EU VAT OSS & IOSS: The Cross-Border Seller's Guide

A ceramics studio in Ireland sells to customers across Europe: roughly €4,000 to Germany, €3,000 to France, €2,000 to the Netherlands, €1,500 to Belgium. Ten and a half thousand euros of cross-border sales in a year, and the owner is confident no threshold has been crossed — the old German limit alone was €100,000.

The old limits no longer exist. Since July 2021 there is a single EU-wide threshold of €10,000, measured across all member states combined. The studio crossed it around the time it made its last few Belgian sales, and from that point should have been charging German VAT to German customers, French VAT to French customers, and so on — not Irish VAT to everyone.

What changed in 2021, and why it matters now

The old system gave each member state its own distance selling threshold — €35,000 in France, €100,000 in Germany, and various figures elsewhere. A seller tracked twenty-seven running totals and registered locally in each country as it crossed each limit. It was workable for large sellers and effectively impossible for small ones.

The 2021 e-commerce package replaced all of it with two ideas. First, a single low threshold for everyone, which pulls small cross-border sellers into destination taxation almost immediately. Second, a simplified reporting mechanism — OSS — so that being pulled in does not mean twenty-seven registrations.

The trade is deliberate: lower threshold, easier compliance. It is genuinely a better deal for most sellers than the old regime, and the low threshold means far more businesses are in scope than realise it. If you sell physical goods or digital services to EU consumers in more than one country, you are probably in scope.

How the threshold is actually measured

Three details determine whether you have crossed it, and each is regularly misread.

• It aggregates across all member states. Not €10,000 per country — €10,000 for everything cross-border combined. This is the point that catches sellers with modest volumes spread thinly across Europe.
• It covers goods and digital services together. Telecommunications, broadcasting and electronically supplied services count toward the same figure as physical goods. A seller with a small product line and a small digital download business measures both against one limit.
• Domestic sales do not count. Only cross-border B2C supplies to other member states. Your home-country sales sit outside it entirely.

You cross the threshold the moment a sale takes you over, and the rules apply to that sale onward — not from the following quarter or year. That mid-transaction switch is why sellers approaching the line should register before they need to rather than after.

What OSS does and does not simplify

This is where expectations most often diverge from reality, and getting it straight saves a great deal of grief.

The input VAT point deserves emphasis because it drives real decisions. A seller with significant costs in another member state — warehousing in Germany, say, or local marketing spend — may recover VAT more efficiently through a local registration than through the EU refund procedure, and that can outweigh the simplicity of OSS. This is the main legitimate reason to decline OSS.

Worked example: the same order, two ways

A Spanish seller ships a €200 (net) item to a customer in Germany. Spain's standard rate is 21%; Germany's is 19%.

Note the commercial consequence, which is easy to miss: if you price on a VAT-inclusive basis — one shelf price across Europe — your margin now varies by destination, because the VAT component changes with the customer's country. Selling at a flat €242 inclusive means €200.00 net in Spain and €203.36 net in Germany. Across a catalogue and a continent that is a real planning issue, not a rounding artefact.

Rates by country are in the European VAT rates guide, and the reverse VAT calculator will strip the VAT out of an inclusive price at any rate you choose. If the inclusive-versus-exclusive distinction itself is the sticking point, the inc VAT vs ex VAT guide covers it.

IOSS: the import scheme

IOSS solves a different problem. Before 2021 goods imported into the EU with a value under €22 were exempt from import VAT. That exemption is gone — all commercial imports now attract VAT regardless of value.

Without IOSS, that VAT is collected at the border, typically by the carrier, who charges the recipient the VAT plus a handling fee often in the €5–15 range. On a €20 item that fee can exceed the tax, and the customer experiences it as a surprise demand before they can receive something they already paid for. Refusal rates on those parcels are high.

IOSS lets you charge EU VAT at checkout on consignments valued at €150 or less and remit it on a monthly IOSS return. The parcel travels with your IOSS number, clears customs without a VAT stop, and the customer pays nothing further.

Choosing your path

1. Total your cross-border EU B2C sales for the last twelve months. One number, all member states, goods and digital services together. Compare it to €10,000.
2. If you are close, act before you cross. The switch applies from the sale that breaches the threshold, so registering in advance avoids a period of charging the wrong VAT.
3. Assess your foreign input VAT. Material costs incurred in other member states argue for local registration; negligible foreign costs argue strongly for OSS.
4. Separate your B2B flow. Sales to VAT-registered businesses are not OSS transactions — they generally fall under the reverse charge, which means validating customer VAT numbers and invoicing without VAT.
5. Handle imports separately. If you ship into the EU from outside it, IOSS is a distinct decision from OSS, with its own registration and often an intermediary requirement.

Official guidance on both schemes is published by the European Commission's VAT One Stop Shop portal, which is the authoritative source for registration mechanics and member state specifics.

Related tools

• Reverse VAT calculator — extract VAT from an inclusive price at any EU rate.
• Global tax rates — 2026 VAT rates for 30 European countries in one downloadable dataset.
• International VAT calculators — per-country calculators for Germany, France, Spain, Italy and more.
• European VAT rates by country — standard and reduced rates with local names.