much wider array, as any package containing even one product made in China may have to pay import tax and pass through customs checks, further increasing costs, according to experts.
Chris White, at the logistics company Fulfilmentcrowd, said that during the brief period when the rules were in place in early February, one-third of the parcels it shipped to the US from the UK were found to be of Chinese origin and subject to the new taxes.