The growth of e‑commerce has transformed how goods are bought and sold, but it has also opened new avenues for tax fraud. Under the UK’s current deemed reseller rules introduced in 2021, online marketplaces must collect VAT on sales where the seller is not established in the UK. UK‑established sellers continue to account for their own VAT, benefiting from the £90 000 registration threshold.
Amazon argues that this split system has become a structural weakness because bad actors can use shell companies and falsified documents to look UK‑based and avoid VAT. Independent analysis suggests that up to £3.2 billion of marketplace sales each year may slip through the net.
This article examines Amazon’s VAT proposal to extend deemed reseller rules to all marketplace sales, summarises the potential benefits and challenges, and offers guidance for businesses.
The Current VAT Rules and the Loophole
Under the existing regime, marketplaces are liable for VAT on goods from overseas sellers and consignments worth up to £135. Goods located in the UK and sold by overseas sellers are also covered. HMRC expects marketplaces to determine whether sellers are UK‑established, but it does not share key data, such as PAYE records, with marketplaces.
As a result, platforms rely heavily on documents provided by sellers – which are increasingly forged. Fraudsters break shipments into small consignments and falsely claim to be UK‑established. The National Audit Office noted that there is little risk of penalties for sellers who misrepresent their establishment status, and that over 5 million indicators of shell‑company use have been flagged.
Because marketplaces are only responsible for VAT collection on non‑UK sellers, the system creates a price advantage for dishonest traders. They can undercut compliant UK businesses by up to 20% – the standard VAT rate – because they do not charge VAT. Honest sellers are left to navigate complex place‑of‑establishment checks, while evaders exploit gaps in the rules. HMRC and the marketplaces therefore remain “one step behind” evolving fraud tactics.
Amazon’s Proposal: A Universal Marketplace Facilitator VAT Model
To close the loophole, Amazon proposes that marketplaces should collect VAT on all third‑party sales, regardless of whether the seller is based in the UK or overseas.
Under this marketplace facilitator VAT model, platforms would be responsible for calculating, charging and remitting VAT on every sale. Amazon estimates that the change could raise up to £700 million in additional revenue each year: around £541 million from sellers who should already be VAT‑registered and £160 million from currently unregistered sellers.
Advocates note that similar regimes already exist elsewhere. Since 2021, Amazon has collected over £6 billion in VAT on sales by overseas sellers. The United States has marketplace facilitator rules in 46 states, and Switzerland adopted comparable rules in January 2025, with little controversy. The EU’s VAT in the Digital Age package also envisages extending deemed reseller rules to more goods and services.
Potential Benefits of Market Facilitator VAT Model
Designing out fraud:
Making marketplaces collect VAT for all sellers removes the incentive to masquerade as UK‑based. Fraudsters could no longer avoid VAT by changing their apparent establishment status. HMRC would deal with a handful of large platforms rather than pursuing thousands of individual sellers.
Revenue gains:
Independent analysis suggests that non‑compliance currently deprives the Exchequer of billions in VAT. Amazon’s VAT proposal puts the potential revenue uplift at £700 million per year, which could help fund public services.
Level playing field:
Compliant businesses no longer face a 20% price disadvantage. Honest small businesses would be able to compete with overseas sellers on fair terms. Extending deemed reseller rules to UK‑established sellers was one of the measures recommended by the Retailers Against VAT Abuse Schemes (RAVAS) to stop abusive behaviour and protect law‑abiding businesses.
Simplified compliance for some SMEs:
For sellers that operate only through a marketplace, VAT accounting could be handled by the platform. Many micro‑businesses would no longer need to calculate output VAT or worry about registering for VAT once they cross the threshold.
Design Challenges and Risks
Despite its appeal, the universal marketplace facilitator model raises significant issues that need careful policy design:
Impact on micro‑businesses:
The current £90 000 registration threshold allows small traders and hobby sellers to operate VAT‑free. A universal deemed supplier regime would effectively extract VAT on all marketplace sales, even when the seller is below the threshold. This could wipe out the profit margin for low‑turnover businesses and force some to exit marketplaces.
Pricing and inflationary effects:
Marketplaces would need to enforce VAT‑inclusive pricing. Sellers receiving only VAT‑exclusive amounts may raise their listed prices to maintain margins, while platforms might adjust fees to cover new compliance costs. The combined effect could push up consumer prices.
Channel distortion:
Sellers below the threshold could still make VAT‑free sales through their own websites, creating a two‑tier pricing structure. This may encourage migration from marketplaces to direct channels such as Shopify or social commerce platforms.
Administrative complexity:
The reform shifts rather than eliminates complexity. Businesses selling both on marketplaces and directly would have to manage split compliance – traditional VAT accounting for direct sales and separate marketplace accounting for platform sales. For marketplaces, handling VAT on all domestic sales would entail new systems for rate determination, discounts, vouchers and multi‑component pricing.
Flat rate and margin schemes:
Sellers using the VAT flat rate or second‑hand margin schemes would need to reconcile the VAT collected by the marketplace with the VAT actually due. The platform would charge standard‑rate VAT on sales, and the seller would later apply the appropriate percentage or margin in their VAT return.
Cash‑flow implications:
VAT‑registered businesses that sell mainly through marketplaces could become repayment traders. The platform would remit the output VAT, but the seller would still file VAT returns to reclaim input VAT. Amazon’s modelling suggests the number of repayment traders could rise by 12%, with repayments increasing by around 6%, adding cash‑flow pressure.
What Needs Further Consideration
Policy‑makers and tax advisers need to address several unresolved questions:
Treatment of sub‑threshold sellers:
Should micro‑businesses under the £90 000 threshold be exempted from marketplace VAT collection? A clear carve‑out mechanism is necessary so that platforms can identify sellers who remain outside the VAT net. Without this, small hobby sellers could be pushed out of the market.
Dual‑channel compliance:
Sellers using both marketplaces and their own websites will face split accounting. Guidance and software tools will be needed to help them manage two sets of VAT records.
Interaction with special schemes:
Clarifying how flat rate, second‑hand margin and other schemes apply when a marketplace has already collected VAT is essential to avoid overpayment or underpayment.
Data sharing and verification:
The NAO highlighted that marketplaces lack access to HMRC data, making it hard to verify seller status. Stronger data‑sharing arrangements and centralised verification could help ensure that only genuine UK‑established businesses are treated as such.
Transitional arrangements:
Introducing a universal deemed reseller regime would require significant system changes for marketplaces and sellers. Adequate lead time and consultation are critical to avoid disruption.
How We Help Online Sellers in UK
At Apex Accountants, we support e‑commerce businesses and marketplace sellers with VAT compliance and strategic tax planning. Our services include:
- VAT registration and returns: We advise when a seller must register for VAT and handle registration and ongoing filings. We can also assist with One Stop Shop (OSS) registrations for cross‑border EU sales.
- Marketplace VAT compliance: Whether under current rules or future marketplace facilitator regimes, we help sellers understand their obligations. We assist with record‑keeping, reconciliations and dealing with marketplace statements.
- Flat rate and margin schemes: If you trade in second‑hand goods or prefer the flat rate scheme, we calculate the correct VAT due and reconcile it with any VAT collected by platforms.
- Customs and import VAT: For sellers importing goods, we manage import VAT, duty classification and the postponed VAT accounting method. We ensure that you reclaim input VAT correctly.
- Digital commerce strategy: We provide guidance on pricing, cash‑flow planning and the impact of potential rule changes. Our team monitors policy developments so that clients can adapt swiftly.
Conclusion
Extending the deemed reseller rules to all marketplace sellers is a bold proposal aimed at tackling VAT fraud and levelling the playing field. There is strong evidence that the current two‑tier regime is being exploited by bad actors, with billions in sales evading VAT. Making marketplaces responsible for VAT on every sale could raise substantial revenue and remove incentives for fraud. However, the policy would shift significant compliance burdens onto platforms and could have unintended consequences for micro‑businesses, pricing and competition. Policymakers must balance the goals of closing loopholes with protecting small traders and preserving a diverse digital marketplace. Businesses should stay informed and seek professional advice to navigate both current obligations and potential future changes.
FAQs on Extended Deemed Reseller Rules in UK
What are deemed reseller rules?
Deemed reseller rules make an online marketplace responsible for charging and remitting VAT on certain sales. In the UK, the rules currently apply to goods sold by overseas sellers or consignments up to £135. The marketplace acts as if it bought and sold the goods, collecting VAT from the customer and passing it to HMRC.
Why is Amazon calling for the rules to be extended?
Amazon argues that the split system, where marketplaces collect VAT only for overseas sellers, has created a loophole that fraudsters exploit. Some sellers falsely claim to be UK‑established to avoid VAT, leading to an estimated £3.2 billion in untaxed sales each year. Extending the rules to all sellers would remove the incentive to misrepresent establishment status.
Would the change force small businesses below the £90 000 threshold to pay VAT?
Yes, if implemented without an exemption. A universal marketplace facilitator model would extract VAT on all marketplace sales, regardless of a seller’s turnover. Policymakers could design a carve‑out to exclude micro‑businesses, but details have not yet been proposed.
I sell on both Amazon and my own website. How would split compliance work?
You would need to keep separate VAT records. Marketplace sales would be VAT‑inclusive and collected by the platform, while direct sales would require you to charge and account for VAT if you are VAT‑registered. Good bookkeeping software and professional advice can help manage dual reporting.
Will I still need to file VAT returns if the marketplace collects VAT?
Yes. VAT‑registered sellers must continue to file returns to reclaim input VAT on their expenses. If most of your sales are through marketplaces, you may become a repayment trader – receiving VAT refunds instead of paying VAT – which can create cash‑flow issues.
What happens to sellers using the flat rate or margin schemes?
Platforms would likely collect VAT at the standard rate on marketplace sales. Sellers using special schemes would need to ‘true up’ the VAT by applying the relevant flat‑rate percentage or margin rules in their VAT return.
Are similar marketplace VAT rules used in other countries?
Yes. The United States has marketplace facilitator laws in most states. Switzerland introduced similar rules on 1 January 2025, and the EU is reviewing an extension as part of its VAT in the Digital Age reforms. These regimes show that broad marketplace VAT collection is workable, although each jurisdiction has its own thresholds and exemptions.
When might the UK implement a universal marketplace facilitator regime?
As of November 2025, the UK government is reviewing e‑commerce VAT rules. Amazon and other stakeholders hope the measure will be considered in the forthcoming Budget, but no definitive timetable has been announced. Businesses should monitor policy developments and prepare for consultation.