The Import One Stop Shop lets non EU sellers collect VAT at checkout on goods of 150 euros or less sold to EU consumers, then file one monthly return instead of registering in every member state where shoppers live.
Before the change, a US brand selling small orders across Europe faced VAT registration questions in up to twenty seven countries, each with its own rate, forms, and language. In practice many brands either overpaid intermediaries, under complied quietly, or stopped selling to smaller EU markets altogether.
IOSS collapses that into one registration in one member state, often through an intermediary for non EU sellers, one monthly return, and one payment that is distributed to the countries where shoppers actually live. The compliance surface shrinks from a continent to a process.
IOSS applies to distance sales of imported goods in consignments of 150 euros or less sold to consumers in the EU. Above that value, the shipment follows the standard import route with VAT and possible duty at the border. Business buyers with VAT numbers follow different rules, and marketplace sales are usually handled under the platform deemed supplier rules instead.
The IOSS number must travel with the shipment data. A parcel whose data lacks a valid IOSS number gets taxed at the border anyway, and a number shared publicly gets abused by unrelated sellers, which is why the number is treated as a credential rather than a formality.
VAT under IOSS is charged at the rate of the destination country, and rates differ meaningfully across the EU. The checkout therefore needs reliable country detection, per product rate mapping for reduced rate categories, and prices that present VAT sensibly to shoppers used to inclusive pricing.
Evidence of the shopper location must be kept, because the brand owes its rate choice to auditors later. Good systems store the location evidence with the order instead of reconstructing it from shipping data months after the fact.
With IOSS working, an EU shopper pays a final price at checkout and the parcel arrives without a tax demand or a carrier handling fee. That experience competes directly with domestic EU sellers, which is the commercial point of the scheme for a US brand.
Without it, small orders arrive with VAT plus a carrier fee that can rival the tax, and shoppers learn to avoid US stores for modest purchases. The fee, not the tax, is what usually kills the repeat order.
Choose the registration route and intermediary deliberately, since the brand remains liable for the accuracy of returns. Connect the IOSS number to carrier data flows, test orders to several member states at different rates, and reconcile checkout VAT against the monthly return before filing becomes routine.
Brands that already run UK VAT will recognize the shape: collect at checkout, keep the paperwork invisible to the shopper, and reconcile monthly. IOSS is the same discipline at European scale, with one return instead of a drawer full of registrations.
Keep reading: How do US brands handle UK VAT when selling to British shoppers?, How do US brands clear Canadian customs without surprise charges for buyers?, and How do US brands handle Australia GST on low value imported goods? cover the nearby cases in this series.
Import One Stop Shop. It lets non EU sellers collect destination country VAT at checkout on consumer consignments of 150 euros or less, then file one monthly return in one member state instead of registering across the EU.
They follow the standard import process, with VAT and any duty handled at the border through the carrier. IOSS only covers low value consumer consignments, and marketplace sales are usually taxed under the platform rules.
Because it travels with shipment data to prove VAT was collected. If the number leaks, unrelated sellers can use it to move their own goods as if VAT was paid, creating liability for the brand the number belongs to.
A final price at checkout and no tax demand or carrier handling fee at delivery. That removes the surprise charge that most often stops EU shoppers buying again from a US store.