Limited liability is one of the founding principles of company law – shareholders and directors are not personally responsible for the debts of the company. But that principle is not absolute. HMRC has specific statutory powers to hold directors personally accountable for certain unpaid tax debts, and those powers are being used with increasing frequency.
The General Rule: Limited Liability
When a company is incorporated, it becomes a separate legal person in its own right. The company – not its directors or shareholders – is responsible for its own debts. This is the principle established in Salomon v Salomon & Co Ltd [1897] AC 22 and it remains the bedrock of English company law.
As a result, if a company becomes insolvent and cannot pay its tax liabilities, HMRC would ordinarily have to stand in line as a creditor along with everyone else. The personal assets of the director – their home, savings and investments – are generally beyond HMRC’s reach.
However, Parliament has created several routes by which HMRC can pursue directors personally, most notably through the Personal Liability Notice regime.
Personal Liability Notices: The Core Mechanism
A Personal Liability Notice (PLN) is a statutory demand issued by HMRC that makes a company officer personally liable for unpaid National Insurance Contributions (NICs). The power to issue PLNs was introduced by the Social Security Act 1998, which inserted section 121C into the Social Security Administration Act 1992.
A PLN can be issued where HMRC concludes that the company’s failure to pay NICs was attributable to the fraud or neglect of one or more of its officers. Unlike a liquidator’s fraudulent or wrongful trading claim, HMRC does not need to go to court first – they can simply issue the notice and demand payment.
PLNs can cover:
- Class 1 NICs (employer and employee contributions) that should have been deducted from wages and paid to HMRC
- Class 1A NICs on benefits in kind reported on P11D forms
- Class 1B NICs under a PAYE Settlement Agreement
- Interest accrued on all unpaid contributions
- Penalties imposed in connection with the non-payment
The total amount recoverable via a PLN can be very substantial, particularly where contributions have been unpaid for a number of years before the company’s insolvency.
Who Can Be Targeted?
HMRC can issue a PLN to any person who was a company officer at the time the NICs became due and payable. This includes:
- Executive and non-executive directors – being non-executive does not automatically protect you, particularly if you were aware of the failure to pay
- Company secretaries – where they had meaningful involvement in the company’s financial management
- Senior managers – individuals who exercised significant control over the company’s finances without being formally appointed as directors
- Shadow directors – people whose instructions the formally appointed directors were accustomed to following
Critically, HMRC must show that the non-payment was attributable to the specific officer’s fraud or neglect. Simply being a director at the relevant time is not enough. HMRC must demonstrate that you personally contributed to the failure to pay through your own conduct.
What Counts as Fraud or Neglect?
These are the two gateways into PLN liability, and they are not interchangeable.
Fraud in this context means deliberate and dishonest conduct – for example, diverting company funds to pay other creditors (or yourself) while knowingly leaving NICs unpaid or falsifying payroll records to conceal the true liability.
Neglect is a lower threshold. It means a failure to take the care that a reasonably prudent person in the officer’s position would have taken. This can include:
- Failing to ensure that NIC liabilities were being correctly calculated and paid over
- Ignoring persistent warnings from payroll staff, accountants or HMRC itself
- Taking no steps to address a known NIC debt despite having the means to do so
- Delegating payroll responsibilities without adequate oversight or supervision
Whether conduct amounts to neglect is often heavily disputed. The key question is what a director in your position knew or ought to have known and what a reasonable person with that knowledge would have done differently.
PLNs and Company Liquidation
The vast majority of PLN cases arise in the context of insolvency. When a company enters administration or liquidation, its NIC liabilities will often be among the debts it cannot meet. HMRC’s PLN team will then examine who was responsible for the company’s financial affairs and whether a PLN can be issued against them.
It is important to understand that the company’s insolvency does not protect its directors from PLNs. HMRC can and does issue PLNs against directors of companies that have been dissolved or liquidated, sometimes years after the event.
If your company is currently facing financial difficulty or if you are considering liquidation, specialist advice at the earliest stage can materially affect your personal exposure. Decisions made during the run-up to insolvency – including which creditors to pay – will be scrutinised closely by HMRC if a PLN investigation follows.
Other Routes to Personal Liability
PLNs are the primary mechanism, but they are not the only way HMRC can pursue directors personally. Other routes include:
Director Disqualification and Tax Debt
Under the Company Directors Disqualification Act 1986, HMRC can apply to the court for a director to be disqualified if their conduct in relation to a company’s tax affairs makes them unfit to be concerned in the management of a company. Disqualification does not in itself create personal liability for the tax debt, but it signals that HMRC considers the director’s conduct to be seriously culpable.
COP9 and the Contractual Disclosure Facility
Where HMRC suspects that a director has been personally involved in tax fraud – not just negligent in their oversight of the company – they may open a Code of Practice 9 (COP9) investigation. This is HMRC’s most serious civil investigation procedure, reserved for cases where fraud is suspected.
Under COP9, the director is offered the opportunity to make a full disclosure of all tax irregularities through the Contractual Disclosure Facility (CDF). In exchange, HMRC will not pursue a criminal prosecution. However, accepting the offer requires an admission that fraud has taken place, and the financial consequences can be severe.
Section 455 CTA 2010: Loans to Participators
Directors who are also shareholders of close companies should also be aware of the section 455 charge. If a director-shareholder takes a loan from the company that remains outstanding nine months after the end of the accounting period, the company must pay a tax charge equal to 33.75% of the outstanding amount. If the company cannot meet this charge, HMRC may seek to recover it from the director personally through other routes.
How to Challenge a Personal Liability Notice
HMRC’s Burden of Proof
A critical but often overlooked point: the burden of proof in PLN proceedings rests on HMRC, not on the director. HMRC must establish, on the civil standard (balance of probabilities), that the company’s failure to pay NICs was attributable to the specific officer’s fraud or neglect.
The Upper Tribunal confirmed in Martland v HMRC [2018] UKUT 178 (TCC) that where deliberate conduct is alleged, HMRC must prove subjective intent; objective recklessness alone is insufficient to meet the threshold. A director who made poor decisions or who delegated too readily, may well have been careless, but “neglect” in the PLN context requires more than bad judgment: it requires a failure to take the care a reasonably prudent person in the officer’s position would have taken. Where HMRC’s evidence is circumstantial or inferential, challenging the sufficiency of that evidence is a productive line of attack.
Recent Authority: 3KH Ltd [2025] UKFTT 748 (TC)
In 3KH Ltd and others v HMRC [2025] UKFTT 748 (TC), decided in June 2025, the First-tier Tribunal upheld both VAT and corporation tax assessments and associated PLNs against the company directors. The Tribunal was satisfied that the directors had acted dishonestly in suppressing sales and overclaiming input tax. The case confirms that where HMRC can demonstrate a clear evidential picture of dishonest conduct, PLNs will be upheld. It underscores the importance of building a strong factual defence at the representations stage, before proceedings reach the Tribunal.
Grounds for Appeal
If HMRC issues a PLN against you, you have the right to appeal to the First-tier Tribunal (Tax Chamber) within 30 days. Grounds for a successful appeal typically include:
- You were not an officer at the relevant time – perhaps you had already resigned as a director before the NIC liabilities crystallised
- The non-payment was not attributable to your fraud or neglect – perhaps someone else had day-to-day control of the finances and you had no meaningful knowledge of the failure to pay
- The amount in the PLN is wrong – the underlying NIC calculation may be challengeable, particularly if it is based on estimates rather than actual payroll records
- HMRC did not follow the correct procedure – HMRC is required to give you the opportunity to make representations before issuing a PLN; failure to do so may vitiate the notice
- HMRC has not met its burden of proof – where the evidence of fraud or neglect is thin, an experienced adviser can challenge whether HMRC has established the necessary facts on the balance of probabilities
Before getting to a tribunal, it is always worth seeking to resolve the matter through representations. HMRC’s PLN team is based in London and handles cases across the whole country. They are experienced negotiators, but will respond to well-prepared legal arguments, particularly where the evidence of neglect or fraud is not clear-cut.
Your Procedural Rights
Tax penalties, including PLNs, engage Article 6 of the European Convention on Human Rights, which guarantees the right to a fair hearing (see Jussila v Finland [2009] ECHR). This means you are entitled to proper disclosure of HMRC’s evidence, an opportunity to challenge that evidence and a fair decision-making process. If HMRC fails to follow its own procedures or denies you a meaningful opportunity to respond, those procedural failures can be raised as independent grounds of challenge.
What Directors Should Do Now
Whether you are concerned about a company currently in difficulty or have already received correspondence from HMRC, the key steps are the same:
- Do not ignore HMRC correspondence – a failure to engage will be treated as an admission and will reduce your options significantly
- Seek specialist advice immediately – PLN investigations are handled by a dedicated team within HMRC who are experienced in this area; you need representation that matches their expertise
- Preserve all company records – board minutes, financial accounts, payroll records and correspondence will all be relevant if you need to demonstrate that you were not personally responsible for the NIC failure
- Consider making representations before a PLN is issued – HMRC must invite representations before issuing a PLN; this is your best opportunity to prevent the notice from being issued at all
- Prepare an appeal strategy in parallel – even while making representations, your adviser should be preparing the arguments that would support a tribunal appeal if HMRC proceeds
A PLN can make you personally responsible for debts that were the company’s liability, potentially running to hundreds of thousands of pounds. With the right representation, however, many PLNs can be challenged successfully or negotiated down. The earlier you seek advice, the more options you have.
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