P11D and Benefits in Kind: What UK Employers Must Report Before 6 July 2026

If you gave any employee or director something on top of their salary during the 2025/26 tax  year, HMRC wants to know about it. The deadline to tell them is 6 July 2026. That is less than  seven weeks away. 

This guide covers exactly what counts as a benefit in kind, what forms you need to file, how  much Class 1A National Insurance you will owe, and what happens if you miss the deadline.  Everything here is based on current HMRC guidance on expenses and benefits.

What Is a P11D and Who Needs to File One? 

A P11D is a form that UK employers use to report taxable benefits and expenses provided to  employees and directors outside of payroll. You file one P11D per employee who received  benefits during the tax year. 

You must file a P11D if you provided any non-cash benefit that is not exempt and is not already  being taxed through payroll. This applies regardless of the size of your business. A company  with one director receiving private medical cover has the same filing obligation as a company  with 500 staff receiving company cars. 

You do not need to file a P11D for an employee if: 

• All their benefits are already correctly pay-rolled through your Real Time Information  (RTI) submissions 

• The only benefits you provided qualify for a specific exemption (such as trivial benefits  under £50) 

• The benefits are covered by a PAYE Settlement Agreement (PSA)

Even if you payroll all benefits, you still need to file a P11D(b) to report and pay Class 1A  National Insurance on those benefits. This is one of the most common mistakes employers  make. 

What Counts as a Benefit in Kind? 

A benefit in kind is anything of value your business provides to an employee or director that is  not their salary. The full A to Z list is on GOV.UK, but here are the most common ones: 

If you are unsure whether something counts, the default position under HMRC rules is that any  non-cash benefit is taxable unless a specific exemption applies. When in doubt, report it. 

The Trivial Benefits Exemption: Four Rules You Must Follow 

The trivial benefits exemption is one of the most misunderstood areas of P11D reporting. A  benefit is only exempt if all four of these conditions are met: 

• The cost of providing the benefit is £50 or less 

• The benefit is not cash or a cash voucher 

• The benefit is not a reward for work performance or given in anticipation of work

• The benefit is not part of a salary sacrifice arrangement or any contractual obligation 

There is no annual cap on trivial benefits for employees. But for directors of close companies,  there is a separate annual limit of £300. Once total trivial benefits exceed £300 in a tax year for  a director, everything above that threshold becomes reportable. 

A Christmas gift to each member of staff costing £45 would qualify. A £45 voucher promised as  part of a performance incentive scheme would not, even though the amount is under £50.  HMRC looks at why the benefit was given, not just the amount. 

P11D(b) and Class 1A National Insurance 

The P11D(b) is the employer's overall declaration. It tells HMRC the total Class 1A NIC you owe  across all the benefits you reported on your individual P11Ds. 

For the 2025/26 tax year, Class 1A NIC is charged at 15%, following the increase from 13.8%  announced in the Autumn Budget 2024.

How Class 1A NIC Is Calculated 

Class 1A NIC = Total taxable value of all benefits across all employees × 15% 

Example: Your business provides £40,000 in total reportable benefits across all staff. Class 1A NIC due: £40,000 × 15% = £6,000 

This is an employer-only cost. It does not come out of the employee's pay.

You must pay Class 1A NIC by 22 July 2026 if paying electronically (19 July by post). This is a  separate deadline from the 6 July filing deadline. 

Your Complete P11D Deadline Schedule

Penalties for Late Filing or Late Payment 

HMRC does not send reminders before the deadline. Penalties are triggered automatically. Late filing of P11D(b): 

A penalty of £100 per 50 employees (or part of 50) for each month or part-month the form is  late. For a business with 80 employees, that is £200 per month from the day you are past 6 July.  HMRC issues penalty notices quarterly, but the charges are backdated monthly. 

Incorrect P11D: 

Filing a P11D with mistakes or omissions can result in a penalty of up to £3,000 per form,  according to HMRC's guidance on penalties. In practice, penalties at this level are rare and  usually reserved for deliberate errors, but the risk is real. 

Late payment of Class 1A NIC: 

• 5% surcharge on the amount unpaid after 30 days 

• Additional 5% after 6 months 

• Further 5% after 12 months 

• Plus interest at 7.75% per year on the outstanding balance from the due date

April 2027: The End of P11D Reporting as You Know It 

HMRC confirmed in April 2025 that mandatory payrolling of benefits in kind will start on 6

April  2027. This was originally planned for April 2026 but was delayed after industry feedback. 

From that date: 

• Most benefits must be reported through payroll in real time, on your Full Payment  Submission (FPS) 

• Individual P11D forms will no longer be needed for pay-rolled benefits • Class 1A NIC will also be collected through payroll, not as a single annual payment • Loans and living accommodation will still require P11D reporting, at least initially • HMRC's registration facility for mandatory payrolling is expected to open around  November 2026 

The 2025/26 tax year (filed by 6 July 2026) is the last full year where traditional P11D reporting  applies across the board. Getting your data clean now makes the 2027 transition significantly  easier. 

Watch for the double-tax overlap. Employees moving onto pay-rolled benefits in 2027/28 may  temporarily have tax collected on last year's benefits through their tax code and this year's  benefits through their pay packet at the same time. This creates a short-term squeeze on take home pay. Let your staff know before it shows up on a pay slip. 

Common Questions 

Do I need to file if I already payroll all benefits? 

You do not need to file individual P11D forms for benefits that are correctly pay-rolled. But you  must still file a P11D(b) to declare and pay Class 1A NIC. Payrolling removes the P11D. It does  not remove the P11D(b). 

What if I have nothing to report? 

If you filed a P11D(b) last year and have no benefits to report this year, you must either submit  a nil return or tell HMRC online that no return is needed. Doing nothing is treated as late filing,  not as no obligation. 

Can I still file on paper? 

No. HMRC stopped accepting paper P11D and P11D(b) forms. All submissions must go through  HMRC's PAYE Online service or through recognized payroll software.

Can someone else handle this for me? 

Yes. A registered tax agent can prepare your P11D and P11D(b) forms, calculate Class 1A NIC,  file everything with HMRC, and distribute employee copies. If you are not sure what counts as a  benefit or how to value it, getting professional support before the deadline is the safest option.

Speak to the Taxez Payroll Team 

This article is for informational purposes only and does not constitute tax or legal advice. Figures, rates, and  deadlines are based on HMRC guidance current as of May 2026. Class 1A NIC rate of 15% applies to the 2025/26  tax year. Mandatory payrolling start date of April 2027 was confirmed by HMRC in April 2025. For advice specific to  your circumstances, please speak to a qualified tax adviser.