Mandatory Payrolling of Benefits in Kind from April 2027 - Employer Guide

From 6 April 2027, employers must report and tax certain benefits in kind through payroll in real time. Company cars, car fuel, vans, van fuel and employer-provided medical benefits move into mandatory payrolling first. Income Tax and Class 1A National Insurance contributions on these benefits will run through the Full Payment Submission (FPS) at each payroll date.

HMRC confirmed the phased timetable on 15 June 2026, when it updated its interim guidance on real-time reporting of benefits in kind. Most other benefits follow from 6 April 2028. Employment-related loans and living accommodation stay outside the mandate altogether and can continue to be reported on form P11D.

The reform has moved once already. Mandatory payrolling was originally announced for April 2026, then pushed back to April 2027 in a technical note published on 28 April 2025. The June 2026 update added the two-phase rollout after feedback from employers and payroll software providers.

Any employer that provides a phase 1 benefit is affected, from a two-person firm with a single company van to a group running a large car fleet and private medical cover. Payroll, HR and finance teams all have work to do before the first pay run of the 2027 to 2028 tax year.

Primary sources: HMRC's interim guidance on mandatory payrolling of benefits in kind and expenses (updated 15 June 2026), including the section on the phased introduction of mandatory payrolling, and the HMRC technical note of 28 April 2025 that set out the framework.

Why This Matters

Payrolling changes when employees pay tax on their benefits, not how much. Today, most benefit tax is collected in arrears through tax code adjustments based on the previous year's P11D. From April 2027, tax on phase 1 benefits is deducted from pay in the period the benefit is provided.

That timing shift shows up directly in take-home pay. An employee whose tax code has never caught up with their company car will see a visible new deduction on their first payslip of the 2027 to 2028 tax year. Employers who do not explain the change in advance should expect a spike in payroll queries.

There is also a hard compliance edge. Class 1A National Insurance moves to real-time payment for payrolled benefits, reporting moves onto the FPS, and HMRC has confirmed that late filing and late payment penalties will apply as normal, even though there is a soft landing for inaccuracies in the first year.

1. What Must Be Payrolled from 6 April 2027

Phase 1 covers five benefit categories: company cars, car fuel, vans, van fuel and employer-provided medical benefits such as private medical insurance. These are among the most commonly provided benefits, and their taxable values tend to be known at the start of the year, which makes them the simplest to run through payroll.

No registration is needed. HMRC's guidance states that employers will not need to register in order to payroll benefits in kind from April 2027; the mandate applies automatically. That is a change from the current voluntary payrolling scheme, which requires registration before the start of the tax year in which you want to payroll.

From the first pay run on or after 6 April 2027, the taxable value of each phase 1 benefit must be included in the FPS. Income Tax is collected through PAYE in the period, and Class 1A National Insurance contributions are calculated and paid in real time alongside it.

2. What Follows from April 2028

Phase 2 brings most other benefits in kind and taxable expenses into mandatory payrolling from 6 April 2028. That covers the long tail of P11D items, such as gym memberships, professional subscriptions paid by the employer and other miscellaneous benefits.

During the 2027 to 2028 transition year, benefits outside phase 1 continue on the existing footing. They are reported on P11D after the year end, unless the employer has already registered to payroll them voluntarily under the current scheme.

Employers who already payroll most benefits voluntarily will notice little difference in April 2028. Those still relying on P11Ds for everything face two separate change projects, one in 2027 and one in 2028, so it is worth planning both at the same time.

3. What Stays Voluntary

Employment-related loans and living accommodation are excluded from both phases. They can continue to be reported on forms P11D and P11D(b), or they can be payrolled voluntarily from April 2027 if the employer prefers to bring everything into one process.

Voluntary payrolling of loans and accommodation requires registration with HMRC. The registration service for the 2027 to 2028 tax year opens in November 2026, and the deadline to register is 5 April 2027. Miss it and those benefits stay on P11Ds for another year.

4. How Real-Time Payrolling Works in Practice

Real time means at each payroll date, not continuously. The taxable value of the benefit is added to the employee's taxable pay each pay period, typically by spreading the annual cash equivalent across the year, and tax is deducted through PAYE in the normal way.

The FPS is being expanded with additional fields that mirror the information currently captured on forms P11D and P11D(b). HMRC provided technical specifications to payroll software developers in November 2025 and, in the June 2026 update, committed to publishing updated guidance in July 2026 and revised RTI specifications in the second half of 2026, with final phase 1 guidance expected around the Autumn Budget 2026. HMRC's free Basic PAYE Tools will also be updated to handle payrolling from April 2027.

P11Ds do not vanish overnight. Employers must still file 2026 to 2027 P11Ds by 6 July 2027 under the old process, and P11Ds remain in use through the transition for benefits that are not yet mandated, as well as for loans and accommodation that are not voluntarily payrolled.

Watch the Class 1A overlap in July 2027. Employers will settle the 2026 to 2027 Class 1A liability through the P11D(b) process that summer while already paying real-time Class 1A on phase 1 benefits for the new year. It is a one-off cashflow bump, but it needs to be in the budget.

5. The Take-Home Pay Impact and Employee Communications

The annual tax an employee pays on a benefit does not change. What changes is the collection method: instead of an estimated deduction buried in a tax code, the tax comes out of each payslip in the year the benefit is received.

HMRC's guidance asks employers to explain three things to staff. Tax on benefits will be collected in real time from April 2027. Tax codes will stop including estimated deductions for payrolled benefits. And some employees may temporarily feel they are paying tax twice, because their code is still collecting an underpayment from an earlier year while the new in-period deduction begins.

Plan communications well before the first affected payslip. A short written notice in early 2027, a worked payslip example for car and medical benefit holders, a simple FAQ and a briefed payroll inbox will absorb most of the questions before they become complaints.

Payrolling Timetable at a Glance

Benefit	Mandatory from	Route today
Company cars and car fuel	6 April 2027	P11D, or voluntary payrolling if registered
Vans and van fuel	6 April 2027	P11D, or voluntary payrolling if registered
Employer-provided medical benefits	6 April 2027	P11D, or voluntary payrolling if registered
Most other benefits and taxable expenses	6 April 2028	P11D, or voluntary payrolling if registered
Employment-related loans	Not mandated, voluntary only	P11D; voluntary payrolling available from April 2027 (register by 5 April 2027)
Living accommodation	Not mandated, voluntary only	P11D; voluntary payrolling available from April 2027 (register by 5 April 2027)

What Employers Must Do Before April 2027

1. Audit every benefit you provide. List all benefits in kind currently reported on P11Ds and sort them into three buckets: mandatory from April 2027, mandatory from April 2028, and voluntary. This is the step HMRC's own preparation guidance puts first, and everything else depends on it.
2. Update payroll software and processes. Ask your software provider or bureau now how it will handle the expanded FPS fields, and when its update ships. Agree who calculates cash equivalents, how mid-year benefit changes are processed and what the payroll cut-off is for benefit data.
3. Map the transition-year filings. Diary the 2026 to 2027 P11Ds due by 6 July 2027, the Class 1A payment that follows, and the parallel P11D run for phase 2 benefits in 2027 to 2028. Decide before 5 April 2027 whether to register to payroll loans or accommodation voluntarily.
4. Plan employee communications. Tell affected staff before April 2027 that tax on cars, fuel and medical cover will move onto the payslip, that tax codes will change, and that take-home pay in the transition months may look different. Provide a worked example and a named contact.
5. Brief managers and HR. Line managers field the first questions when payslips change. Give them a short script covering what changed, why, and where detailed answers live, so the queries that reach payroll are the genuinely difficult ones.
6. Align expenses and benefits policies. Update your company car, expenses and benefits documentation so it describes the new tax treatment, the data employees must supply, and the deadlines benefit providers must meet for renewal values to reach payroll on time.

Common Errors to Avoid

• Assuming every benefit moves in April 2027. Only cars, car fuel, vans, van fuel and medical benefits are in phase 1. Payrolling the wrong scope, or missing part of the right scope, creates FPS errors that take months to unwind.
• Waiting for final guidance before starting. Updated guidance was promised for July 2026 and final specifications later in the year, but the phase 1 benefit list and start date are confirmed. Software conversations and benefit audits can start now.
• Dropping P11Ds too early. The 2026 to 2027 P11Ds are still due by 6 July 2027, and P11Ds continue for non-mandated benefits through the transition. Stopping the old process a year early is a compliance failure, not a simplification.
• Missing the loans and accommodation registration deadline. If you want to payroll these voluntarily in 2027 to 2028, you must register between November 2026 and 5 April 2027. There is no in-year registration.
• Leaving employees to find out from their payslips. An unexplained drop in take-home pay generates grievances, payroll disputes and calls to HMRC. The tax position is defensible; the silence is not.
• Treating the soft landing as a free pass. The first-year easement covers inaccuracies only. Late FPS submissions and late payments attract penalties as normal from day one.

Penalties and the First-Year Soft Landing

HMRC has confirmed a soft landing for the 2027 to 2028 tax year. Employers who make an error related to mandatory payrolling in their RTI returns for that year will not be charged penalties for inaccuracies, unless there is evidence of deliberate non-compliance.

The easement is narrow. It applies to accuracy penalties only, so the standard penalties for late filing and late payment still apply throughout. Employers should treat 2027 to 2028 as a year to correct honest mistakes quickly, not as a year without consequences.

How Policy Pros Can Help

Payrolling is a payroll systems change, but it lands inside your written procedures. Your finance manual needs to say who calculates cash equivalents, when benefit data reaches payroll and how the Class 1A overlap in July 2027 is budgeted. We write and update finance policies and procedures so the new process is documented before the first 2027 pay run, not reconstructed after it.

Vehicle and expenses documents carry most of the phase 1 load. We can revise your lease car policies to explain the new in-period tax treatment to drivers, and bring your travel and expenses policies into line with the reporting rules that follow in 2028, so you handle both phases in one exercise.

The employee-facing side matters just as much. Handbook wording, benefit scheme documents and communication templates all need to describe the change accurately and in plain language. Our HR policies and procedures service covers exactly this, from the benefits section of your handbook to the notice you send staff before April 2027.