Amazon Pan-EU FBA: why OSS is not enough and where you still need a local VAT number (2026)

You read up on EU VAT, you set up the One Stop Shop, you filed one tidy quarterly return — and you thought the cross-border VAT problem was solved. Then you switched on Amazon’s Pan-EU FBA, and a few months later a letter arrived asking why you have stock sitting in a German warehouse without a German VAT number. This is the gap nobody flags when you click “enable”.

The promise of Pan-EU FBA

Pan-EU FBA is genuinely attractive. You send stock to Amazon, and Amazon distributes it across fulfilment centres in several countries so that buyers everywhere get fast, local delivery. You pay local-fulfilment fees instead of cross-border ones, your listings show as Prime in more markets, and you do none of the warehousing yourself. For a one-person business it looks like instant European reach with zero logistics work.

The catch is not in the fulfilment. It is in the word storing.

The rule that catches solo sellers: storing stock creates a registration

Here is the principle that quietly undoes the “OSS solved it” assumption: holding your own stock in a country is, on its own, an event that creates a local VAT registration obligation in that country. It does not matter that you are a tiny solo seller, and it does not matter whether you have sold anything there yet. The moment your goods are physically stored in a member state, that state generally expects you to be VAT-registered locally.

That registration then covers two things: the act of holding the inventory, and the domestic sales you make from that local stock to buyers in the same country. Those domestic sales are not cross-border, so they fall outside OSS — they belong on the local return.

Why OSS does not remove it

OSS is brilliant at exactly one job: it lets you report cross-border B2C distance sales across the whole EU on a single return, charging each buyer their own country’s rate. (If that mechanism is new to you, start with EU VAT & OSS explained.)

But OSS was never designed to cover a physical presence. The simplified single-EU distance-sales threshold of €10,000/year and the OSS return both deal with selling across a border. They say nothing about keeping stock in another country. So the two systems sit side by side:

• OSS handles your cross-border sales VAT — one return for the lot.
• A local VAT registration handles the stock you hold there, plus any domestic sales shipped from that stock.

Pan-EU FBA needs both, because it does both: it sells across borders and it parks your inventory in multiple countries. For a deeper look at how this fits the wider marketplace picture, see VAT for Amazon/Etsy/POD sellers.

The typical country set — and the multiplier effect

When Amazon distributes Pan-EU inventory, the set of storage countries commonly includes Germany, France, Italy, Spain, Poland and Czechia. Each country where your goods physically sit can trigger its own local VAT registration.

That is the hidden admin cost. A single solo seller can end up with OSS plus several local VAT numbers at once — each with its own registration, its own periodic returns, its own deadlines and its own language of correspondence. The convenience of one fulfilment programme can quietly become six tax relationships.

The trade-off: speed versus registration count

You are not forced into the full Pan-EU spread. Amazon offers ways to control where your stock lives:

• Pan-EU FBA — Amazon stores stock across the full country set. Fastest delivery, best Prime coverage, most local registrations.
• European Fulfilment Network (EFN) — your stock stays in one country and Amazon ships cross-border from there. Slower delivery, but potentially a single storage country to register in.
• Multi-Country Inventory (MCI) — you choose specific countries to store in, sizing your registration count deliberately.

Neither EFN nor MCI is “better” in the abstract. Limiting storage cuts your compliance footprint but lengthens delivery times and can affect your Buy Box and conversion in distant markets. Spreading storage maximises speed and sales but multiplies the paperwork. The right answer depends on your margins, your volumes, and how much admin you are willing to carry as a one-person business. Decide it on purpose, not by accident the day you click “enable Pan-EU”.

Tooling and help

The local-registration side is the part you should not improvise. Realistically you want two things:

1. A VAT specialist or filing service that can register you in each storage country and file the local returns — many specialise in exactly the multi-country FBA case.
2. Accounting software that separates your OSS sales from your domestic-from-local-stock sales cleanly, so the numbers going onto each return are right. See best accounting software for solopreneurs (Europe) for tools that handle multi-country output.

If you are weighing the whole FBA route, the e-commerce sellers hub collects the related pieces — registration, fulfilment models and marketplace VAT — in one place.

The takeaway

• OSS ≠ done. OSS covers cross-border sales VAT only; it does not cover holding stock abroad.
• Storing stock = a local VAT registration in that country, on top of OSS.
• Pan-EU FBA stores in several countries — typically a set like Germany, France, Italy, Spain, Poland and Czechia — so you can need OSS plus multiple local VAT numbers at once.
• You can trade speed for simplicity with EFN or MCI to limit storage and cut registrations — slower delivery is the price.
• Verify before enabling: confirm the current Amazon Pan-EU country set and your obligations with a VAT specialist, because both the programme and the rules (ViDA from 2028) change.

Part of the complete EU admin guide for solopreneurs.