EU IOSS vs OSS: What US Brands Selling in Europe Need to Know in 2026
Since July 2021, the EU VAT e-commerce package has applied to every non-EU seller shipping goods or supplying digital services to EU consumers. By 2026, enforcement has matured — Member State tax authorities now systematically cross-reference customs data, marketplace reporting, and OSS returns. A US brand selling to EU consumers without an IOSS or OSS registration is no longer flying under the radar.
IOSS — for goods up to EUR 150 imported into the EU
The Import One-Stop Shop lets a non-EU seller charge destination-country VAT at checkout on consignments valued up to EUR 150 (intrinsic value, excluding freight and insurance) and remit it monthly through a single EU Member State. The alternative — DDP at the border with the carrier collecting VAT plus a clearance fee — destroys conversion rates. Empirical data from 2024–25 shows checkout abandonment 18–32% higher on non-IOSS shipments.
OSS — for goods already in the EU, and for digital services
The One-Stop Shop is the bigger scheme. It covers (a) intra-EU distance sales of goods (you ship from a 3PL in Germany to a consumer in France) and (b) B2C supplies of telecommunications, broadcasting and electronically supplied services (TBE) — your SaaS subscription, your downloadable plugin, your streaming product. Threshold: a single EUR 10,000 EU-wide turnover floor; cross it and you must register for OSS or VAT-register in every destination country.
Picking the registration Member State
A non-EU seller needs an EU-established intermediary for IOSS. The intermediary is jointly and severally liable for the VAT — which is why intermediary fees range from EUR 250 to 1,500 per month. Common choices: Ireland (English-speaking, responsive Revenue), Netherlands (efficient, well-trodden), Malta (cheap but slower). Avoid France and Italy unless you have local counsel — both have idiosyncratic filing portals and slower correspondence.
The Member State of identification is sticky. You cannot move IOSS or OSS registration around the EU more than once every two calendar years (the 'two-year lock'). Pick the wrong one and you are stuck through several VAT return cycles before you can migrate. Ireland Revenue and the Dutch Belastingdienst are the two regulators most consistently described by tax counsel as 'reasonable and reachable'; that matters more than headline registration fees.
What changes in 2026
The 'VAT in the Digital Age' (ViDA) package is rolling out in tranches. From July 2026, marketplace facilitator rules expand to cover platforms enabling short-term accommodation and passenger transport. From January 2027, intra-EU B2B e-invoicing becomes mandatory with near-real-time digital reporting. None of this affects IOSS or OSS directly, but the data your customs broker, marketplace, and OSS filings produce will be cross-matched far more aggressively.
The decision tree
Why this matters operationally, not just legally
Non-compliance now produces customer-facing friction within 30 days. Carriers (DHL, UPS, FedEx) detain non-IOSS parcels at the EU border and charge clearance fees that arrive as nasty surprises on the consumer's doorstep. Marketplace platforms (Amazon EU, Etsy, eBay) automatically deem-supply on behalf of non-EU sellers without IOSS, taking the VAT obligation but also leaving you blind to the consumer relationship. Get IOSS sorted before the next holiday-season ramp.
The cost of being caught out
Member State penalties for unregistered distance sales are calculated on the underlying VAT due, typically multiplied by a fixed surcharge (10–30%) plus interest from the original due date. Germany's Bundeszentralamt für Steuern and France's DGFiP both run analytics teams that match marketplace data feeds against OSS registrations; recent assessments of US sellers have run into six figures for two years of unfiled returns. Voluntary disclosure programmes exist in most Member States and dramatically reduce penalties — but they have to be filed before the regulator opens an investigation.