An HMRC Personal Liability Notice (PLN) is a formal notice that makes a company director personally responsible for unpaid National Insurance contributions (NIC), where HMRC decides the non-payment was caused by that director's fraud or neglect. It moves the debt out of the company and onto the individual named on the notice. This guide explains when HMRC can issue one, how the fraud-or-neglect test works, and what a director can do next.
A PLN is unusual. Most company debts, including most tax debts, stay with the company even in insolvency, protected by the "corporate veil" — the separation between a company and the people who run it. A Personal Liability Notice is one of the narrow routes that lets HMRC step through that separation.
What an HMRC Personal Liability Notice is
A Personal Liability Notice is a written decision from HMRC stating that a named director, or other company officer, is personally liable for a specific amount of the company's unpaid Class 1 National Insurance. The notice sets out the sum HMRC says is due and the period it covers.
HMRC's power to issue a PLN comes from section 121C of the Social Security Administration Act 1992, alongside the Social Security (Contributions) Regulations 2001. The notice is separate from any winding-up action against the company — a director can receive a PLN whether or not the company is being formally wound up.
Once issued, the amount on the notice becomes a personal debt. HMRC can pursue the director for it directly, through the same collection and enforcement routes used for any other individual tax debt.
The debts a PLN can cover (unpaid NIC)
A Personal Liability Notice is specifically for unpaid employer's and employee's Class 1 National Insurance contributions that the company deducted from staff pay, or should have deducted and paid over, but did not. It does not cover every kind of company tax debt.
- It applies to Class 1 NIC — the contributions collected through PAYE alongside income tax.
- It does not, in itself, cover unpaid VAT or unpaid PAYE income tax — HMRC has separate mechanisms for pursuing directors over those, with their own tests.
- It can also cover related interest and, in some cases, penalties connected to the unpaid NIC.
Directors sometimes assume any HMRC company debt could become a PLN. That is not right — the notice is a targeted tool, not a general power to make directors pay all of a company's tax arrears.
The test: fraud or neglect by a director
HMRC cannot issue a Personal Liability Notice simply because a company failed to pay NIC. The law requires HMRC to show that the non-payment is attributable to fraud or neglect on the part of the individual director.
In practice, this usually means HMRC looking at whether the director knew, or should reasonably have known, that NIC was being deducted from employees' pay but not passed on to HMRC — and did nothing effective to correct it.
- Fraud generally involves deliberate dishonesty — for example, knowingly using deducted NIC to pay other creditors instead of HMRC.
- Neglect is a lower bar. It can include carelessness, failing to check the company's PAYE and NIC position, or letting arrears build up without taking reasonable steps to address them.
Genuine business failure, on its own, is not neglect. A director who acted reasonably, took proper advice and kept proper records has a stronger position than one who simply says the company "ran out of money".
How HMRC decides who to pursue
HMRC does not issue a PLN to every director automatically. It looks at each person's actual role and influence over payroll and payment decisions during the period the arrears built up.
- Whether the director had day-to-day control over payroll and payment decisions.
- Whether they were aware NIC was being withheld and had the ability to stop it.
- Whether more than one director shares responsibility — HMRC can issue notices to several directors for the same period, and each is liable individually.
- Non-executive or largely passive directors may still be considered, but HMRC has to show they meet the fraud-or-neglect test personally.
PLN cases often turn on the specific facts of who did what, rather than a formula — see our guide on whether directors are personally liable for tax more generally.
Your right to appeal and the deadline
A director who receives a Personal Liability Notice has the right to appeal it. The notice itself will confirm the deadline, which is typically a short, fixed window from the date of the notice — so it is worth acting promptly rather than waiting.
An appeal can challenge either or both of the following:
- Whether the fraud-or-neglect test is actually met on the facts.
- Whether the amount HMRC has calculated is correct.
Appeals are made in writing, setting out the grounds and any supporting evidence, following HMRC's general process for appealing a tax decision. In some cases it may be possible to ask HMRC to review its decision before, or instead of, going to the tax tribunal. Missing the appeal deadline can make it much harder to challenge the notice later.
What happens if you don't respond
If a PLN is not appealed within the deadline, or an appeal fails, the amount becomes a formal personal debt owed to HMRC. HMRC can then use its usual debt-recovery powers against the director individually.
- HMRC can ask the county court (or Sheriff Court in Scotland) to enter judgment for the debt.
- Enforcement action can follow, potentially affecting personal assets, income or, in serious cases, personal insolvency proceedings.
- A PLN debt sits separately from any company insolvency process — the company entering liquidation does not automatically clear it.
Ignoring a PLN does not make it go away. It generally narrows a director's options rather than removing the problem, which is why an early response matters.
Getting specialist help to challenge it
Because a PLN turns on facts — what a director knew, decided and did — the strength of a challenge usually depends on evidence: board minutes, correspondence with HMRC, payroll records and the sequence of events. A regulated solicitor or insolvency practitioner can assess whether the fraud-or-neglect test is properly met in a specific case.
This is also closely linked to the wider question of when a director can be made responsible for company debts generally, covered in our article on personal liability for company debts.
Harbourfirst does not give legal or insolvency advice itself. We introduce directors to regulated specialists who can review the notice, the evidence and the deadline, and advise on the realistic options.
Frequently asked questions
Can I appeal a Personal Liability Notice?
Yes. Every PLN carries a right of appeal, on the grounds that the fraud-or-neglect test is not met, that the amount is wrong, or both. The notice states the deadline, and it is important to appeal in writing within that window.
Does a PLN cover VAT or PAYE income tax?
No. A Personal Liability Notice under this specific power relates to unpaid Class 1 National Insurance contributions. HMRC has other, separate routes for pursuing directors over VAT or PAYE income tax, with their own tests and procedures.
What counts as "neglect" for a Personal Liability Notice?
Neglect is a lower threshold than fraud. It can include failing to ensure NIC deducted from staff was actually paid to HMRC, not checking the company's PAYE position, or allowing arrears to build up without reasonable steps to fix them.
Can more than one director get a PLN for the same debt?
Yes. If HMRC considers that several directors each meet the fraud-or-neglect test for the same period, it can issue a notice to each of them. HMRC then decides how it collects the overall amount between the directors involved.
Does a PLN debt disappear if the company is liquidated?
No. A Personal Liability Notice creates a personal debt owed by the director, separate from the company. The company entering liquidation or being dissolved does not cancel a PLN already issued to a director.
This article is general information, not legal, financial or insolvency advice, and does not consider your individual circumstances.
If you'd like to understand your options after receiving an HMRC Personal Liability Notice, Harbourfirst can introduce you to a regulated insolvency specialist — start an enquiry.