Giving your staff or directors a perk is nice. Reporting it correctly to HMRC is where many small employers slip. A benefit in kind is something of value you provide that is not paid through normal salary, and it can create tax and National Insurance to pay. This guide explains what a P11D is, which benefits are reported and how to stay on the right side of the rules.
Key takeaways
- A benefit in kind is a non-cash perk, such as a company car or private medical insurance, that may be taxable.
- Employers report most benefits on a P11D after the tax year, and pay Class 1A National Insurance on them.
- Employees may pay income tax on the value of their benefits, usually through their tax code.
- You can payroll benefits or use a PAYE Settlement Agreement in some cases, instead of filing a P11D.
- Late filing or paying can lead to penalties, so diarise the July deadlines.
What is a benefit in kind?
A benefit in kind (BIK) is anything of value you give an employee or director that is not part of their cash pay. Common examples include company cars, private medical insurance, living accommodation, interest-free or cheap loans and personal expenses paid by the company. Some benefits are fully exempt, such as certain trivial benefits and some workplace provisions, and HMRC publishes the list. For the official overview, see GOV.UK's expenses and benefits guidance for employers.
What is the P11D, and the P11D(b)?
The P11D is the form that reports the benefits provided to each employee or director. The P11D(b) is the employer's summary, which declares the total Class 1A National Insurance due on those benefits. Both are normally due shortly after the tax year ends, with the Class 1A payment following soon after. HMRC sets the exact dates and rates, so check the current figures on GOV.UK's PAYE forms collection before you file.
Who pays what?
| Who | What they pay | How |
|---|---|---|
| Employee or director | Income tax on the value of the benefit | Usually through an adjusted tax code or Self Assessment |
| Employer | Class 1A National Insurance on most benefits | Reported on P11D(b) and paid to HMRC |
| Employer, if payrolling | Class 1A still due on the benefits | Reported through payroll in real time |
Payrolling benefits and PAYE Settlement Agreements
You do not always need a P11D. If you register with HMRC to payroll benefits, you can report the value through your payroll each month, and the employee's tax is collected through their pay. Alternatively, a PAYE Settlement Agreement (PSA) is an arrangement where the employer pays the tax on minor, irregular or hard to allocate benefits, so they do not appear on individual forms. Each route has its own rules and deadlines, and a change can affect your payroll software setup. Our payroll service can help you decide which suits your business.
Worked example (illustrative)
"Callum", an illustrative example, owns a small limited company with two employees. During the year the company pays for private medical insurance for one employee and a gym membership for another, both outside any exemption. At the end of the tax year, Callum records each benefit's taxable value on a P11D, submits a P11D(b) summarising the Class 1A National Insurance due, and pays it by the deadline. His employees pay income tax on the value through their tax codes. Callum also reviews whether a small spending on staff gifts could be handled under an exemption or a PSA the following year. The figures vary by benefit, so he checks the current rules on GOV.UK each year, and speaks to an accountant before agreeing a new perk.
Don't forget directors
Directors are treated as employees for benefit purposes. If your company pays for something personal, such as a family holiday or private bills, it may count as a benefit or be treated as a loan to you. Our guide to the director's loan account explains the second case, and our article on salary versus dividends helps you plan how to take money from the company in a tax-efficient way.
Common mistakes
- Not reporting small perks. A benefit can still be taxable even if it seems minor, unless an exemption applies.
- Missing the July deadlines. Late forms and late payments can attract penalties and interest.
- Forgetting Class 1A. It is an employer cost on top of the value of the benefit, so build it into your costings. See also the true cost of an employee.
- Mixing personal and business spending. Personal costs paid by the company need to be treated properly, not hidden in expenses.
If you are not sure which of your perks are taxable, speak to us before the tax year ends. Our payroll service includes help with benefits reporting, so you file the right forms on time.
Frequently Asked Questions
What is a P11D?
A P11D is a form an employer files with HMRC after the tax year to report certain benefits and expenses provided to employees and directors, such as company cars or private medical insurance. Check the current filing details on GOV.UK.
When is the P11D deadline?
P11D forms are due after the end of the tax year, in the following July. Check the exact date and the payment date for Class 1A National Insurance on GOV.UK each year, as late filing can lead to penalties.
Do directors of small companies need a P11D?
If the company provides a benefit that is taxable and not covered by an exemption, a director is treated like any employee for this purpose. A director-only company still has to report benefits it provides, unless they are covered by payrolling or an exemption.
What is Class 1A National Insurance?
It is a National Insurance charge paid only by the employer on most benefits in kind. It is not deducted from the employee. Check the current rate on GOV.UK.
Can I avoid filing a P11D?
In some cases yes. You can register to payroll benefits through your payroll software, or use a PAYE Settlement Agreement for minor or irregular items. Some benefits are exempt. Take advice before choosing, as each route has its own rules.
Related reading
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Last reviewed: 3 October 2026.
This article is general information, not personal tax advice. Speak to a qualified accountant about your own circumstances before acting on it.