When Overseas Businesses Must Register for UK VAT

A Shanghai SaaS founder once told us she had been invoicing London customers for nearly two years before her accountant mentioned VAT. She had assumed the UK's £90,000 registration threshold applied to her. It did not. For overseas sellers, the threshold is, in most cases, nothing at all.

The UK VAT system is not unusually complex, but it treats non-resident businesses on a different footing — and the consequences of getting it wrong tend to compound quietly until HMRC writes a letter. This piece sets out the registration triggers that most often catch overseas sellers, how postponed VAT accounting changes the cashflow picture for goods, and where digital marketplaces and intermediaries absorb the obligation on your behalf.

The threshold that does not exist

The familiar UK VAT registration threshold — currently £90,000 of taxable turnover in a rolling twelve-month window — applies to businesses established in the UK. If your company has no fixed establishment in Britain, the threshold for non-resident VAT registration is effectively zero from the first taxable supply.

In practice, this means:

• An overseas company selling goods located in the UK at the point of sale must register before that first sale.
• An overseas company holding stock in a UK warehouse (including Amazon FBA or third-party fulfilment) must register before goods are dispatched from that stock.
• An overseas company supplying certain services to UK consumers — most notably digital services — must register from the first transaction, unless an intermediary handles it (more on this below).

The "establishment" test is not about whether you have a UK bank account or a registered company. It looks at whether you have a fixed place from which the business is actually run, with the human and technical resources to make and receive supplies. A holding company shell, a virtual office, or a UK subsidiary that does not itself make the supplies will usually not qualify the parent as UK-established.

Digital services and the OSS that the UK no longer uses

Since the UK left the EU VAT regime, the single One Stop Shop registration that covers EU digital sales does nothing for British customers. VAT on digital services UK consumers buy — streaming, SaaS subscriptions, e-books, online courses, in-app purchases — is owed to HMRC directly, and there is no de minimis turnover allowance for overseas suppliers.

Two important softenings:

1. B2B supplies are usually outside the scope. Where your customer is a UK VAT-registered business and provides a valid VAT number, the reverse charge typically shifts the obligation to them. Keep evidence of business status on file.
2. Marketplaces and platforms often become the deemed supplier. If you sell through an app store, a major content platform, or a digital marketplace that handles billing, the platform is generally treated as the supplier to the end consumer and accounts for VAT itself. Your supply is then to the platform, not to the UK consumer. Read each platform's tax documentation — the treatment varies.

The risk zone is direct-to-consumer digital sales billed from your own website to UK individuals. That is the configuration that most often requires non-resident VAT registration from day one.

Goods, imports, and postponed VAT accounting

For physical goods, the picture splits at the £135 consignment value line.

• Consignments at or below £135 sold directly to UK consumers: VAT is charged at the point of sale by the overseas seller, who must be UK VAT-registered. If sold through an online marketplace, the marketplace usually accounts for the VAT.
• Consignments above £135: import VAT applies at the border, payable by whoever is the importer of record. This is where postponed VAT accounting matters.

Postponed VAT accounting (PVA) allows a VAT-registered importer to declare and recover import VAT on the same return, rather than paying it at the border and reclaiming it weeks later. For overseas sellers who import into their own UK VAT registration — common for fulfilment models — PVA removes a significant cashflow drag. It is not automatic: you elect to use it on the customs declaration, and you reconcile against the monthly postponed import VAT statement HMRC makes available online.

A few practical points overseas importers tend to miss:

• You need an EORI number beginning with GB to act as importer of record.
• The customs agent or freight forwarder needs explicit instruction to use PVA on each declaration. They will not assume it.
• PVA changes timing, not liability. If the goods are not for onward taxable supply, the input tax may not be fully recoverable.

Intermediaries, agents, and who actually pays

Overseas businesses often assume that appointing a UK fiscal representative is mandatory. For most non-EU sellers registering for UK VAT today, it is not — HMRC's standard position is that a representative is optional, though the agency may require one in specific compliance-risk cases. What matters more in practice is who in the supply chain is treated as the supplier:

• Online marketplaces facilitating sales of goods to UK consumers are often deemed the supplier for VAT purposes, particularly for low-value consignments and for goods already in UK stock sold by overseas sellers.
• Payment platforms are generally not deemed suppliers; they only move money.
• Freight forwarders and customs agents act on your instruction and do not absorb your VAT liability, even when they pay import VAT on your behalf.
• Digital platforms and app stores frequently act as deemed supplier for digital services, but the contractual terms decide the outcome.

The honest answer to "who pays?" is: read the contract, then read the platform's tax notice, then map the supply chain. The label on the invoice often does not match the VAT reality.

A short registration checklist

Before you submit a UK VAT registration, have the following ready:

1. Certificate of incorporation and proof of business address in your home jurisdiction.
2. Identification for directors and beneficial owners.
3. Description of supplies, expected UK turnover, and the date of your first taxable UK supply.
4. UK bank details if available (not strictly required, but it simplifies repayments).
5. A GB EORI number if you will import goods.
6. Records of any UK stock already held and platform accounts already trading.

Registration is online and usually completes within a few weeks, though HMRC's published service times shift. Backdating to the correct effective date matters: penalties and interest run from the date you should have registered, not the date you got around to it.

If the above has surfaced more questions than answers, the cross-border tax and company-formation team at Serene Jade's Enterprise Landing service handles UK VAT registration, EORI applications, and PVA setup as part of a single onboarding workflow.

FAQ

Q: I sell SaaS subscriptions from Shenzhen to UK businesses only. Do I need to register? A: Usually no, provided your UK customers are VAT-registered businesses who self-account under the reverse charge. Collect and store their VAT numbers, and keep evidence the supply is B2B. Sales to UK consumers, even occasional ones, change the analysis.

Q: My goods are stored in an Amazon UK warehouse. Amazon collects VAT — am I covered? A: Partly. The marketplace usually accounts for VAT on the consumer-facing sale, but you still typically need your own UK VAT registration because you hold stock in the UK, and your supply to the marketplace itself sits within the UK VAT system.

Q: Can I use postponed VAT accounting before my VAT number is active? A: No. PVA requires a live UK VAT registration and a GB EORI linked to it. Imports made before registration will incur import VAT payable at the border, and recoverability depends on the date of registration and the use of the goods.

Serene Jade's Enterprise Landing service handles UK VAT registration, EORI, PVA setup and ongoing returns for overseas sellers entering the British market.