Key takeaways

• The HM Revenue & Customs and HM Treasury consultation closes on 18 August 2026.
• No new VAT rule takes effect on 18 August; that is the deadline for consultation responses.
• The proposal concerns business-to-consumer sales of goods made through qualifying online marketplaces by UK-based businesses.
• The lead option would use a £90,000 Minimum Platform Threshold, measured by sales on an individual platform.
• A lower platform threshold and a form of VAT rate relief for smaller businesses are also under consideration.
• Private individuals who are not trading as a business would be outside the proposed extension.
• The treatment of business sales of second-hand goods and sellers using the VAT Flat Rate Scheme remains unresolved.

What has changed in the UK marketplace VAT liability debate?

HMRC and HM Treasury have opened a consultation on extending online marketplace VAT liability to some sales made by UK-established businesses. Under the proposed model, a qualifying marketplace would account for VAT on an affected sale instead of the underlying seller.

The consultation began on 23 June 2026 and closes on 18 August 2026. The government will then review the evidence and publish a formal response. If ministers decide to proceed, HMRC says a technical consultation on draft legislation would follow. Sellers should therefore treat the proposal as a credible direction of travel, not as a completed tax change.

The full scope and consultation questions are available in the official HMRC and HM Treasury consultation.

Which ecommerce sellers could be affected?

The proposal is directly relevant to UK-established businesses selling goods to consumers through an online marketplace. A platform generally needs to do more than publish an advert to meet the relevant marketplace definition: it must facilitate the sale and be involved in setting terms, enabling payment, and ordering or delivery.

Potentially affected businesses include marketplace retailers, private-label brands, wholesalers selling directly to consumers, print-on-demand businesses and some dropshippers. However, the result for a dropshipper depends on facts such as where the business is genuinely established, where the goods are situated at the point of sale and whether the transaction is already covered by the rules for imported consignments.

Sellers who may not be covered by the proposed extension

• Individuals selling unwanted personal possessions without operating a business.
• Business-to-business transactions, because the consultation frames the extension around B2C sales.
• Sales completed through a seller’s own website rather than a qualifying marketplace, although ordinary VAT obligations would continue.
• Marketplace sales below any final Minimum Platform Threshold, if the government adopts a threshold-based exclusion.
• Second-hand goods sold by businesses, if the government ultimately creates a specific exclusion.

None of these outcomes should be assumed until the final policy and legislation are available. Marketplaces may also need stronger checks to distinguish businesses from private sellers, verify where a seller is established and identify whether goods are new or second-hand.

How would the proposed £90,000 platform threshold work?

The government’s lead option is a £90,000 Minimum Platform Threshold. Under that model, marketplace liability would apply when a UK business’s sales on an individual platform exceed the specified amount.

This would not be the same test as the ordinary VAT registration threshold. The general threshold considers a business’s total taxable turnover across its activities. The proposed platform threshold would measure sales on a particular marketplace. A seller must therefore avoid treating the two figures as interchangeable.

The government is also consulting on a threshold below £90,000. That could capture more sales while still excluding many microbusinesses. Another option is to let marketplaces apply VAT to sales below the registration threshold while offering a form of rate relief to eligible UK businesses. Neither the lower threshold nor the relief structure has been settled.

How could marketplace VAT accounting work for registered sellers?

For a VAT-registered UK seller, the current proposal envisages a deemed zero-rated supply from the seller to the marketplace. The marketplace would then charge the applicable VAT rate to the consumer and account for that VAT on its own return.

The proposal would not automatically change the VAT classification of the goods. Standard-rated, reduced-rated and zero-rated products would retain their relevant treatment. The seller would also continue to deal with VAT on sales made through its own website, physical shop or other channels that are not covered by marketplace liability.

VAT-registered businesses would generally retain the ability to recover eligible input tax, subject to the normal rules. In practice, however, accounting systems would need to separate marketplace deemed supplies from direct sales and other revenue. Returns, partial refunds, discounts, marketplace-funded promotions and fulfilment adjustments could all create reconciliation work.

Existing rules already make marketplaces responsible for VAT in specific situations involving overseas sellers and imported goods. Sellers can compare their circumstances with the current HMRC guidance for marketplace sales.

What would UK marketplace VAT liability mean for dropshippers?

The practical impact depends heavily on the fulfilment model. A UK business that owns stock already located in the UK is in a different position from a seller whose supplier sends each order directly from another country.

Goods already in the UK

If a UK-established dropshipping business sells goods that are situated in the UK at the point of sale, its marketplace transactions could fall within the proposed extension. The seller may need to provide the platform with reliable turnover, establishment and product-tax information.

Goods sent directly from outside the UK

Imported orders may already be covered by existing rules. For consignments valued at £135 or less, a qualifying marketplace generally charges and accounts for VAT at the point of sale, subject to exceptions. Consignments above £135 normally enter the standard import VAT and customs process.

The new proposal should not be described as introducing marketplace VAT for every cross-border dropshipping transaction. In many low-value import scenarios, marketplace collection already exists. The relevant question is whether the reform would extend marketplace liability to additional domestic sales associated with UK-established businesses.

Supplier documentation and input VAT

Some dropshippers may voluntarily register for VAT if marketplace VAT is applied to their sales, allowing them to reclaim eligible input VAT. That strategy only works when the business has valid evidence supporting the deduction. Informal supplier receipts, unexplained landed costs or invoices issued to another party may not provide the required audit trail.

Potential benefits and opportunities

A marketplace-led collection system could reduce the pricing advantage enjoyed by businesses that fail to register, underdeclare sales or disappear before paying VAT. Compliant sellers may benefit from more consistent tax treatment across competing listings.

The change could also remove part of the output VAT calculation from a seller’s marketplace workflow. Platforms already hold transaction values, discounts and refund data, so central collection may reduce some errors if marketplaces provide accurate settlement reports and VAT documentation.

Sellers with reliable books, verifiable suppliers and clear channel-level reporting may be better positioned than competitors using fragmented accounts or poor records. Strong compliance could become a practical advantage during platform verification and account reviews.

Disadvantages, costs and margin pressure

The most significant risk for a small business is VAT being applied to marketplace sales even though its overall turnover does not require registration. Unless relief offsets the charge, the seller could absorb some of the cost or increase consumer prices.

VAT-registered sellers may also lose a short-term cashflow benefit. At present, they can hold VAT collected from customers until it is paid through a VAT return. If the marketplace collects the VAT directly, that money will never enter the seller’s bank account.

Other possible costs include:

• reconfiguring accounting software and marketplace integrations;
• reconciling deemed zero-rated supplies with marketplace settlements;
• reviewing pricing, margins and advertising return on ad spend;
• correcting the VAT treatment of refunds, bundles and discounts;
• providing additional identity, establishment and turnover evidence;
• obtaining professional advice for multi-channel or cross-border structures.

Businesses using the VAT Flat Rate Scheme face additional uncertainty. The consultation specifically asks about the consequences for these sellers, but it does not provide a final solution.

The main risks sellers should understand

Changing prices before the rules are final

No implementation date or final threshold exists. Immediate price changes based only on the consultation could damage conversion rates without delivering a compliance benefit.

Confusing incorporation with UK establishment

A UK company registration, virtual office or postal address does not necessarily prove that a business is genuinely established in the UK for VAT purposes. Management, permanent resources and the real place of operation can matter.

Ignoring combined turnover

A seller may remain below a proposed threshold on each platform while exceeding the ordinary VAT registration threshold across all taxable business activity.

Misclassifying private or second-hand sales

Marketplaces may intensify checks designed to distinguish genuine private disposals from business trading. Second-hand businesses should not assume that the Margin Scheme will remain available for every marketplace transaction under the future model.

Applying Great Britain assumptions to Northern Ireland

Northern Ireland has distinct VAT considerations for certain movements of goods involving the European Union. Sellers should wait for detailed territorial and technical rules rather than treating every UK transaction identically.

What dropshippers should do now

1. Confirm that 18 August is a consultation deadline, not a tax commencement date. Do not present the proposal to customers, staff or suppliers as an existing rule.
2. Map turnover by channel. Record sales made through each marketplace, your own website and any offline channel, then compare the total with the ordinary VAT registration threshold.
3. Document where the business and goods are located. Identify where management occurs, where stock sits at the point of sale and who acts as importer.
4. Model several outcomes. Test a £90,000 per-platform threshold, a lower threshold and a scenario in which VAT applies to marketplace sales below the registration threshold.
5. Review supplier evidence. Check whether invoices, import documents and product records support any input VAT you expect to reclaim.
6. Check marketplace settlement data. Ensure your accounting system can separate product revenue, VAT, commissions, refunds, promotions and fulfilment charges.
7. Submit evidence if the proposal materially affects you. Businesses can respond to HMRC and HM Treasury until 18 August 2026.
8. Monitor the formal response. The next meaningful milestones are the consultation outcome, any technical consultation and draft legislation.

Practical marketplace VAT checklist

• Calculate rolling 12-month taxable turnover across the entire business.
• Calculate sales separately for every marketplace.
• Separate B2C, B2B and genuine non-business transactions.
• Identify which goods are in the UK at the point of sale.
• Record the value of imported consignments and who accounts for import VAT.
• Confirm whether the business uses the Flat Rate Scheme or a margin scheme.
• Test the margin impact if VAT is deducted by the platform.
• Review VAT invoices and import evidence received from suppliers.
• Ask marketplaces how settlement and tax reports would support the proposed model.
• Set an alert for the government’s consultation response.

Frequently asked questions

Do new UK marketplace VAT rules start on 18 August 2026?

No. The consultation closes on 18 August 2026. No new rule, commencement date or transitional period has been confirmed.

Would every small marketplace seller have to pay 20% VAT?

Not necessarily. The government is considering a £90,000 per-platform threshold, a lower threshold, possible VAT rate relief and other protections. Goods may also be zero-rated or reduced-rated rather than subject to the standard rate.

Is the proposed £90,000 threshold the same as the VAT registration threshold?

No. The ordinary registration threshold uses total taxable turnover across the business. The proposed Minimum Platform Threshold would measure sales on an individual marketplace.

Would the proposal cover sales from my own Shopify store?

The consultation concerns sales facilitated by qualifying online marketplaces. A merchant’s own website would normally remain under the seller’s existing VAT obligations unless its arrangement meets the statutory marketplace definition.

What if my dropshipping supplier ships directly from outside the UK?

Existing low-value import rules may already require a marketplace to collect VAT. The result depends on consignment value, product location, customer status and who facilitates the transaction.

Would Amazon, eBay and Etsy be affected?

All three were included in the consultation’s stakeholder list, but no platform-specific implementation rules have been published. The final legal definition and each platform’s role will determine the outcome.

What happens to second-hand marketplace sellers?

Private individuals selling unwanted possessions would be outside the proposed extension. The treatment of second-hand goods sold by businesses remains under consideration because of potential conflicts with the Second-hand Margin Scheme.

When will the final marketplace VAT rules be known?

The government will first publish a response to the consultation. If it proceeds, HMRC expects a technical consultation on draft legislation. A final implementation date has not been announced.

Conclusion

The UK marketplace VAT liability proposal could materially change tax collection, cashflow and pricing for ecommerce sellers, but the design is still open. The immediate priority is not to alter prices blindly; it is to understand turnover by platform, verify the location of goods, improve supplier documentation and model how several threshold options would affect margins.

Sellers should treat the consultation’s closure on 18 August 2026 as the end of an evidence-gathering stage. The decisive documents will be the government’s formal response, any technical consultation and the legislation that follows.