Joint and Several Liability for Unpaid VAT
The letter from HMRC names your company as liable for another business’s unpaid VAT. Not your company’s VAT, another entity’s. Somewhere along your supply chain a trading partner has defaulted, and HMRC is invoking joint and several liability (JSL) provisions to recover the shortfall from a company that had no direct involvement in the default.
JSL for VAT is a specific statutory power targeting supply-chain fraud, particularly missing trader intra-community (MTIC) fraud and labour-supply scheme defaults. Innocent parties can be caught where they “knew or should have known” that the supply was connected to VAT evasion. The bar is not negligence; it is constructive knowledge, and it is real.
This page sets out the JSL framework, who can be caught, how to demonstrate you did not know and should not have known, and the practical due-diligence patterns that protect your supply chain from JSL exposure.
In our experience, the businesses caught by JSL assessments are not fraudsters. They are companies that traded normally in sectors HMRC associates with evasion and had gaps in their due-diligence records.
- Understanding Joint and Several Liability for Unpaid VAT
- Who Is Affected by VAT Joint Liability and What Their Responsibilities Are
- Common Triggers and Risk Factors for a VAT JSL Assessment
- Consequences of Non-Compliance With a JSL Assessment
- Strategies to Manage and Reduce VAT JSL Risk
- Appealing a VAT Joint Liability Assessment
- When VAT JSL Forces Insolvency Decisions
- Your Next Step on a VAT Joint Liability Assessment
- VAT Joint and Several Liability FAQs
- Methodology & Disclosure
Understanding Joint and Several Liability for Unpaid VAT
The statutory basis for VAT JSL sits in several overlapping provisions:
- Section 77A, Value Added Tax Act 1994, JSL for goods subject to missing trader fraud (specified goods under secondary legislation: mobile phones, CPUs, certain electronics, precious metals).
- Construction Industry Scheme (CIS) provisions, parallel liability for CIS-linked labour supply.
- Finance Act 2020, Schedule 13 (JSL Notices), broader JSL regime where insolvency has been used to avoid tax.
- Offshore receipts JSL for income tax, narrower but relevant to specific structures.
Under section 77A, the joint liability attaches to a taxable person who “knew or had reasonable grounds to suspect” that VAT on goods supplied would go unpaid further up the chain. The wording is critical, it is not actual knowledge that is required, but reasonable grounds to suspect.
Who Is Affected by VAT Joint Liability and What Their Responsibilities Are
Primary targets of VAT JSL assessments:
- Buffer or broker companies in missing-trader fraud chains, typically the businesses one or two steps from the missing trader itself.
- Labour supply agencies in the construction sector where sub-contractors default on CIS VAT.
- Businesses transacting with connected parties where the related party has HMRC arrears.
- Specific goods traders, mobile phones, CPUs, precious metals, certain electronics (the “specified goods” under section 77A regulations).
Responsibilities once the risk is identified:
- Documented due diligence on trading partners, VAT registration verification, Companies House checks, trading history.
- Commercial reasonableness checks, pricing, volumes, payment terms matching market norms.
- Pattern monitoring, same goods circulating multiple times, implausible margins, frequent changes in supplier structure.
Common Triggers and Risk Factors for a VAT JSL Assessment
The commercial patterns HMRC reads as “reasonable grounds to suspect”:
- Below-market pricing with no commercial explanation.
- Unusual payment flows, third-party payments, circular payments, cash in atypical quantities.
- Unusual logistics, goods circulating back through supply chains, deliveries to unrelated addresses.
- New or unknown counterparties transacting in large volumes quickly.
- Missing supplier records, VAT numbers that do not verify, missing invoices, incomplete trading history.
HMRC does not need to prove your company knew; it needs to show that a reasonable business in the same sector would have suspected. The evidential battleground is usually what due diligence was actually performed and documented by your team at the time of the transactions.
Consequences of Non-Compliance With a JSL Assessment
Where HMRC issues a JSL assessment and the taxpayer does not pay or successfully appeal:
- Full VAT amount becomes recoverable from the jointly liable taxpayer, typically large, because MTIC chains involve substantial sums.
- Interest accrues at HMRC’s published rate.
- Penalties under Schedule 24 of the Finance Act 2007 may apply where the behaviour is careless or deliberate.
- Full HMRC enforcement toolkit, see HMRC Enforcement Action. DRD, distraint, statutory demand, winding-up petition.
- Risk of criminal investigation, particularly for MTIC cases where the “knew or should have known” test reveals actual knowledge.
The sums involved are frequently six or seven figures, because MTIC fraud chains move substantial VAT-able amounts. A JSL assessment can produce immediate cash-flow insolvency in an otherwise solvent business.
Strategies to Manage and Reduce VAT JSL Risk
The due-diligence patterns that defeat JSL assessments:
- Verify VAT registration of every significant supplier and customer through the HMRC VAT validation service. Record the date and result.
- Companies House checks, filing history, incorporation date, director history. Retain screenshots or PDFs.
- Trading history verification, references, reasonable visits to premises, credit reports.
- Commercial reasonableness documentation, why did you choose this supplier, what are the pricing benchmarks, what alternatives were considered.
- Transaction monitoring, unusual patterns flagged internally, investigated, and either resolved or escalated.
- Sector-specific protocols, the construction industry’s CIS-verification tools, mobile phone sector’s HMRC registration schemes.
The documentation itself is the defence. A JSL assessment litigated at the First-tier Tribunal turns on whether your company can demonstrate it conducted the due diligence a reasonable business in the same sector would have done. Contemporaneous records are the evidence. We see directors underestimate this point until they are in front of a tribunal with only memory to rely on.
Appealing a VAT Joint Liability Assessment
Route of appeal:
- Direct appeal to HMRC within 30 days of the assessment notice.
- Statutory review by an independent HMRC officer.
- First-tier Tribunal (Tax Chamber), specialist VAT litigation, often large amounts at stake, specialist counsel required.
Grounds for appeal turn on the “knew or should have known” test. Your documented due diligence, evidence of commercial reasonableness, and clean transaction records defeat the assessment. Gaps in any of these make the defence harder.
When VAT JSL Forces Insolvency Decisions
A six-figure or seven-figure JSL assessment on an otherwise solvent business can produce immediate cash-flow insolvency. If you are facing a disputed assessment while payment is demanded pending appeal, your business may need to take formal-process decisions in parallel. Our licensed IPs have handled exactly this combination, running insolvency modelling alongside tax counsel working the appeal.
Options:
- Administration, statutory moratorium pending appeal resolution.
- CVA, where the assessment is accepted but quantum is to be paid over time.
- CVL, where the assessment is upheld and the business cannot service it.
Your Next Step on a VAT Joint Liability Assessment
Tax counsel fights the appeal; insolvency counsel protects the business while the appeal runs. Both calls are needed, usually on the same day:
- VAT specialist solicitor or tax adviser with JSL experience, to prepare appeal on due-diligence grounds.
- Licensed insolvency practitioner, to model cash-flow impact and formal-process alternatives.
Our licensed IPs and business rescue specialists can assess the cash-flow implications of the JSL assessment, coordinate with VAT counsel, and implement formal process where appropriate. Call us free on 0800 074 6757 for confidential advice.
VAT Joint and Several Liability FAQs
What is the “knew or should have known” test?
The statutory test under section 77A VATA 1994 for VAT JSL. HMRC does not need to prove actual knowledge of fraud; it needs to show that a reasonable business in the same sector, with the same information available, would have had reasonable grounds to suspect that VAT would go unpaid. The defence is evidence of genuine due diligence.
Which goods are covered by JSL under section 77A?
“Specified goods” under secondary legislation, principally mobile phones, CPUs and other computer chips, precious metals, and certain electronic items where MTIC fraud has historically been prevalent. The list is updated by statutory instrument. Traders in these goods face the highest JSL risk and should maintain the most rigorous due-diligence records.
How much VAT can be recovered under JSL?
The full VAT amount on the specific supply chain that went unpaid, potentially the full chain’s VAT, not just the portion attributable to the jointly liable taxpayer. MTIC cases frequently produce six-figure and seven-figure JSL assessments.
How do I defend against a JSL assessment?
Through documented evidence of due diligence contemporaneous with the transactions. VAT verification, Companies House checks, trading history, commercial reasonableness documentation, and transaction monitoring. The tribunal asks what a reasonable business would have done; evidence of what you actually did is the defence.
Is a JSL assessment criminal?
The assessment itself is civil. Criminal exposure arises separately where HMRC identifies actual knowledge of the fraud, in which case cheating the public revenue or fraud by false representation charges can follow. Most JSL cases resolve civilly; a minority where evidence of actual knowledge exists progress to criminal investigation.
Does administration stop JSL enforcement?
Yes. The statutory moratorium under Schedule B1 of the Insolvency Act 1986 halts HMRC enforcement including JSL recovery. Where the assessment is being appealed and cash-flow cannot support interim payment, administration buys the time needed to resolve the appeal without the business collapsing.
Methodology & Disclosure
This guide is written by our editorial team, reviewed by our licensed insolvency practitioners and VAT specialists, and reflects UK VAT joint and several liability law as at the last-reviewed date. Statutory references are drawn from the Value Added Tax Act 1994 (section 77A), Finance Act 2007 (Schedule 24), Finance Act 2020 (Schedule 13), and Insolvency Act 1986.
Company Debt is an insolvency advisory firm. Where JSL assessments reflect underlying insolvency risk, we can act as the licensed Insolvency Practitioner for a CVA, Administration, or CVL under separate engagement. The 0800 number is a free confidential consultation. VAT JSL representation itself requires specialist tax counsel.
