EU OSS, IOSS and UK Postponed VAT Accounting: Which Scheme Applies to Your Cross-Border Orders
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Three acronyms, three different problems, and a lot of brands registered for the wrong one. The common mistake is assuming these schemes are alternatives you pick between. They are not. OSS handles cross-border selling inside the EU, IOSS handles low-value goods coming into it, and Postponed VAT Accounting is a UK cash-flow mechanism for goods arriving at the UK border. A brand selling into both markets from a warehouse in one of them can genuinely need all three, and will certainly need more than one.
The short answer: which scheme applies depends on where your stock sits when the order is placed, where the customer is, and what the consignment is worth. Your company's own country matters far less than people expect.
Key takeaways
- OSS covers B2C sales of goods already inside the EU moving between member states.
- IOSS covers B2C imports into the EU in consignments up to €150.
- PVA is a UK scheme that moves import VAT from the border onto your VAT return.
- Moving stock into an EU warehouse creates a local VAT registration obligation that OSS does not remove.
- None of the three cover B2B sales, and none cover EU consignments above €150.
Union OSS: for stock already inside the EU
The One Stop Shop has been running since July 2021. It lets you report cross-border B2C sales across all member states in a single quarterly return filed in one country, instead of filing separately in every country you sell to.
The trigger is a single EU-wide threshold of €10,000 in cross-border B2C sales per calendar year, counted across all member states together rather than per country. Below it, you can charge your home country's VAT rate. Above it, destination-country VAT applies to every sale, and OSS is how most sellers handle the reporting.
Two points cause most of the confusion.
OSS is a reporting simplification, not a registration substitute. If you hold stock in Germany, you need a German VAT registration regardless of OSS, because storing goods in a country creates a taxable presence there. OSS then covers your cross-border sales out of that stock. Domestic sales inside Germany stay on the German return. Brands using Pan-European FBA discover this quickly, since Amazon moves inventory into several countries and each movement creates its own obligation. Our VAT registration glossary entry covers the basics of that.
And UK sellers can use it. The scheme is often described as EU-only, which is true for intra-EU dispatches but misleading about who can register. As Social Commerce Accountants sets out, a UK business dispatching goods from EU stock can use the Union scheme, and the Commission's rules allow it explicitly. What a UK company cannot do is use OSS for goods leaving Great Britain, because those are imports into the EU rather than intra-EU sales.
IOSS: for low-value goods entering the EU
IOSS applies to B2C distance sales of goods imported from outside the EU in consignments with an intrinsic value of €150 or less. You charge the destination country's VAT at checkout, the consignment clears without import VAT being collected again at the border, and you file one monthly return.
The commercial reason to use it is the doorstep problem. Without IOSS, your customer is billed VAT plus a courier handling fee on delivery, which produces refused parcels and refund requests. We covered the mechanics and the intermediary requirement in our guide to what IOSS is and when to use it, and the glossary entry has the short version.
One 2026 wrinkle worth knowing. Since the EU removed the €150 customs duty exemption, low-value consignments now carry a flat duty charge, and IOSS does not cover duty. If you pass that charge to the customer at checkout it becomes part of the sale consideration, which means VAT applies to it as well. The wider effect of that change is in our piece on the end of duty-free parcels.
Postponed VAT Accounting: a UK cash-flow tool
PVA is the odd one out, because it is not a reporting simplification across countries. It is a UK mechanism that changes when you pay import VAT rather than whether you owe it.
Without PVA, import VAT is paid at the border, usually to your courier or freight agent, and reclaimed later on your VAT return. The money leaves your account weeks before it comes back. With PVA, a UK VAT-registered business accounts for the import VAT on its return instead, declaring and reclaiming it in the same period, so for a fully taxable business the cash effect nets to zero.
For an importing brand this is one of the cheapest improvements available, and plenty of businesses still are not using it. It needs your VAT registration number on the customs declaration and the right instruction to your freight agent, and you download monthly statements from HMRC to support the figures. It does not reduce your VAT bill, and it does not apply to customs duty, which is still payable at import.
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Which applies to your order flow
The pattern most growing brands end up with is a combination. Ship small parcels into the EU under IOSS while volumes are low, hold stock in an EU warehouse and use OSS once volumes justify it, register locally wherever inventory physically sits, and run PVA on the UK side. As Flex Logistics notes, the most common error is registering for the wrong scheme because the business model was described loosely, and the fix is always to start from where the goods are rather than from where the company is.
The mix-ups that cost money
Assuming OSS covers imports. It does not. Goods arriving from outside the EU are an import, whatever your OSS status says.
Thinking OSS replaces local registration. Storing goods in a country creates an obligation there. OSS simplifies reporting on top of registrations you still need.
Treating IOSS as a UK-to-UK solution. IOSS is an EU scheme. Goods sold from Great Britain to a Northern Ireland consumer are UK VAT on your UK return.
Forgetting marketplace liability. On many marketplace sales the platform becomes the deemed supplier and handles the VAT itself. Reporting those sales again through your own scheme double-counts them, which is one of the more common errors in a first OSS return. Our FAQ on international VAT and sales tax covers how that interacts with your own obligations.
Protecting your IOSS number badly. Numbers get misused by third parties declaring their own shipments under someone else's registration, leaving the holder with VAT liability for goods they never sold. Share it only with carriers who need it.
Where this ends up for an expanding brand
Every one of these schemes is a reporting mechanism attached to an underlying obligation, and the obligations are what actually scale. A brand selling across six European markets from EU stock holds a registration in each country where goods sit, files an OSS return quarterly, possibly runs IOSS monthly for direct parcels, operates PVA in the UK, and sits on top of EPR registrations, product compliance and an importer of record for each movement of stock.
That is manageable with a good adviser and a tolerance for filing deadlines. It is also the layer that decides how fast a brand can open the next market, because every new country adds registrations rather than simply adding sales. Shipping DDP does not remove any of it, and neither does selling through a marketplace.
eBrands takes that layer on for the brands we operate. Our European entities act as Merchant of Record and Importer of Record, with the registrations, schemes and filings already in place in the markets we sell in, so a brand enters a country without first building a tax function for it. The products, the pricing and the inventory stay yours. If you are currently working out which schemes you need and where, that is a short conversation with our team and usually a shorter list than people fear.
This article is general information rather than tax advice. VAT treatment depends on your specific circumstances, so check your position with a qualified adviser before registering for anything.
Frequently asked questions
What is the difference between OSS and IOSS?
OSS covers B2C sales of goods already inside the EU moving between member states. IOSS covers B2C imports into the EU in consignments valued at €150 or less. Brands holding EU stock generally need OSS; brands shipping parcels in from outside need IOSS.
Can a UK company use OSS?
Yes, for goods dispatched from stock held inside the EU, using the Union scheme. It cannot be used for goods sent from Great Britain to the EU, since those are imports and fall under IOSS or standard import rules.
What is Postponed VAT Accounting?
A UK scheme letting VAT-registered businesses account for import VAT on their VAT return rather than paying it at the border. It improves cash flow and does not change the amount owed, and it does not cover customs duty.
Does OSS mean I do not need VAT registrations in other countries?
No. Storing goods in a country creates an obligation there regardless of OSS. The scheme simplifies reporting on cross-border sales; it does not remove registrations tied to where your inventory sits.
Which scheme applies to orders over €150 shipped into the EU?
Neither IOSS nor OSS. Standard import rules apply, with import VAT and any duty due at the border, and the delivery terms you trade on decide whether you or the customer settles it.
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