What is a personal liability notice?

Normally, unpaid company tax is the company's debt, not the director's. A personal liability notice, often called a PLN, is one of the exceptions. It moves specific National Insurance debt onto a named individual.

HMRC can only issue one where it decides the company's failure to pay NIC resulted from fraud or neglect by that particular officer, not simply because the company ran out of money.

It's separate from corporation tax and from insolvency proceedings. A PLN targets Class 1 National Insurance contributions specifically, and it names the individual director personally liable for a stated amount.

Section 121C Social Security Administration Act 1992 gives HMRC the power to issue a personal liability notice where a company has failed to pay Class 1 National Insurance and HMRC considers the failure attributable to the fraud or neglect of a named director, company secretary, or other officer.

HMRC must show the individual's own fraud or neglect contributed to the non-payment, not just that they held office while the company failed. This distinguishes a PLN from simply being a director of an insolvent company.

The notice must specify the amount HMRC considers due, and it's served on the individual, separately from any action against the company. More than one officer can receive a notice for the same underlying debt if more than one is considered responsible.

This power sits alongside, but is distinct from, corporation tax rules and Companies Act 2006 obligations. It exists specifically because National Insurance is treated differently from other company debts where deliberate or careless non-payment by an officer is involved.

If HMRC is investigating unpaid PAYE and National Insurance and starts asking pointed questions about your personal role and decisions as director, a personal liability notice may follow.

The key issue HMRC will focus on is whether you knew, or should have known, that National Insurance wasn't being paid over, and whether you took reasonable steps to correct it.

This risk rises where a company continues trading and taking on new liabilities while known NIC debts build up, particularly close to insolvency, since that pattern is more likely to be viewed as neglect.

Genuine business difficulty, properly managed and disclosed to HMRC, is treated very differently from deliberately prioritising other payments over National Insurance while the company struggled.

A personal liability notice makes you liable for the specified NIC debt personally, alongside any interest. It survives even if the company is later liquidated or dissolved, because it's a separate personal debt.

Challenging a PLN needs evidence about your actual role and decisions at the time, which is easier to gather while records and recollections are fresh.

Growth plan clients get free tax investigation insurance as standard, which can cover professional fees for responding to an HMRC enquiry before it escalates this far. See /fees for plan details.

Don't ignore HMRC correspondence about unpaid PAYE and NIC in the hope the company will absorb it. Delay increases both the debt and the risk of a PLN.

Don't assume every director in office automatically shares liability. HMRC must attribute fraud or neglect to a specific individual, and that attribution can be challenged.

Don't miss the 30-day appeal window if you receive a notice. Appeal rights are time-limited, and missing the deadline narrows your options significantly.

Don't handle a personal liability notice without advice. It's a personal, not a company, liability, and it needs its own evidence and strategy.