The HMRC P11D deadline for the 2026/27 tax year is 6 July 2027. UK employers who provide taxable benefits or expenses to employees or directors must report them to HMRC where P11D reporting applies. Employers must also provide the relevant benefit information to affected employees by the deadline.
The reporting rules are changing from April 2027. Certain benefits will move to mandatory payroll reporting in phases, so employers need to understand which benefits remain subject to year-end P11D reporting and which will be reported through payroll.
This guide explains benefits in kind tax UK rules, employee benefits tax UK obligations and the key P11D submission deadlines employers must meet.
Key takeaways
- P11D and P11D(b) deadline for the 2026/27 tax year: 6 July 2027, where the forms are required.
- Class 1A NIC payment deadline: 22 July 2027 electronically or 19 July 2027 by cheque.
- An incorrect P11D can carry a penalty of up to £3,000 per form in applicable cases. This is a maximum penalty, not an automatic charge.
- Whether a benefit is taxable or exempt depends on how it was provided, not just what it is.
- Mandatory payrolling of benefits in kind begins in phases from 6 April 2027.
- Company cars, car fuel, vans, van fuel and employer-provided medical benefits are included in Phase 1. Most other benefits are planned to move to mandatory payrolling from April 2028.
- P11D reporting will continue for benefits and situations that remain outside mandatory payrolling.
P11D Submission Deadline: UK HMRC Key Dates
These are the key dates employers should plan around for the 2026/27 tax year.
| Date | What is required |
|---|---|
| 5 July 2027 | Deadline to agree a PAYE Settlement Agreement with HMRC for 2026/27, where applicable. |
| 6 July 2027 | Submit required P11D and P11D(b) forms and provide employee copies. |
| 19 July 2027 | Class 1A NIC payment deadline by cheque. |
| 22 July 2027 | Class 1A NIC payment deadline electronically. |
Submission is completed through HMRC’s PAYE Online service via Government Gateway using your employer PAYE reference or through recognised commercial payroll software.
The 6 July deadline applies to reporting and employee copies. The Class 1A NIC payment deadline is separate.
Who needs to file and who does not?
Any UK employer, including a limited company, sole trader with employees, charity or owner-managed business, must consider P11D reporting where taxable benefits or expenses were provided to employees or directors and were not processed through payroll.
When you don’t need to file a P11D
Not every employer needs to submit individual P11D forms. You generally do not need to file a P11D for an employee if:
- All relevant benefits and expenses were fully payrolled and reported through PAYE.
- No reportable taxable benefits or expenses were provided to the employee during the tax year.
- The benefit is exempt from reporting under the applicable HMRC rules.
One important exception: even if individual P11D forms are not required, you may still need to submit a P11D(b) to report Class 1A National Insurance contributions. HMRC states that employers who payroll benefits may still need to submit P11D(b).
Once you have confirmed whether you need to file, the next step is understanding which forms are involved and what each one does.
What does each form do?
P11D and P11D(b) are two separate forms that work together.
| Form | P11D | P11D(b) |
|---|---|---|
| What it reports | Taxable benefits and expenses for an individual employee or director | Total Class 1A NIC owed by the employer |
| Filed | Separately for each employee or director where required | Once per employer per tax year |
| Required when | Reportable benefits or expenses have not been payrolled or are otherwise reportable | Class 1A NIC is due |
| Deadline for 2026/27 | 6 July 2027, where required | 6 July 2027, where required |
A late or incorrect P11D affects the employee’s tax position, while a late or incorrect P11D(b) affects the employer’s NIC reporting.
How to file a P11D
Employers must complete the applicable P11D reporting process by 6 July 2027 to meet their reporting obligations and ensure employees are taxed correctly on their benefits.
The process involves the following steps:
- Identify employees and directors who received taxable benefits or expenses during 2026/27.
- Separate benefits that were payrolled from those that remain reportable on P11D.
- Calculate the taxable value of each reportable benefit using HMRC’s valuation rules.
- Complete a separate P11D form for each employee or director who received reportable benefits.
- Prepare a P11D(b) showing the total Class 1A National Insurance due, where required.
- Submit the required P11D and P11D(b) forms electronically to HMRC by 6 July 2027.
- Provide the relevant benefit information to affected employees by 6 July 2027.
- Pay any Class 1A National Insurance due by 19 July 2027 by cheque or 22 July 2027 electronically.
Employers normally submit P11D and P11D(b) forms electronically using HMRC-compatible payroll software or HMRC’s PAYE Online service. Before submitting, review the checklist below to ensure all required information has been included and nothing has been overlooked.
P11D Employer Checklist
Many P11D errors arise from a small number of recurring issues. Reviewing the points below before filing can help reduce the risk of penalties, additional tax liabilities and HMRC enquiries.
Final P11D Checks for Employers
- All benefits, including benefits provided to dependants, identified.
- Only non-payrolled benefits reported where P11D reporting applies.
- Employee contributions deducted where allowed.
- Correct HMRC benefit valuations used.
- Class 1A NIC reconciled to taxable benefits.
- Relevant employee copies prepared and provided by the deadline.
- Payroll reporting requirements checked for benefits affected by the April 2027 changes.
Completing these checks before submission can help identify issues early and reduce the likelihood of corrections, penalties or compliance queries after filing.
What goes on a P11D?
HMRC does not require every benefit to be reported. The same benefit can be taxable, exempt or conditionally exempt depending on how it was provided. Misclassifying in either direction can result in an incorrect return or an unnecessary tax charge on the employee.
Benefits that may need reporting if not payrolled
| Benefit | Basis of valuation |
|---|---|
| Company car | List price multiplied by the appropriate CO₂-based benefit percentage |
| Private fuel for company car | Car fuel benefit multiplier multiplied by the appropriate percentage |
| Company van used privately | £4,170 for 2026/27, subject to applicable reductions and exemptions |
| Private fuel for company van | £798 for 2026/27, subject to applicable reductions and exemptions |
| Private medical or dental insurance | Employer’s premium, including any element covering family members |
| Beneficial loans | Difference between interest charged and the applicable HMRC official rate |
| Living accommodation | Assessed under HMRC’s accommodation valuation rules |
| School fees, personal bills and gym memberships | Valued under the applicable HMRC rules |
Important: These figures apply to the 2026/27 tax year. Check HMRC’s latest guidance and calculations before completing a return.
Exempt benefits
Trivial benefits of £50 or less may be exempt provided the benefit is non-cash, not a reward for performance and not contractual. Directors of close companies cannot receive more than £300 in trivial benefits per tax year.
Other exempt benefits may include one employer-contracted mobile phone per employee, qualifying cycle-to-work equipment, employer pension contributions and certain business expenses reimbursed at HMRC-approved rates.
Exemption conditions can vary. Check the relevant HMRC guidance before deciding that a benefit does not need reporting.
Conditionally reportable
Some benefits may be taxable or exempt depending on how they are provided, including:
- Homeworking payments.
- Relocation expenses.
- Training costs.
- Certain vouchers and allowances.
HMRC decides whether a benefit is taxable based on why it was given and how it was provided. For example, a gift may be exempt if it meets trivial-benefit conditions, but the same gift given as a performance reward may be taxable.
How are benefits valued and where errors occur?
The cash equivalent on the P11D is not always the cost to the employer. Each benefit has a specific HMRC valuation method, and applying the wrong figure can produce an incorrect return.
For example, a director receives:
- Company car benefit: £9,920
- Private medical insurance: £1,800
Total reportable benefit: £11,720
At a Class 1A NIC rate of 15%, the employer would owe £1,758 in Class 1A NIC.
This is an illustrative calculation only. The actual Class 1A NIC due depends on the applicable tax year, benefit valuation and reporting treatment.
Valuation errors can result in incorrect returns and additional tax or NIC liabilities. Three areas employers should review carefully are making good, beneficial loan rates and company car calculations.
Making good
Any amount an employee pays towards a benefit may reduce the taxable cash equivalent, subject to HMRC’s rules and deadlines. Contributions not recorded correctly can result in an overstated P11D value and excess Class 1A NIC.
Beneficial loan rate changes
The official rate of interest used for beneficial loan calculations can change. Employers should use the applicable rate and HMRC’s valuation rules for the relevant period.
Do not automatically apply the 2025/26 official rate to 2026/27 benefits. Check HMRC’s current rate and guidance before calculating the benefit.
Company car calculations
Company car benefit calculations depend on factors such as the car’s list price, CO₂ emissions, fuel type and the period it was available to the employee.
Employers should check the vehicle details and use HMRC’s company car guidance or calculator rather than relying on an outdated percentage or previous-year calculation.
These valuation issues can lead to incorrect returns, additional tax and Class 1A NIC liabilities.
Common HMRC Mistakes on P11D Returns
Valuation errors are not the only issue HMRC finds during compliance checks. The following mistakes can lead to additional tax, Class 1A NIC liabilities and penalties.
- Reporting payrolled benefits on a P11D
If a benefit has already been taxed through payroll, reporting it again on a P11D may result in duplicate reporting. - Leaving out benefits provided to family members
Benefits such as private medical or dental insurance that cover a spouse or dependants may need to be valued using the full employer cost. - Getting company car calculations wrong
Common errors include using the wrong CO₂ emissions percentage, fuel type or failing to adjust the benefit when the car was only available for part of the tax year. - Not deducting employee contributions
Where employees contribute towards a benefit, the contribution should be taken into account where HMRC’s rules allow it. - Using an outdated beneficial loan rate
Applying the wrong official rate can produce an incorrect benefit value. - Misunderstanding trivial benefits rules
A gift is not automatically tax-free just because it costs less than £50. It must meet the relevant exemption conditions. - Not submitting a P11D(b)
Some employers assume that payrolling all benefits removes the need for a P11D(b). However, a P11D(b) may still be required where Class 1A NIC is due.
Each of these mistakes can create additional costs for employers, which is why understanding HMRC’s penalty rules is important.
Penalties for Late Filing and Incorrect Returns
HMRC operates separate penalty rules for late and inaccurate P11D reporting.
Late filing of P11D(b)
A penalty of £100 per 50 employees or part of 50 employees may apply for every month or part month the P11D(b) remains unfiled after the deadline.
Employers should submit overdue returns as soon as possible rather than waiting for a penalty notice. HMRC may issue further penalties if the return remains outstanding.
Incorrect P11D
Penalties for an inaccurate P11D can reach £3,000 per form in applicable cases.
This is a maximum penalty, not an automatic charge for every error. HMRC considers the circumstances and whether the incorrect return resulted from careless or deliberate behaviour.
A miscalculated car benefit, a missed family medical premium or a loan assessed at the wrong rate can each lead to an inaccurate return.
Late payment of Class 1A NIC
Late payment of Class 1A NIC can result in interest and penalties.
The deadline for paying Class 1A NIC for the 2026/27 tax year is 22 July 2027 electronically or 19 July 2027 by cheque.
Keeping a clear record of how each benefit was valued, with supporting figures for each calculation, can help employers respond to HMRC queries.
Mandatory Payrolling of Benefits in Kind from April 2027
HMRC is introducing mandatory payrolling of benefits in kind in phases. This is one of the most important changes employers need to prepare for.
Phase 1: From 6 April 2027
Mandatory real-time reporting through payroll will apply to:
- Company cars.
- Car fuel.
- Vans.
- Van fuel.
- Employer-provided medical benefits.
These benefits will be reported through payroll software and Real Time Information (RTI), rather than relying on the previous end-of-year reporting process for the relevant payrolled benefits.
Phase 2: From April 2028
Mandatory payrolling is planned to extend to most remaining benefits in kind from April 2028.
Employer-provided loans and living accommodation are excluded from mandatory payrolling under the current plans and can continue to be reported through the existing arrangements or voluntarily payrolled where permitted.
Employers should not assume that all P11D reporting will end in April 2027. The transition is phased, and some benefits and employee situations will continue to require year-end reporting.
What employers should do now
Employers should:
- Review the benefits they provide to employees.
- Identify benefits affected by Phase 1.
- Check whether payroll software can support the new reporting requirements.
- Review payroll, HR and finance processes.
- Plan how benefit values will be calculated and updated.
- Communicate changes to employees, particularly where tax deductions and take-home pay may be affected.
- Check HMRC guidance for exceptions and benefits that remain subject to P11D reporting.
The transition may affect how employees’ tax is collected. Employers should explain the changes clearly and ensure payroll processes are ready before April 2027.
Employers should also plan for the potential overlap in Class 1A NIC payments during 2027. They may still need to pay Class 1A NIC for benefits provided in 2026/27 under the existing year-end process, while beginning real-time Class 1A NIC payments for benefits provided from April 2027. This may create a temporary cash-flow impact.
Conclusion
The 6 July 2027 deadline covers P11D and P11D(b) reporting for the 2026/27 tax year, where the forms are required. The Class 1A NIC payment deadline is 22 July 2027 electronically or 19 July 2027 by cheque.
Employers should review benefits carefully, distinguish payrolled benefits from those requiring P11D reporting and ensure that employee information is provided on time.
The introduction of mandatory payrolling from April 2027 makes it especially important to review payroll processes and understand which benefits move to real-time reporting and which remain subject to P11D requirements.
If any part of your benefits reporting is uncertain or you need help preparing for the reporting changes, professional support can help you review the relevant obligations and avoid preventable errors.
A final review before filing can help reduce errors, penalties and employee tax issues.
To discuss your P11D reporting requirements, contact Daniel Wolfson & Co on 01923 856 008 or email office@danielwolfson.co.uk.
FAQs
Does a P11D need to be filed if all benefits were payrolled?
You generally do not need to submit a P11D for benefits that have been fully payrolled. However, a P11D(b) may still be required where Class 1A NIC is due.
What is the official rate of interest for beneficial loans?
The official rate can change. Employers should check the applicable HMRC rate for the relevant tax year and period before calculating the taxable benefit.
Can directors of close companies receive trivial benefits?
Yes. Directors of close companies can receive qualifying trivial benefits, subject to the £50-per-benefit conditions and the annual £300 limit. The benefit must also meet the other exemption requirements.
Does an employee contribution towards a benefit reduce the P11D value?
An employee contribution may reduce the taxable value of a benefit where HMRC’s rules allow it. Employers should record contributions accurately and apply the relevant valuation conditions.
Are beneficial loans and living accommodation included in mandatory payrolling from April 2027?
No. Under the current plans, employer-provided loans and living accommodation are excluded from mandatory payrolling and can continue to be reported through existing arrangements or voluntarily payrolled where permitted.
What is the deadline to agree a PAYE Settlement Agreement for 2026/27?
The deadline is 5 July 2027, where applicable.
What happens if a P11D or P11D(b) is filed late?
Late filing can result in penalties. P11D(b) late filing penalties may be charged based on the number of employees and the length of the delay. Employers should submit overdue forms as soon as possible.
Can a P11D be amended after submission?
Yes. If an error is identified after submission, employers should use HMRC’s correction process for the relevant P11D or P11D(b) form. Check HMRC’s latest guidance for how to make the correction.
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