P11D Benefits in Kind
Total your P11D benefits-in-kind — medical insurance, company car, fuel, beneficial loans and other perks — into the tax the employee owes and the employer's Class 1A NIC.
Data verified · July 2026
Do I need to file a P11D for every employee?
Only for employees who received benefits not already payrolled. If all benefits are payrolled, you still file the P11D(b) for the Class 1A NIC.
Source: HMRC — Expenses and benefits for employers (gov.uk/expenses-and-benefits-a-to-z); P11D and P11D(b) filing guidance, 2025/26. · updated 2026
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Everything about P11D Benefits in Kind
📋Overview+
Most non-cash benefits provided to employees and directors are taxable and reported annually on the P11D: private medical insurance, company car and fuel benefit values, beneficial loan benefits, and any other perks. The employee pays income tax on the total at their marginal rate; the employer pays Class 1A NIC (15% for 2025/26) on the same total, reported on the P11D(b).
💡 Best practices
- Payrolling benefits (registering with HMRC to tax benefits through payroll instead) removes the need for a P11D for those benefits.
- Trivial benefits under £50 each, and certain exemptions like workplace parking, don't need to be reported at all.
- Class 1A NIC is an annual employer cost — budget for 15% of your total benefits bill each July.
🔢 Concrete example
£1,200 medical insurance + £1,200 car benefit: £2,400 total taxable benefits, £960 income tax at 40%, and £360 employer Class 1A NIC.
📖User guide+
How to use this calculator
- 1
Add up private medical insurance premiums paid on the employee's behalf.
- 2
Add the company car and fuel benefit values (use the Company Car calculator to work these out precisely).
- 3
Add any beneficial loan benefit-in-kind and other taxable perks.
- 4
Enter the employee's marginal income tax rate to see the tax due.
📚Glossary+
- P11D
- The annual form reporting expenses and benefits provided to each employee that weren't put through payroll, due to HMRC by 6 July after the tax year.
- P11D(b)
- The employer's summary return declaring the total Class 1A NIC due across all employees' benefits, payable by 22 July (postal: 19 July).
ℹ️Sources & updates+
Last data update
July 7, 2026
Sources and references
HMRC — Expenses and benefits for employers (gov.uk/expenses-and-benefits-a-to-z); P11D and P11D(b) filing guidance, 2025/26.
The data in this calculator is updated regularly to reflect the latest official rates. When in doubt, consult the official sources listed above.
FAQ — P11D Benefits in Kind
Do I need to file a P11D for every employee?+
Only for employees who received benefits not already payrolled. If all benefits are payrolled, you still file the P11D(b) for the Class 1A NIC.
Is Class 1A NIC deducted from the employee's pay?+
No — Class 1A NIC is an employer-only cost. The employee only pays income tax on the benefit value, usually via a tax code adjustment or Self Assessment.