Employee Benefits & Tax UK 2026/27 — BIK, P11D and Salary Sacrifice

Employee Benefits and Tax UK 2026/27

If your employer provides a company car, private medical insurance, a gym membership, or any other non-cash perk, HMRC will usually expect you to pay tax on it. These are called benefits in kind (BIK), and for most employees they are a significant — and frequently misunderstood — part of their total pay package.

This hub covers everything you need to know: how benefits in kind are taxed, how to read your P11D, which schemes genuinely save you money through salary sacrifice, and what the BIK rates are for 2026/27.

What Counts as a Benefit in Kind?

A benefit in kind is any non-cash perk your employer provides that has a monetary value. Common examples include:

• Company cars and fuel
• Private medical or dental insurance
• Gym memberships
• Interest-free or low-interest loans over £10,000
• Living accommodation
• Mobile phones (above one per employee)
• Share options below market value

Some benefits are exempt from tax entirely. These include: one mobile phone per employee, employer contributions to registered pension schemes, cycle to work schemes, childcare vouchers (legacy schemes still running), and from 6 April 2017, ultra-low emission vehicles provided under qualifying arrangements.

How Are Benefits in Kind Taxed?

HMRC assigns each type of benefit a cash equivalent value — broadly, what it would cost you to buy the same benefit yourself. This cash equivalent is added to your gross income for tax purposes.

For the employee: You pay income tax on the cash equivalent at your marginal rate (20%, 40%, or 45%).

For the employer: The company pays Class 1A National Insurance at 13.8% on the cash equivalent value of most BIK. This is paid once a year (by 19 July) and is separate from the regular monthly NI run.

BIK Rates for Company Cars 2026/27

The company car BIK charge is calculated as:

List price of the car × BIK percentage rate = Taxable benefit

The percentage rate is set by CO2 emissions. Key rates for 2026/27:

Worked example — petrol vs electric:

Sarah’s employer offers her a £40,000 car. As a higher rate (40%) taxpayer:

The electric car saves Sarah over £4,600 in income tax per year before any salary sacrifice arrangement.

What Is a P11D and Do You Need One?

A P11D is the form your employer files with HMRC each year to declare the value of any taxable benefits it has provided. Employers must submit P11Ds by 6 July after the end of each tax year.

What happens after a P11D is filed:

1. HMRC receives the values from your employer
2. HMRC adjusts your tax code to collect the BIK tax through PAYE
3. The BIK value appears in your updated Notice of Coding (P2)
4. You pay tax on the benefit gradually across the year via your payslip

You should receive a copy of your P11D — check that the figures match what you actually received. Common errors include using the wrong list price for a company car, or including benefits that were actually paid for personally. If there is an error, write to HMRC with evidence.

Not all employers use P11D. Some use payrolling of benefits instead, where the BIK value is added to your taxable pay each month in real time. If your employer payrolls benefits, you will not receive a P11D for those benefits — they are already accounted for in your payslips.

Salary Sacrifice: How It Works and Where It Saves

Salary sacrifice is a formal written agreement between you and your employer: you accept a lower cash salary, and your employer provides a benefit of equivalent value. Because your gross salary is reduced before tax is applied, you pay less income tax and National Insurance.

The tax maths

Your employer simultaneously saves 15% employer NI on the amount sacrificed.

Worked example — higher rate taxpayer, £500/month sacrifice:

The employee gives up £290/month in take-home pay but receives £500/month in benefit — an effective employer top-up of £210 funded purely by the tax saving.

Important rule on non-exempt benefits

For most benefits funded by salary sacrifice — including petrol or diesel company cars — the taxable BIK is the greater of the cash equivalent value or the salary sacrificed. This removes the tax advantage for most non-exempt benefits and is why salary sacrifice works best for the four exempt categories below.

The Four Tax-Exempt Salary Sacrifice Schemes

These four categories retain full tax exemption even under salary sacrifice — making them the most valuable workplace benefits available to UK employees.

1. Pension contributions

Contributing to a registered pension scheme via salary sacrifice is the most common and most valuable exempt scheme. Your contribution reduces gross pay before any tax is applied. See the Salary Sacrifice Guide and Salary Sacrifice Calculator for detailed workings.

2. Electric vehicle (EV) schemes

An EV provided through salary sacrifice is classified as an ultra-low emission vehicle (ULEV) and retains full exemption from the Optional Remuneration Arrangement (OpRA) rules that restrict other benefits. You pay BIK tax at just 3% on the list price — and the salary sacrifice further reduces your gross pay before tax. This double benefit makes EV salary sacrifice exceptionally efficient.

A higher rate taxpayer on a £40,000 electric car via salary sacrifice typically saves £300–£450 per month compared to buying or leasing the same car privately. See EV Salary Sacrifice Guide.

3. Cycle to work schemes

Qualifying cycle to work schemes are fully exempt from tax and NI. You can sacrifice salary to fund the cost of a bicycle and equipment (typically up to £1,000, or up to £5,000 for a cargo bike or electric bike). The saving is 28–47% depending on your tax band, making a £800 bike cost roughly £460–£575 in net pay.

4. Employer childcare (legacy schemes only)

Employer-contracted childcare vouchers issued before 4 October 2018 remain tax and NI exempt within weekly limits. These schemes are now closed to new entrants — if you joined after that date, you access childcare support through the government’s Tax-Free Childcare scheme instead, which is separate from your employer.

Articles in This Cluster

Related Tax Guides

• Income Tax UK 2026/27 — how your salary is taxed before any benefits
• Take-Home Pay Calculator — calculate net pay including the effect of salary sacrifice
• Self Assessment Tax Return Guide — if your BIK total exceeds the PAYE collection threshold
• Dividend Tax Guide UK 2026/27 — if you also receive dividends as a company director

Key Dates: Employee Benefits 2026/27

If your taxable benefits total more than £50,000 in a year, HMRC may require a self assessment return even if you are employed. Speak to your employer’s payroll team or a tax adviser if you are unsure.