MTIC and Carousel Fraud Explained | VAT Missing Trader Fraud UK Guide

MTIC fraud has cost the UK Exchequer over £30 billion since the late 1990s. HMRC’s response is aggressive: repayment claims are withheld for months, input tax is denied on Kittel grounds and even businesses with no connection to the fraud itself find themselves drawn into extended verification procedures. This guide explains the mechanics of the fraud, the legal framework HMRC uses and what you must do to protect your business.

How MTIC and carousel fraud works

Missing Trader Intra-Community (MTIC) fraud exploits the way VAT is charged within the EU single market and on cross-border supplies. The mechanics are straightforward, which is precisely why the fraud is so persistent.

The basic missing trader model

A business in another EU member state (the “acquirer” or “importer”) purchases goods zero-rated for VAT purposes. The goods enter the UK and the importer sells them to a UK buyer, charging 20% VAT on the invoice. Rather than accounting for that VAT to HMRC, the importer disappears, the “missing trader”, pocketing the tax. The buyer down the chain has a valid VAT invoice and reclaims the input tax from HMRC. HMRC has received no corresponding output tax payment. The Exchequer is defrauded.

The carousel refinement

In a carousel fraud, the same goods (typically mobile phones, chips or SIM cards in the early iterations) travel around the chain multiple times. Each circuit generates another VAT repayment from HMRC. A single consignment might complete five or six circuits before HMRC detects the pattern, each one extracting more tax. The goods are often fictitious or the same physical stock moved in and out of bonded warehouses.

The broker and the buffer

Between the missing trader and the final exporter (the “broker”, who makes the zero-rated intra-EU dispatch and reclaims the UK input tax) there are typically one or more “buffer” companies. Buffers account for their VAT correctly, pay their tax and are often entirely legitimate businesses. They exist to obscure the connection between the missing trader and the broker. This is why innocent businesses become caught in fraud chains: they are the buffers.

The Kittel principle and ‘knew or should have known’

The Kittel principle originates from the Court of Justice of the European Union (CJEU) decision in Axel Kittel v Belgium; Belgium v Recolta Recycling [2006] ECR I-6161. The court held that where a taxable person knew or should have known, that by its purchase it was participating in a transaction connected with fraudulent evasion of VAT, it is not entitled to deduct input tax. The right to deduct is an integral part of the VAT system and cannot be used as a vehicle for fraud.

In the UK, the principle is applied under the general principles of EU-retained VAT law, confirmed by the Court of Appeal in Mobilx Ltd v HMRC [2010] EWCA Civ 517. The Court of Appeal held that the test is objective: the question is not what the individual trader actually knew, but what the objective facts available to a reasonable trader in that position would have revealed. A trader who shuts its eyes to the obvious fails the test.

What HMRC must establish first

Before Kittel even arises, HMRC must prove that there was a fraudulent tax loss somewhere in the supply chain and that the disputed transactions were connected to it. This is not presumed. HMRC must trace the specific supply chain and identify the specific missing trader or orchestrator. Where HMRC cannot do this, the denial of input tax fails at the first hurdle. Challenges to the quality of HMRC’s chain-tracing evidence often yield significant reductions in the denied amount.

Mecsek-Gabona and other key CJEU authority

Mecsek-Gabona Kft v NAV [2012] EUECJ C-273/11 addressed the position of a seller making an intra-Community supply. The CJEU held that VAT exemption for an intra-Community supply can be refused where the seller knew or should have known, that the declared intra-Community transaction was part of a fraud committed by the acquirer. The case is directly relevant to UK exporters whose customers in EU member states turn out to be fraudulent.

Other key authorities include:

• Optigen Ltd v HMRC [2006] ECR I-483, established that transactions which are themselves lawful cannot be infected by fraud earlier in the chain unless the trader knew or should have known
• FTI Consulting LLP v HMRC [2019] UKUT 119 (TCC), Upper Tribunal guidance on the standard of due diligence expected in the telecoms sector
• Totel Ltd v HMRC [2018] UKSC 44, Supreme Court on the burden of proof in VAT appeals, confirming the taxpayer must discharge the evidential burden on due diligence once HMRC establishes the fraud connection

Sectors at risk

HMRC’s extended verification activity is concentrated in sectors whose commercial characteristics make them attractive for MTIC schemes. If your business operates in any of the following areas, you should maintain comprehensive due diligence records as a matter of routine.

Mobile phones and computer chips

The original MTIC sectors. Billions of pounds were lost through phone and chip carousels in the late 1990s and 2000s. HMRC now has sophisticated pattern-detection tools for these trades, but new variants continue to emerge.

Wholesale alcohol and tobacco

Duty warehousing creates opportunities for supply chains that are opaque to HMRC. Both sectors remain active areas for missing trader fraud, often combined with duty evasion.

Carbon emissions trading

The EU Emissions Trading Scheme was heavily exploited for MTIC fraud between 2008 and 2010, until most member states moved to a reverse charge mechanism. Legacy cases still run through the UK tribunals.

Telecoms minutes

Wholesale VoIP minute trading is a textbook MTIC sector. The “goods” are intangible, cross borders invisibly and the supply chain is often very short. Tribunal decisions in this sector have produced detailed guidance on what due diligence is required.

Scrap metal

The domestic reverse charge that now applies to many scrap metal transactions (VATA 1994, s55A) has reduced the scope for fraud, but pre-reverse-charge transactions continue to generate HMRC assessments and the new rules do not apply universally.

Cryptocurrency and digital assets

An emerging area. The characteristics of crypto markets, pseudonymous counterparties, instant settlement, cross-border movement without physical logistics, make them well suited to MTIC structures. HMRC has begun issuing extended verification notices in this sector.

HMRC’s extended verification procedure

Where HMRC suspects a repayment claim may be connected to fraud, it will place the claim into “extended verification” (EV). During EV, HMRC withholds the repayment while it traces the supply chain, contacts the missing trader’s officer, reviews other traders in the chain and assesses whether Kittel applies.

Extended verification has no fixed statutory time limit. Businesses have experienced EV lasting many months, with significant cash-flow consequences. However, HMRC must act with reasonable expedition. Where EV is unreasonably prolonged, the following remedies are available:

• Formal complaint to HMRC’s Complaints Team , creates a paper trail and applies internal pressure
• Complaint to the Adjudicator’s Office , independent review of HMRC’s conduct
• Judicial review , a claim that HMRC’s failure to make a decision within a reasonable time is unlawful. This is rarely necessary but highly effective when deployed
• Hardship application , under s84(3A) VATA 1994, a business suffering serious financial hardship through withheld repayments can apply to the First-tier Tribunal to have the repayment released pending the appeal

Notice 726 and joint and several liability

VAT Notice 726 (Joint and several liability for unpaid VAT) implements the joint and several liability provisions in section 77A VATA 1994. These provisions apply in the mobile phone and computer chip sectors specifically and allow HMRC to hold a buyer of those goods jointly and severally liable for the unpaid VAT of its supplier where the buyer knew or had reasonable grounds to suspect, that the VAT would not be paid.

Notice 726 sets out what HMRC considers to be the indicators that a business “had reasonable grounds to suspect”: prices significantly below market rates, requests for cash payments, inability to verify the supplier’s VAT registration and deals structured to avoid normal commercial terms. It is not a statutory document but the Tribunal treats it as relevant to what a reasonable business should have done.

Due diligence requirements

There is no single prescribed checklist for due diligence in MTIC cases. What is required is determined by the specific commercial context. However, the Tribunal decisions in this area identify a consistent set of minimum steps that a “reasonable trader” in a high-risk sector would take:

Supplier verification

• Confirm VAT registration number via the HMRC online verification tool (and print/save the confirmation with date and time)
• Confirm Companies House registration, directors and registered office
• Obtain signed terms and conditions including the VAT number
• Obtain trade references and verify them in writing
• Visit the supplier’s premises or, where that is not practicable, obtain photographs and confirm operational capacity

Transaction-level due diligence

• Verify that the price reflects market conditions, document the market comparators
• Confirm the physical existence and identity of the goods where applicable
• Understand the commercial rationale for each deal, why is this supplier selling at this price?
• Check that the invoicing and payment terms are commercially normal
• Do not structure transactions in ways that could indicate back-to-back or pre-arranged deal chains

Ongoing monitoring

• Revisit supplier verification at regular intervals and on the addition of new lines
• Keep records indefinitely, MTIC cases regularly involve periods up to 20 years old
• Document your internal escalation process when a transaction raises a concern

What an innocent business must prove

If you receive an extended verification notice or a formal Kittel denial, you must be able to demonstrate all of the following:

1. You took every reasonable precaution. Your due diligence was proportionate to the sector risk and the size of the transaction. This is measured against what a well-run business in your sector and of your sophistication would have done.
2. You had no means of knowing. The objective facts available to you at the time did not indicate a fraud connection. If warning signs were present but ignored, this element fails.
3. Your responses to any concerns were proportionate. Where something was unusual, you took steps to investigate and satisfied yourself. You did not simply proceed.
4. The commercial rationale was genuine. Your reason for doing the deal stacks up independently of the fraud allegation. A manufactured explanation developed after HMRC raises the point carries little weight.

The evidence must be documentary. A witness statement from a director explaining what due diligence was done, unsupported by contemporary records, is given very limited weight by Tribunals.

Burden of proof

The burden of proof in MTIC cases at the First-tier Tribunal operates in two stages, confirmed by the Supreme Court in Totel Ltd v HMRC [2018] UKSC 44:

1. HMRC bears the burden of establishing the fraud and the connection. HMRC must prove, on the balance of probabilities, that there was a fraudulent tax loss and that the taxpayer’s transactions were connected to it. This is a substantive evidential burden, not merely an assertion.
2. Once HMRC establishes the connection, the burden shifts. The taxpayer must then establish that it did not know and could not reasonably have known of the fraud connection. This requires positive evidence of due diligence, not merely a denial.

Understanding which stage HMRC’s evidence reaches is fundamental to case strategy. Where HMRC’s chain evidence is thin, where the alleged missing trader cannot be positively identified or where the fraud in an overseas jurisdiction is assumed rather than proved, challenging at Stage 1 before any due diligence discussion is often the strongest approach.

Recent FtT and Upper Tribunal case law

MTIC litigation continues to generate significant case law. Key decisions since 2020 include:

• Looksmart Brands Inc v HMRC [2021] UKFTT 313 (TC), First-tier Tribunal on the standard of due diligence expected of a new entrant to a high-risk sector; the Tribunal found the taxpayer had taken reasonable precautions despite a relatively basic due diligence process
• Project Blue Ltd v HMRC [2022] UKUT 251 (TCC), Upper Tribunal guidance on the evidential standard required for HMRC’s chain-tracing at Stage 1
• DHL Supply Chain Ltd v HMRC [2023] UKFTT 156 (TC), whether a freight forwarder owed due diligence obligations in its own right; the Tribunal held that the nature of the service did not import the same obligations as a principal trader

The volume and technical complexity of MTIC litigation means that instruction of a specialist with active tribunal experience is strongly advisable. Generic tax advice is rarely adequate.

Penalties

Where HMRC succeeds in denying input tax on Kittel grounds, it will also typically seek to impose inaccuracy penalties under Schedule 24 Finance Act 2007 (for VAT returns) or failure-to-notify penalties under Schedule 41 Finance Act 2008. See our companion guide to VAT penalties for a full analysis of the penalty regime.

In MTIC cases, the behaviour categorisation (careless, deliberate, deliberate and concealed) is often disputed. HMRC frequently argues that a trader who failed adequate due diligence was at least careless, attracting a minimum 15% penalty after reductions. In more serious cases, HMRC will assert deliberate behaviour, which can produce penalties of 50–70% of the denied tax before reductions. The penalty can itself amount to hundreds of thousands of pounds in a large MTIC case.

Penalty mitigation through quality of disclosure (telling, helping and giving) is available and can reduce the penalty significantly. An unprompted disclosure, made before HMRC has indicated an intention to investigate, attracts the most generous reduction. See the HMRC penalty calculator to estimate your exposure.

How to clear your name

If your business is facing an MTIC allegation, the following steps give the best prospect of a successful outcome:

1. Instruct a specialist immediately. The first formal response to HMRC sets the tone for the entire case. Generic accountancy advice is inadequate; you need a specialist with active MTIC litigation experience.
2. Gather all due diligence records contemporaneously. Pull everything that existed at the time of the transactions: VAT verification printouts, emails, visit notes, trade references, market research. Do not reconstruct; assemble and preserve.
3. Challenge HMRC’s chain evidence early. Request full particulars of the alleged fraud and the connection to your transactions. HMRC must prove both; in many cases their chain tracing is incomplete.
4. Address the cash-flow position. If repayments are withheld, consider a hardship application to the Tribunal. An EV that has run for an unreasonable period should be challenged formally.
5. Consider alternative dispute resolution (ADR). HMRC offers ADR in MTIC cases. It is not always appropriate, but where there is genuine factual uncertainty about the fraud connection it can produce an earlier and less costly resolution than full Tribunal litigation.

Frequently asked questions

Related guides

• VAT investigations: the complete guide
• How to appeal a VAT assessment
• VAT penalties: how HMRC calculates them
• HMRC penalty calculator
• All resources