Mandatory Benefits-in-Kind Payrolling 2027 | Employer Guide

From 6 April 2027, UK employers will begin a phased move to real-time payrolling for selected taxable benefits in kind (BIKs) and expenses. The current HMRC interim guidance puts company cars, car fuel, vans, van fuel and employer-provided medical benefits in phase 1.

The change affects payroll operations and the timing of employees' tax, not whether a benefit is taxable in principle. Employers will report the relevant taxable values through the Full Payment Submission (FPS) at each payroll date. HMRC says the transition is phased: most other BIKs are planned for phase 2 from April 2028, while employment-related loans and accommodation remain voluntary in the current plan.

This is an operational planning guide based on HMRC's interim material. It is not a replacement for the final technical specifications or advice about a particular employee's tax position. For the underlying company-car calculation, use the Company Car BIK Calculator→; for employer-side payroll cost, compare the Employer NI Calculator→.

What is mandatory from April 2027?

The current HMRC phase-one guidance identifies these categories:

The change is about how the taxable value is reported and collected during the year. It does not create a new company-car valuation formula in this guide. The value still depends on the applicable benefit rules, employee circumstances and the information held by the employer. Use the Company Car BIK Calculator→ for an illustration of the company-car tax inputs, and check the current HMRC rules for edge cases.

How will the reporting work?

The current guidance says the employer will use the FPS, the same payroll submission used to report salary and other employee details to HMRC. The BIK and taxable-expense values will be reported at each payroll date throughout the tax year so that Income Tax and Class 1A National Insurance contributions can be reported in real time.

This means the payroll process needs a reliable flow of information, not just a year-end spreadsheet. A change to a car, fuel provision, van, medical cover or an employee's eligibility needs to reach whoever prepares payroll in time for the relevant submission. HMRC also says additional BIK fields will be added to the FPS and that updated technical specifications are expected for software providers.

The exact software field names and implementation details are not a reason to invent a local workaround. Employers should ask their payroll provider when its 2027/28 release will support the final specification and how corrections, leavers and mid-year benefit changes will be handled.

Do employers need to register?

Employers will not need to register to payroll the mandatory phase-one BIKs from April 2027.

Registration is relevant if an employer wants to payroll a non-mandatory BIK voluntarily. HMRC currently gives employment-related loans and accommodation as examples of benefits that remain voluntary in the 2027 phase. The interim guidance says the service to register for voluntary payrolling is expected to go live in November 2026, with a deadline of 5 April 2027 for employers that want to use it from the start of the tax year.

Do not register simply because the business provides any benefit. First separate the benefits into:

• the phase-one mandatory list;
• a non-mandatory benefit the employer wants to payroll voluntarily; and
• a benefit whose treatment needs confirmation from the latest HMRC guidance.

That classification prevents an employer from treating the phase-one obligation as if it covered every BIK at once.

What happens to tax codes and P11D processes?

HMRC says it will automatically remove the phase-one BIKs from employees' tax codes ready for mandatory payrolling on 6 April 2027. Tax on the benefit is then collected in real time in the year the employee receives it, rather than relying on the old tax-code adjustment for the same year's benefit.

Employees may see a confusing transition if they are still paying tax for an earlier year. HMRC warns that an employee can appear to pay tax twice from April 2027: once for the current year's benefit through payroll and once for an underpayment or arrears from a previous year. That is not automatically a duplicate charge. Employers should explain the distinction clearly and direct employees with hardship or disputed figures to HMRC.

Mandatory payrolling does not mean every existing P11D process disappears on the same date. The phase-one scope, employee exceptions, corrections and benefits outside the mandatory list still need to be followed according to the latest HMRC guidance. Keep an audit trail of the benefit information supplied to payroll and do not close year-end controls until the final reporting rules confirm what remains required.

What is planned for phase 2?

HMRC's current phased plan says most other BIKs will move to mandatory payrolling from April 2028. Employment-related loans and accommodation are currently excluded from that mandatory phase and remain voluntary in the interim material.

The phase-two timetable is not a reason to apply the phase-one list early to every benefit. Treat it as a planning signal, monitor HMRC updates and wait for final guidance before changing a category that is not clearly in scope.

Employer preparation checklist

Common mistakes to avoid

• Treating all BIKs as phase one. The current mandatory list is narrower than the full range of taxable benefits.
• Waiting until the first payroll. Software, data ownership and benefit-change workflows need testing before 6 April 2027.
• Assuming registration is required for mandatory BIKs. HMRC says registration is not needed for phase-one mandatory payrolling.
• Ignoring the employee communication. Tax may be collected in the current year instead of through a later tax-code adjustment, and prior-year arrears may still appear.
• Using a calculator as payroll authority. A calculator can illustrate a company-car tax input; it does not replace HMRC reporting rules or payroll software guidance.

Global mobile employees and voluntary payrolling

HMRC's September 2026 Agent Update adds an important exception to the implementation picture. Globally Mobile Employees (GME) will be exempt from mandatory payrolling of benefits in kind and expenses. Employers with eligible GME employees can continue reporting those items through P11D and P11D(b) at year end, or choose to payroll them voluntarily.

HMRC says an online G-Form is expected to be available in November 2026 so employers can tell HMRC which employees should be excluded. Employers should identify potentially eligible globally mobile employees, check the final exception criteria and keep the payroll, assignment and benefits records that support the exclusion. Do not treat every employee who works abroad as automatically within the GME exception.

There is also a separate Class 1A NIC change for employers who voluntarily payroll non-mandated benefits. From 6 April 2027, an employer that chooses to payroll those benefits must also pay the associated Class 1A NIC through payroll rather than reporting it separately at the end of the tax year. The voluntary-payrolling service is expected to open in November 2026; employers that do not want to continue voluntary payrolling from 2027/28 must withdraw by 5 April 2027.

Frequently Asked Questions

Year-end reconciliation for payrolled benefits

The benefits register should identify each employee, benefit type, start and end date, value used, employee contribution and payroll treatment. Compare it with supplier invoices, payroll output and any P11D or year-end report. Investigate a benefit that appears in both payrolled data and a separate return, or one that continues after the employee stopped receiving it.

Where a benefit is provided through salary sacrifice, document the contractual change and the point at which the employee became entitled to the benefit. A payroll code does not decide whether an exemption applies. Keep the calculation, official guidance and approvals used for the tax year so a later reviewer can reproduce the result.

Reconcile the final payroll report to the benefit register before closing the year.

The employer should give payroll a controlled list of benefits and an owner for each input; unsupported manual overrides are a common source of duplicate reporting.

Employer implementation checklist

Before the tax year starts, list every benefit that may be payrolled and identify the employees receiving it. Confirm the benefit value, availability dates, employee contribution, any private-use restriction and whether the item has a statutory exemption. Keep the calculation beside the payroll input rather than in an unlinked spreadsheet. If an employee joins or leaves during the year, record the exact dates so the benefit is not treated as available for the full year by mistake.

Tell employees what will change in their payslips and tax codes. Payrolling changes the timing and presentation of tax; it does not make a taxable benefit disappear. Employees should compare the cumulative benefit value with their own records and tell payroll about a missing contribution or a benefit that stopped. Employers should reconcile payrolled benefits with the year-end reporting they still have to make and investigate duplicate entries before submission.

Review the list after a policy change, a new provider, a company-car replacement, a salary-sacrifice change or a return from leave. Keep the official guidance and calculation assumptions used for the year. A payroll configuration is not evidence that the underlying benefit qualifies, so preserve the contract, invoice, valuation and employee-evidence trail as well.

Read the Company Car BIK guide→ for employee benefit valuation context, then use the Company Car BIK Calculator→ and Employer NI Calculator→ for planning illustrations. For general payroll obligations, check the latest HMRC mandatory payrolling guidance.

Official sources

• HMRC: Mandatory payrolling of benefits in kind and expenses
• HMRC: Phased introduction of mandatory payrolling
• HMRC: Default operation of mandatory payrolling
• HMRC: Reporting requirements
• HMRC: Getting ready for mandatory payrolling
• HMRC Agent Update 147

These HMRC pages are the official references for the proposed payrolling timetable, operation, reporting and preparation steps. Check the latest legislation and guidance before configuring payroll.