UK VAT for online marketplaces is determined by more than the location of the customer. The correct treatment depends on where the goods are situated when the sale takes place, where the seller is established, whether the buyer is a consumer or a VAT-registered business, the value of any imported consignment and the role performed by the marketplace.

That combination is why two apparently identical Amazon sales can produce different VAT outcomes.

An overseas seller dispatching a £40 product directly from China to a UK consumer may find that Amazon collects and accounts for UK VAT. The same seller importing 2,000 units into an Amazon fulfilment centre will remain responsible for import VAT and customs formalities, even though Amazon may account for VAT when individual units are sold to consumers. A Shopify sale from the same stock may then become the seller’s own taxable supply because Shopify will not normally be treated as the supplier for that transaction.

The most common mistake is to assume that marketplace collection removes every UK VAT obligation from the underlying seller. It does not. Marketplace liability primarily determines who accounts for output VAT on a particular sale. It does not automatically resolve import VAT recovery, business-to-business transactions, direct website sales, VAT registration, record keeping or VAT Return reporting.

A reliable VAT position therefore starts with the commercial supply chain rather than the marketplace dashboard.

How UK VAT for online marketplaces works

For goods sold through an online marketplace, VAT liability is normally decided by four questions: where the seller is established, where the goods are located at the time of sale, whether the customer is a business or consumer, and whether an imported consignment is worth more than £135. The marketplace name alone does not determine the answer.

The following summary covers the most common Great Britain transactions:

Transaction	Who normally accounts for sales VAT?	Seller’s likely UK VAT position
Overseas seller, goods already in the UK, sale through a marketplace to a consumer	Online marketplace	Registration may still be needed or commercially beneficial, particularly to recover import VAT
Overseas seller, goods already in the UK, direct sale through its own website	Overseas seller	Registration is normally compulsory from the first taxable UK sale
Goods outside the UK, consignment £135 or less, marketplace sale to a consumer	Online marketplace	Seller may not need registration solely for that transaction
Goods outside the UK, consignment above £135	Normal import VAT and customs rules	Depends on who imports the goods and the contractual delivery terms
Marketplace sale to a UK VAT-registered business	Seller or customer under the applicable B2B procedure	Seller may need UK VAT registration
UK-established seller below the VAT registration threshold	Seller, usually without charging VAT	Turnover across the whole business must still be monitored
UK-established VAT-registered seller	Seller under the current rules	Marketplace reports do not replace VAT Return accounting

This table is a starting point, not a substitute for transaction-level analysis. The seller’s establishment status, customer evidence and movement of goods can change the result.

What HMRC considers an online marketplace

An online marketplace is broadly a website, application, platform or portal that facilitates sales and is involved in setting terms, authorising or facilitating payment, and ordering or delivering the goods. A website merely advertising products or processing one isolated part of a transaction will not necessarily satisfy HMRC’s marketplace definition.

Amazon, eBay and many marketplace-style platforms usually fall within the rules because they do considerably more than display an advertisement. They control elements of the customer journey, process or facilitate payment and participate in ordering or delivery.

A seller’s own Shopify store will usually be analysed differently. Shopify supplies technology, payment and related services, but the merchant commonly remains responsible for the sale to the customer. The merchant sets the price, accepts the customer’s order, controls the product description, determines fulfilment and carries the principal commercial risk. The merchant should not assume that using Shopify Payments turns the website into an online marketplace transaction.

The contractual arrangements matter more than the branding.

This distinction is particularly relevant where a business uses several channels:

• Amazon FBA for UK consumer sales;
• eBay for clearance stock;
• a Shopify website for direct retail orders;
• wholesale sales negotiated by email;
• a fulfilment company supplying goods to all three channels.

The Amazon and eBay consumer sales may be subject to marketplace liability rules. The Shopify and wholesale transactions may remain the seller’s own supplies. A single VAT Return can therefore contain several different VAT treatments for goods drawn from the same warehouse.

Businesses also need to distinguish marketplaces for goods from platforms facilitating services. The special deemed-supplier rules covered here are primarily concerned with goods. A SaaS business, digital service provider, app developer or consultancy cannot automatically apply the same treatment simply because its services are sold through a platform. Place-of-supply rules, digital service rules and agency principles must be considered separately.

Who accounts for VAT when goods are already in the UK?

Where an overseas business sells goods that are located in the UK through an online marketplace to a consumer, the marketplace is generally responsible for accounting for VAT on the customer sale. The overseas seller is treated as making a separate zero-rated deemed supply to the marketplace.

This rule commonly applies to Amazon FBA sellers that have imported stock into a UK fulfilment centre.

Suppose a company established in the United States imports kitchen equipment into an Amazon warehouse in England. When Amazon facilitates a £120 sale to a private UK customer, the transaction is split for VAT purposes:

1. The overseas seller is treated as making a zero-rated supply to Amazon.
2. Amazon is treated as making the retail supply to the customer.
3. Amazon charges and accounts for the applicable UK VAT on the consumer sale.

The marketplace mechanism reduces the risk of an overseas seller collecting UK VAT from consumers and failing to pay it to HMRC. It does not mean the seller has disappeared from the VAT chain.

The seller was still responsible for importing the inventory. It may have paid import VAT and Customs Duty, incurred UK warehousing charges and purchased domestic services. If it wants to recover eligible UK import VAT and input VAT, a UK VAT registration will usually be required. HMRC expressly permits an overseas seller to register where it wishes to recover import VAT on goods brought into the UK and subsequently sold through an online marketplace.

This produces a result that often surprises new sellers: their VAT Returns may regularly show repayments rather than payments.

The seller reports its zero-rated deemed supplies and claims qualifying import VAT and UK input tax. The marketplace separately accounts for output VAT on its deemed retail supply. That repayment position is not inherently suspicious, but HMRC may ask for evidence before releasing substantial or recurring claims.

In practice, the first repayment claim often attracts the greatest scrutiny. HMRC may request:

• purchase invoices for the inventory;
• customs declarations;
• postponed import VAT statements or C79 certificates;
• freight and fulfilment documents;
• marketplace settlement reports;
• evidence that the goods were owned by the applicant;
• proof of payment to suppliers;
• evidence connecting imported stock with UK sales;
• an explanation of the marketplace VAT treatment.

A repayment claim supported only by an Amazon summary report and a freight forwarder’s invoice is frequently inadequate. Import VAT belongs to the person who imported and owned the goods for the purposes of its business. A customs agent placing the wrong entity’s name or EORI details on the import declaration can jeopardise recovery even where the economic cost was ultimately borne by the seller.

Does an overseas marketplace seller have to register for UK VAT?

An overseas seller must register when it makes taxable UK sales for which it is liable. It may apply for exemption where all UK sales are zero-rated deemed supplies through marketplaces to non-business customers, but exemption prevents recovery of import VAT. Registration becomes necessary when the seller makes direct taxable sales or certain sales to VAT-registered businesses.

There is no general £90,000 registration threshold protecting a non-established business that makes taxable supplies in the UK. The domestic threshold applies differently to businesses genuinely established in the UK. An overseas business making its own taxable UK supply can become liable to register from the first such transaction.

The phrase “genuinely established” is crucial.

A foreign-owned company does not become UK-established for VAT simply because it has:

• incorporated a UK limited company;
• purchased a registered office service;
• appointed a UK accountant;
• opened a British bank account;
• obtained a UK telephone number;
• placed goods in a fulfilment centre;
• engaged an independent warehouse or logistics provider.

HMRC looks at where essential management decisions are made and where the business has the permanent human and technical resources required to conduct its taxable activities. A virtual office or fulfilment centre is not normally enough by itself.

This is an area in which sellers sometimes create risk unintentionally. They select “UK business” when opening a marketplace account because they have a UK company number or warehouse address. The marketplace then treats them as UK-established and does not apply overseas-seller VAT rules. Months later, HMRC concludes that management and operational control remained overseas.

The resulting assessment may not be limited to future sales. HMRC can reconstruct historic turnover, assess underdeclared VAT and examine whether the original marketplace information was careless or deliberately inaccurate.

A seller should therefore decide its establishment status before configuring the marketplace account, not after HMRC raises the question.

Where registration is appropriate, the UK VAT registration application should explain the commercial model accurately. HMRC will normally expect a coherent description of the goods, sales channels, stock location, import arrangements, expected turnover and reason for registration.

The £135 rule for goods outside the UK

When goods are outside the UK at the point of sale and a marketplace facilitates a consumer sale in a consignment worth £135 or less, the marketplace normally charges UK VAT at checkout. For consignments above £135, ordinary import VAT and customs procedures apply instead. The threshold is tested against the whole consignment, not each product.

The £135 figure is widely misunderstood.

It is not:

• an annual sales threshold;
• a VAT registration threshold;
• a limit for each item in a multi-item parcel;
• a general exemption from Customs Duty;
• a rule that applies in the same way when stock is already in the UK.

HMRC uses the intrinsic value of the consignment. This is broadly the selling price of the goods, excluding separately identified transport, insurance and certain taxes or charges. Where several products travel together in one parcel, their individual values are added together.

Consider an overseas marketplace seller shipping two products worth £80 each to the same UK customer in one parcel. Neither product individually exceeds £135, but the consignment is worth £160. Normal import procedures may therefore apply.

Splitting one commercial order artificially into several parcels is not a dependable planning method. Customs records, order data, payment information and marketplace reports can show that the parcels form part of the same transaction. The VAT and customs treatment should follow the genuine commercial arrangement.

For consignments above £135, the seller must identify the importer of record and the agreed delivery terms. If the UK customer is required to pay import VAT and duty on arrival, an unexpected carrier demand can produce refused deliveries, poor reviews and returns. If the seller promises a delivered-duty-paid price, it may assume import obligations that create UK VAT registration and recovery considerations.

A marketplace displaying “VAT included” does not by itself prove that all border liabilities have been dealt with. Sellers need to reconcile the checkout treatment with the customs declaration.

Business-to-business marketplace sales

Marketplace VAT rules often change when the customer is a UK VAT-registered business. For qualifying low-value imported goods, the marketplace may not charge VAT where it has obtained and verified the buyer’s VAT number. The business customer then accounts for VAT under the applicable reverse charge or import procedure.

For goods already in the UK, HMRC guidance states that the overseas seller remains responsible for VAT where the buyer provides its UK VAT registration number. The marketplace should pass the relevant customer and transaction details to the seller.

This means a seller cannot classify its entire marketplace turnover as zero-rated deemed supplies merely because the marketplace collected VAT on most consumer orders.

A realistic Amazon account might contain:

• consumer orders on which Amazon accounts for VAT;
• sales to VAT-registered business customers for which the seller accounts for VAT;
• exports from UK stock;
• refunds and replacements;
• promotional discounts;
• orders fulfilled from more than one country.

The VAT Return treatment must follow those transaction categories. A single net settlement figure cannot reveal them reliably.

Business customer status also needs evidence. A customer entering a company name is not enough. The VAT number should be valid and associated with the customer. Where platform reports identify B2B orders, the seller should preserve those reports and reconcile them with invoices and VAT Return entries.

One recurring error is to assume that every “Amazon Business” order is automatically outside marketplace VAT collection. Platform labels and tax calculations should be checked against the underlying invoice. Marketplace settings, invalid customer VAT numbers and corrections can create exceptions.

Why Amazon FBA often creates a UK VAT registration

An overseas Amazon FBA seller normally imports stock into the UK before making retail sales. Although Amazon may account for VAT on consumer sales, the seller remains liable for import VAT and Customs Duty. VAT registration is commonly obtained so eligible import VAT and other UK input tax can be reclaimed.

Amazon FBA is not simply a selling channel. It is a stockholding and logistics model.

Once inventory enters a UK fulfilment centre, several separate events must be considered:

1. The purchase or manufacture of the goods.
2. The export from the country of origin.
3. The UK import.
4. The movement into fulfilment stock.
5. The deemed supply to Amazon when a consumer order occurs.
6. Any B2B sale for which the seller remains liable.
7. Returns, disposals and stock adjustments.
8. Removal or export of unsold inventory.

The correct VAT treatment cannot be derived from the cash received into the seller’s bank account.

Amazon may deduct selling fees, fulfilment charges, storage fees, advertising costs, refunds and reserves before paying the seller. The net deposit is therefore a payment reconciliation figure, not taxable turnover.

For VAT purposes, the seller needs transaction-level reports showing:

• gross selling price;
• VAT collected by Amazon;
• seller’s deemed supply value;
• customer status;
• dispatch country;
• destination country;
• refunds;
• promotional reductions;
• marketplace fees;
• inventory reimbursements.

Experienced advisers also reconcile marketplace quantities against customs imports and fulfilment movements. If a company imported 10,000 units but marketplace data accounts for only 6,000 sales and 500 units of closing stock, the remaining difference requires an explanation. It may represent damaged inventory, warehouse transfers, returns, removals, replacements or missing data.

HMRC repayment reviews often reveal weak stock records before they reveal incorrect VAT rates.

Shopify and direct website sales are different

A business selling through its own Shopify store will usually remain the supplier to the customer and responsible for UK VAT. Marketplace deemed-supplier treatment does not normally apply merely because Shopify hosts the store or processes payment. An overseas business making direct taxable sales from UK-held stock must generally register and account for VAT itself.

This distinction has a direct effect on pricing.

Assume an overseas company holds the same product in a UK warehouse and sells it for £120:

• through Amazon to a consumer, Amazon may account for the £20 VAT included in the price;
• through the company’s Shopify store, the company may have to account for the £20 VAT itself;
• through a wholesale channel, the company may issue a VAT invoice to the business customer.

The economic margin can differ even where the customer-facing price is identical.

A seller operating a mixed-channel model should decide whether prices are VAT-inclusive across all channels. Overseas businesses sometimes advertise the same £120 price everywhere but account for VAT only on direct website sales. They then discover that the Shopify channel produces a lower net margin than the marketplace channel.

Others make the opposite mistake: they treat Amazon consumer sales as their own standard-rated output transactions even though Amazon has already accounted for VAT. That can lead to duplicate payment.

A proper channel map should identify, for every route to market:

• who contracts with the customer;
• who receives the customer’s payment;
• where the goods are at the time of sale;
• who arranges delivery;
• who acts as importer;
• who issues the VAT invoice;
• who processes a refund;
• who is legally responsible for output VAT.

Businesses expanding from Amazon into direct sales should review the VAT position before switching on UK checkout. A focused UK VAT consultation at that stage is usually less costly than correcting months of direct sales after registration should already have taken effect.

Import VAT and postponed VAT accounting

Postponed VAT accounting allows a VAT-registered importer to account for import VAT through its VAT Return rather than paying the amount at the border and reclaiming it later. The importer must obtain monthly postponed import VAT statements and retain them as evidence supporting the input tax claim.

For many marketplace sellers, postponed VAT accounting is primarily a cash-flow mechanism.

Without it, a seller importing £100,000 of standard-rated goods could face a substantial import VAT payment before selling the inventory. It may later reclaim the amount, but the period between payment and recovery can place unnecessary pressure on working capital.

With postponed VAT accounting, the import VAT is generally declared and, subject to normal recovery conditions, reclaimed on the same VAT Return. The accounting entries may offset each other, but they still have to be included correctly.

The procedure fails when the customs declaration is not completed consistently with the VAT registration.

Typical problems include:

• the freight agent uses the supplier’s details instead of the seller’s;
• the wrong VAT number is entered;
• the declaration does not indicate postponed accounting;
• the seller cannot access its monthly statement;
• the import appears in a different month from the company’s internal records;
• the customs value does not reconcile with the commercial invoice;
• the seller claims estimated import VAT without obtaining evidence.

If postponed accounting was not used, recovery will normally depend on the appropriate import VAT certificate, commonly the C79. A courier invoice showing an amount described as “VAT” is not necessarily sufficient evidence of deductible import VAT.

Customs Duty must also be separated from VAT. Duty is generally a cost of the goods and is not reclaimed through the VAT Return. Import VAT may be recoverable where the statutory conditions are satisfied.

The commercial lesson is simple: the VAT adviser, customs agent and fulfilment provider must work from the same entity details. Correcting the VAT Return cannot repair a fundamentally incorrect customs declaration.

How marketplace sales appear on a UK VAT Return

An overseas seller’s VAT Return should distinguish zero-rated deemed supplies, seller-liable B2B transactions, direct sales, imports, recoverable costs, reverse-charge services and adjustments. Marketplace settlement income should never be copied directly into the return without reconciling the underlying transactions.

For UK-stock consumer sales covered by marketplace liability, the overseas seller is treated as making a zero-rated supply to the marketplace. The marketplace accounts for VAT on its deemed supply to the customer. The seller does not normally issue an invoice to the marketplace for the zero-rated deemed supply.

The seller may then reclaim eligible input tax, including import VAT, warehouse costs and professional fees, subject to the normal rules.

The exact VAT Return entries depend on the transaction and software configuration, but the accounting system should preserve the underlying logic. A practical marketplace VAT ledger normally needs separate tax codes for:

• zero-rated deemed marketplace supplies;
• standard-rated seller-liable sales;
• reduced-rated or zero-rated goods;
• direct UK consumer sales;
• exports;
• import VAT under postponed accounting;
• import VAT supported by C79 certificates;
• reverse-charge marketplace services;
• refunds and credit adjustments;
• non-VAT marketplace deductions.

The UK VAT Returns process should include reconciliation to both marketplace reports and the accounting records. Filing software can submit the figures, but it cannot decide whether the source data has been classified correctly.

A common warning sign is a VAT Return showing large input tax repayments but no reported turnover. A seller may believe that because Amazon paid the retail VAT, no sales need to appear anywhere on its own return. The zero-rated deemed supply still forms part of the VAT accounting record.

Another warning sign is turnover equal to the bank deposits received from the marketplace. Deposits are normally net of commissions, advertising, fulfilment charges, reserves and refunds. They rarely represent the correct value for VAT reporting.

VAT on marketplace fees, commissions and advertising

Marketplace commissions, fulfilment fees, advertising charges and subscription costs are separate supplies from the sale of goods. Where a UK business or UK VAT-registered operation receives taxable B2B services from a supplier established outside the UK, the reverse charge will commonly apply, subject to the precise supplier, contractual entity and place-of-supply rules.

The invoice must be examined rather than assumed.

A marketplace group may invoice different services from different legal entities. Selling commission may come from one country, advertising from another and domestic fulfilment services from a UK entity. Some invoices may include UK VAT; others may require reverse-charge accounting.

Under the reverse charge, the recipient generally treats itself as making and receiving the service. HMRC guidance requires the output tax to be reported in Box 1, recoverable input tax in Box 4, and the value in Boxes 6 and 7 where the normal B2B reverse charge applies. Full recovery often produces no net VAT cost, but the reporting entries are still required.

Marketplace sellers frequently omit these entries because no UK VAT appears on the supplier invoice. That is precisely when reverse-charge analysis is needed.

The omission may have no immediate net tax effect for a fully taxable business, but it can still distort VAT Returns and become relevant during an HMRC review. The financial effect can be significant for a partly exempt business or a business with restricted input tax recovery.

Foreign currency creates another layer. Fees may be billed in euros or US dollars while settlement reports operate in sterling. The seller needs a consistent exchange-rate method and should avoid using the bank conversion for some entries and the marketplace conversion for others without a documented policy.

Returns, refunds, discounts and replacements

VAT treatment must follow the commercial correction. Where the seller originally charged VAT and later refunds the customer, the seller may adjust its VAT Return. If the marketplace accounted for the original VAT, the marketplace will normally make the corresponding output VAT adjustment, while the seller adjusts its deemed-supply records and settlement reconciliation.

Returns are more difficult than they appear because three events can occur at different times:

• the customer receives a refund;
• the marketplace adjusts the seller’s account;
• the goods physically return to usable inventory.

Those events may fall in different VAT periods.

A seller should not reduce VAT simply because a customer opened a return request. Nor should it wait for the product to be resold if the marketplace has already issued a completed refund and corrected the sale.

Replacement goods require separate consideration. If the replacement has a different value, HMRC guidance requires an adjustment reflecting that difference.

Promotions also need careful classification. A marketplace-funded discount is not always the same as a seller-funded discount. The customer may pay £90 for goods advertised at £100 while the marketplace reimburses the seller £10. Depending on the arrangement, the seller’s consideration may still be £100.

Other amounts requiring analysis include:

• fulfilment reimbursements for lost inventory;
• compensation for damaged stock;
• chargebacks;
• goodwill credits;
• vouchers;
• platform-funded coupons;
• seller-funded coupons;
• early-review programmes;
• warehouse disposal proceeds.

Not every credit appearing in a marketplace account is consideration for a taxable sale. Equally, not every deduction reduces taxable turnover.

Making Tax Digital and record keeping

UK VAT-registered businesses are generally required to use Making Tax Digital-compatible software and maintain required VAT data digitally unless an exemption applies. VAT records normally need to be retained for at least six years, and marketplace operators also have specific record-keeping obligations relating to facilitated sales.

Making Tax Digital does not mean every business must replace its entire accounting system. It does mean that required VAT data must be maintained digitally and transferred through compatible software using appropriate digital links.

For a marketplace seller, the weakest point is often the path between the platform report and the VAT Return.

A robust process might involve:

1. Downloading transaction-level marketplace data.
2. Preserving the original report unchanged.
3. Importing the data into an accounting or specialist reconciliation system.
4. Applying VAT tax codes according to transaction type.
5. Reconciling to marketplace settlement statements.
6. Reconciling imports to customs evidence.
7. Reviewing exceptions manually.
8. Submitting the VAT Return through compatible software.

Copying a total manually from a marketplace dashboard into bridging software does not create reliable accounting records.

The business should retain more than invoices. Useful evidence includes:

• marketplace transaction and VAT calculation reports;
• customer VAT number information;
• fulfilment and inventory reports;
• settlement statements;
• customs declarations;
• postponed import VAT statements;
• C79 certificates;
• supplier invoices;
• freight documents;
• bank records;
• return and refund reports;
• contracts with marketplaces and fulfilment providers;
• evidence supporting zero-rating or export treatment.

Marketplace data should be archived regularly. Sellers sometimes discover that the platform no longer provides an old report in the same format by the time HMRC opens a review.

An experienced UK VAT agent will normally request the source reports rather than relying solely on figures exported from bookkeeping software. Once transactions have been aggregated incorrectly, the accounting ledger may conceal the evidence needed to repair them.

How HMRC approaches marketplace compliance

HMRC compares seller information, marketplace data, VAT registrations, customs records and delivery evidence. Marketplaces must perform checks on overseas sellers and may be exposed to liability where they knew or should have known that a seller was required to register but failed to comply. Platforms therefore have strong reasons to restrict or remove high-risk accounts.

Sellers sometimes regard marketplace requests for VAT documents as an internal administrative exercise. They are not.

Marketplaces face their own exposure if they allow a non-compliant overseas seller to continue trading. HMRC can issue liability notices and, in relevant circumstances, hold the platform jointly and severally liable for unpaid seller VAT.

That is why marketplaces may suspend an account before HMRC has completed its investigation.

Checks can include:

• whether the VAT number is valid;
• whether the VAT registration name matches the seller account;
• whether the stated country of establishment is credible;
• whether delivery speeds are consistent with the declared stock location;
• whether the business has a genuine UK establishment;
• whether VAT Returns have been filed;
• whether reported turnover appears consistent with marketplace activity.

HMRC specifically recognises that delivery times can indicate that a seller’s declared stock location is wrong. A seller claiming to dispatch every order from Asia while promising next-day UK delivery may be asked to provide further evidence.

During a compliance review, HMRC normally wants to understand the whole supply chain. A well-prepared response explains:

• the legal entity selling the goods;
• the location of management;
• the location of inventory;
• the marketplaces used;
• the direct sales channels used;
• who imports the goods;
• how VAT is calculated;
• how the VAT Returns reconcile to source data;
• how input tax claims are evidenced.

Sending several gigabytes of reports without an explanation is rarely effective. The reviewer needs a clear audit trail from the commercial transaction to the VAT Return.

Where a business fails to comply, HMRC may assess VAT, charge penalties, require security, direct the appointment of a UK VAT representative or notify the marketplace. The commercial consequence can include account suspension as well as tax debt.

Common UK VAT mistakes made by marketplace sellers

Most marketplace VAT problems arise from applying one rule to every transaction. The highest-risk errors involve incorrect establishment status, treating net payouts as turnover, failing to distinguish marketplace and direct sales, reclaiming import VAT without valid evidence, omitting B2B sales and assuming the marketplace has dealt with every VAT obligation.

Treating a UK company as automatically UK-established

A UK incorporation certificate proves where the company was incorporated. It does not prove where the business is managed or whether it has sufficient human and technical resources in the UK.

Overseas management combined with a virtual office and third-party warehouse may still produce non-established status.

Using marketplace payouts as sales

The payout is normally net of multiple deductions. Reporting it as turnover understates sales and can misclassify fees, refunds and reserves.

Paying VAT twice

Some overseas sellers report the gross marketplace consumer sale as their own standard-rated supply even though the marketplace has already accounted for VAT.

The seller should instead identify the zero-rated deemed supply where the statutory conditions are met.

Reporting no sales at all

The opposite error occurs when the seller claims import VAT but excludes the deemed supply from its records and VAT Returns.

Ignoring direct sales

A seller may correctly treat Amazon consumer orders but forget that sales from UK stock through Shopify remain its own taxable supplies.

Reclaiming import VAT belonging to another entity

The commercial invoice, customs declaration, VAT registration and ownership of the inventory must align. Payment of a courier’s invoice does not automatically create a right to deduct import VAT.

Missing business customer transactions

B2B marketplace orders can place the VAT obligation back on the seller or require a reverse-charge procedure. They should not be grouped with consumer marketplace sales.

Omitting reverse charge on platform fees

A marketplace invoice without UK VAT may require reverse-charge entries rather than no VAT treatment.

Applying the £135 rule to each item

The threshold applies to the consignment. Several items shipped together can take the transaction above £135.

Failing to monitor all-channel turnover

A UK-established business must consider taxable turnover across its business, not separately for Amazon, eBay, Shopify and physical sales. The current domestic VAT registration threshold is £90,000.

Filing before the data is complete

Marketplace reports are often revised after month-end. Refunds, reserves and VAT corrections can appear later. A consistent closing procedure is needed so that transactions are not omitted or counted twice.

UK-established sellers and the VAT threshold

Under the current rules, a genuinely UK-established seller normally accounts for VAT on its own marketplace sales once registered. A business must monitor taxable turnover across all sales channels against the £90,000 registration threshold; splitting sales between platforms, bank accounts or related entities does not create a separate threshold for each stream.

The marketplace does not normally take over output VAT merely because a domestic seller uses its platform.

A UK seller below the threshold may trade without registering unless another registration rule applies or it chooses voluntary registration. Once compulsory registration is triggered, it must account for VAT on taxable supplies from the effective date, including marketplace sales.

Turnover should include the value of taxable supplies before marketplace deductions. A restaurant receiving £8,000 from a delivery platform after £2,000 of commission may have generated £10,000 of taxable sales, not £8,000.

Businesses should also be cautious about artificial separation.

Operating one Amazon account through Company A, an eBay account through Company B and a Shopify store as a sole trader does not automatically create three independent businesses. HMRC can examine whether activities have been artificially separated to avoid VAT registration. Common ownership, products, staff, premises, customers, branding and financial control can all be relevant.

As of 30 July 2026, the government is consulting on extending online marketplace VAT liability to certain sales by UK-established businesses. The consultation runs from 23 June to 18 August 2026. These are proposals, not current law, and the existing treatment should continue to be applied unless legislation is enacted.

Northern Ireland requires separate analysis

Northern Ireland remains subject to distinct VAT rules for certain movements and sales of goods involving the EU. The outcome can depend on whether the goods are in Great Britain, Northern Ireland, an EU member state or another country, as well as the seller’s establishment and the customer’s status.

Businesses should not treat “UK VAT” as a single geographical rule when Northern Ireland is involved.

Examples requiring particular care include:

• goods stored in Northern Ireland and sold to Northern Irish consumers;
• goods moved from an EU warehouse to Northern Ireland;
• goods transferred between Great Britain and Northern Ireland;
• sales by non-UK and non-EU sellers through marketplaces;
• business-to-business imports into Northern Ireland;
• Northern Ireland distance sales to EU consumers.

Marketplace reports may identify Northern Ireland through the customer postcode, dispatch location or fulfilment country. Those fields need to be retained during data processing.

A seller planning to use both Great Britain and Northern Ireland fulfilment should obtain advice before moving stock. Correcting the VAT treatment later can involve UK VAT Returns, customs declarations and, in some cases, EU-related reporting.

Penalties and the cost of late correction

Late VAT Returns are subject to a points-based penalty regime, while overdue VAT can attract late-payment penalties and interest. Separate penalties may apply where a return contains an inaccurate VAT treatment or a business failed to notify HMRC that registration was required.

The financial assessment is only one part of the risk.

Marketplace sellers may also face:

• blocked VAT repayments;
• requests for security;
• additional HMRC monitoring;
• marketplace account suspension;
• cash-flow pressure;
• customs delays;
• inability to recover historic import VAT;
• professional costs of reconstructing old data;
• damage to business sale or investment due diligence.

Early correction generally produces a better outcome than waiting for HMRC or the marketplace to identify the discrepancy.

The first task is to quantify the position accurately. This may require rebuilding transaction data by month, separating consumer and business sales, identifying stock location, reconciling customs imports and checking whether the marketplace or seller accounted for output VAT.

A voluntary disclosure should not be submitted until the numbers and legal analysis are defensible. An incomplete first disclosure followed by several revised calculations can reduce confidence in the business’s controls.

Where historic transactions span several marketplaces and direct channels, professional support is usually justified. The cost is often driven less by the VAT calculation than by the work required to rebuild the evidence trail.

A practical VAT framework before entering the UK market

An overseas business should design its VAT and customs model before shipping inventory or enabling UK checkout. The key decisions are the selling entity, establishment status, sales channels, stock location, importer of record, delivery terms, customer type, product VAT rate and method of recovering import VAT.

A practical pre-launch review should answer the following questions.

Which legal entity will own and sell the goods?

The supplier named on purchase orders, marketplace accounts, customs declarations and customer terms should be consistent.

Where will management take place?

Incorporating a UK company may be commercially useful, but establishment status must reflect the real management and operational structure.

Where will the goods be when the customer orders?

Goods held in the UK are treated differently from goods shipped from overseas after the sale.

Will sales be made through marketplaces, directly or both?

The VAT model should cover Amazon, eBay, Shopify, wholesale and any other channel separately.

Who will import the goods?

The importer needs the correct customs registrations, documentation and evidence for import VAT recovery.

Will postponed VAT accounting be used?

The customs agent should receive written instructions and the correct VAT details before the first shipment.

Are any products reduced-rated, zero-rated or exempt?

Marketplace tax codes are not infallible. Product liability should be reviewed, particularly for food, children’s products, medical items, printed material and bundled supplies.

Will the business sell to VAT-registered customers?

B2B orders should be identified and reconciled separately.

How will marketplace reports reach the accounting system?

The reporting process should be tested before the first VAT Return period closes.

Who will respond to HMRC?

An overseas business needs a reliable UK correspondence address and a process for dealing with time-sensitive HMRC enquiries.

VAT Number UK supports overseas businesses with VAT registration, return preparation, import VAT reconciliation and HMRC correspondence. A coordinated UK accounting service is particularly valuable where marketplace activity must be reconciled with customs data, direct website sales and company accounts.

When professional UK VAT advice is justified

Professional advice is usually justified where an overseas seller will hold UK stock, use Amazon FBA, combine marketplace and direct sales, import consignments above £135, sell to business customers, reclaim significant import VAT or correct historic transactions. These situations require judgement across registration, customs evidence, platform data and VAT Return reporting.

A simple marketplace model can often be managed efficiently once it has been structured correctly. The difficulty lies in identifying whether the model is genuinely simple.

Advice should be obtained before trading where:

• the seller’s UK establishment status is uncertain;
• a UK company is managed from overseas;
• goods will be stored in more than one country;
• Amazon FBA and Shopify will use the same inventory;
• the seller will act as importer;
• the customer may be asked to act as importer;
• product VAT rates are unclear;
• marketplace reports contain both B2C and B2B orders;
• significant VAT repayments are expected;
• previous VAT Returns were prepared from net settlements;
• HMRC or a marketplace has requested evidence;
• an account has been suspended because of VAT information.

The role of the adviser is not merely to submit a form. It is to make the legal VAT position agree with the commercial supply chain, customs documentation, marketplace configuration and accounting data.

That alignment is what allows a marketplace seller to scale without creating a larger historic problem each quarter.

Final position

UK VAT for online marketplaces cannot be reduced to the statement that “the platform pays the VAT”. In some transactions the marketplace accounts for output VAT. In others the seller remains responsible. Even where marketplace liability applies, the seller may still need VAT registration, import VAT evidence, digital records, reverse-charge accounting and correctly prepared VAT Returns.

The most reliable sequence is:

1. Establish where the seller genuinely belongs.
2. Identify where the goods are situated at the time of sale.
3. Separate consumer and VAT-registered business customers.
4. Test imported consignments against the £135 limit.
5. Distinguish marketplace sales from direct sales.
6. Confirm who acts as importer.
7. reconcile transaction reports, customs evidence and settlements.
8. Report each category correctly through Making Tax Digital-compatible software.

Businesses that follow this sequence usually find marketplace VAT manageable. Businesses that begin with the bank payout or assume the platform has solved everything often discover the problem only when HMRC delays a repayment, requests historic records or the marketplace restricts the account.

VAT Number UK assists international businesses with UK marketplace VAT, Amazon FBA registrations, import VAT recovery, VAT Returns and HMRC compliance. The objective is not simply to obtain a VAT number, but to build a VAT position that remains accurate as the business adds inventory, channels and UK customers.