For many UK employers, reporting employee benefits has traditionally been an end-of-year exercise: collect the information, prepare P11Ds, calculate the Class 1A National Insurance liability and deal with the tax consequences after the tax year has finished.

From 6 April 2027, that process begins to change.

HMRC is moving selected benefits in kind into payroll reporting in real time, meaning employers will need to calculate and report taxable benefits alongside normal payroll rather than waiting for the annual P11D cycle. HMRC reinforced the message in its August 2026 Employer Bulletin, telling employers and agents that preparation should begin now.

Mandatory payrolling of benefits in kind begins on 6 April 2027 for company cars, car fuel, vans, van fuel and employer-provided medical benefits. Employers will report the relevant Income Tax and Class 1A National Insurance information through payroll and Real Time Information. Most other benefits will follow from April 2028, while loans and accommodation remain outside mandatory payrolling for now.

For businesses, this is not simply a new box to tick in payroll software. It changes when benefit information must be available, how payroll teams communicate with HR and finance, how employees see tax deducted from their pay and how quickly errors must be identified.

What Is Mandatory Payrolling of Benefits in Kind?

A benefit in kind is a non-cash benefit or perk provided to an employee or director that has a taxable value. Common examples include company cars, private medical insurance, fuel for private use and certain employer-provided assets or services.

Under the existing system, most taxable benefits are reported after the tax year using form P11D, with the employee's Income Tax generally collected through a later adjustment to their PAYE tax code. HMRC is now moving towards reporting and taxing benefits through payroll in real time.

That means the taxable value of a benefit will increasingly become part of the normal payroll process rather than a separate annual compliance exercise.

From April 2027, employers affected by phase one will need payroll systems and internal processes capable of dealing with benefits at the point employees are being paid.

For businesses that already outsource payroll, this is a good time to confirm whether their provider is ready for the transition. TaxVATReturn's Payroll Services support employers with PAYE, RTI submissions and ongoing payroll compliance.

Which Benefits Become Mandatory From April 2027?

HMRC has deliberately moved away from introducing mandatory payrolling for almost every benefit at once.

Following feedback from employers, payroll software providers and professional bodies, the government decided on a phased rollout.

The position currently looks like this:

HMRC states that mandatory payrolling for most remaining benefits in kind will begin from April 2028, while the timetable for employer-provided loans and accommodation will be confirmed separately.

That phased introduction is important because employers should prepare specifically for the benefits that affect them rather than assuming every existing P11D item moves into payroll next April.

Are P11Ds Being Abolished in 2027?

No — not completely.

This is one of the most important misconceptions employers should avoid.

For benefits that become subject to mandatory payrolling, the traditional P11D process will become much less relevant because the information will instead be reported through payroll.

However, P11D and P11D(b) reporting will continue in certain circumstances, including where employment-related loans or accommodation are not voluntarily payrolled. HMRC has also been considering how P11D processes may need to remain for particular specialist employment situations.

So the change should not be described as:

“P11Ds disappear in April 2027.”

A more accurate description is:

HMRC is gradually replacing annual P11D reporting with real-time payroll reporting for increasing categories of benefits.

That difference matters for employers with several different types of employee benefits.

Why Is HMRC Changing Benefits in Kind Reporting?

The existing P11D system creates a significant delay between an employee receiving a benefit and the tax being collected.

An employee may receive a taxable benefit throughout one tax year, but its effect on their tax position may not become fully visible until after the year has ended.

HMRC's broader tax-modernisation strategy increasingly favours real-time digital reporting, and mandatory benefits payrolling follows that direction. HMRC says the reform is intended to modernise the taxation of benefits, reduce reliance on end-of-year processes and make reporting more transparent and efficient.

There is a practical advantage for employees too.

Instead of receiving a later tax-code adjustment relating to a benefit received months earlier, tax can be collected more closely to when the benefit is actually provided.

But that only works effectively if employers have accurate information available at the right time.

Why April 2027 Could Create Problems for Unprepared Employers

The biggest challenge is unlikely to be pressing the submit button.

It will be getting accurate benefit information into payroll quickly enough.

Many benefit arrangements sit outside the payroll department today. Company cars may be managed by fleet teams. Private medical insurance may be organised by HR. Employee benefits may be renewed annually by finance. Some benefit costs may only become clear after invoices arrive from third-party providers.

Under annual reporting, there has historically been more time to assemble that information.

Real-time reporting shortens the gap considerably.

HMRC itself has warned employers not to underestimate the preparation required and says businesses should ensure payroll processes are robust enough to handle real-time benefits reporting.

[EXPERT TIP: Map where every employee-benefit figure originates before changing your payroll. If HR, finance, fleet providers and insurers supply information at different times, the reporting problem is operational—not simply a payroll-software problem.]

This is also why reliable bookkeeping support can become increasingly valuable. Payroll, bookkeeping and employee-benefit records need to reconcile rather than operating as completely separate systems.

How Will Benefits in Kind Be Reported Through Payroll?

The new system will use Real Time Information (RTI).

Employers already report salary and other payroll information through a Full Payment Submission (FPS). From April 2027, additional information relating to the mandated benefits will also need to flow through payroll reporting. HMRC has been refining the required data fields and technical specifications with payroll software developers.

The taxable value of the benefit generally needs to be allocated across the relevant pay periods so that the Income Tax effect is reflected progressively rather than dealt with after the year has ended.

This means employers should test whether their payroll system can:

• identify affected employees accurately;

• calculate the taxable value of each benefit;

• allocate the benefit across appropriate pay periods;

• process starters and leavers correctly;

• deal with changes during the year;

• correct previously reported information; and

• provide employees with understandable payroll information.

Employers setting up PAYE for the first time should also ensure their underlying registration is correct before adding further reporting complexity. TaxVATReturn provides PAYE registration support for businesses employing staff.

How Could Employees' Take-Home Pay Be Affected?

Employees need to be part of the preparation process too.

Mandatory payrolling can alter the way the tax on a benefit appears during the year. HMRC has specifically advised employers and agents to communicate with employees early so they understand how the phase-one changes may affect their tax codes and take-home pay.

Without communication, an employee may see their net pay change and assume payroll has made an error.

A professional rollout should therefore explain:

1. which benefit is being payrolled;

2. the taxable value being used;

3. when the new treatment starts;

4. how it affects PAYE deductions; and

5. what employees should do if they believe the benefit information is incorrect.

This is particularly important for company cars and private medical benefits, where taxable values can be significant.

What Happens If an Employer Makes a Mistake in 2027/28?

HMRC has recognised that the first year will involve adjustment.

For 2027/28, HMRC says employers will not be charged an inaccuracy penalty for errors relating to mandatory payrolling unless there is evidence of deliberate non-compliance. However, normal late-filing and late-payment penalties will still apply.

That is a useful transitional protection, but businesses should not interpret it as permission to treat the first year casually.

Incorrect benefit reporting can still affect employees' tax deductions, payroll reconciliations and the employer's Class 1A National Insurance position.

From later tax years, the normal penalty and interest framework is expected to apply more fully.

[EXPERT TIP: Treat HMRC's first-year penalty easement as time to refine a properly tested process—not as an extra year to postpone preparation.]

Where historic payroll or PAYE problems already exist, dealing with them before mandatory payrolling begins is preferable to allowing old discrepancies to mix with a new reporting regime. Businesses facing more serious HMRC queries can also review TaxVATReturn's HMRC investigation support.

What Should Employers Do Before April 2027?

The businesses most likely to experience problems are those that wait until March 2027 and then ask payroll to “switch on benefits.”

Preparation should begin much earlier.

Start by identifying every benefit currently provided to employees and directors. Separate the benefits entering phase one from those remaining outside mandatory payrolling. Then identify who currently owns the information: payroll, HR, finance, a fleet provider, an insurer or an external benefits platform.

Next, speak to your payroll software provider or accountant about their implementation timetable. HMRC has been updating technical specifications, and employers should make sure their software will support the required RTI reporting before the first affected payroll run.

You should also review your employee communications, benefit policies and reconciliation procedures.

For limited companies where director benefits interact with wider accounting records, your year-end reporting should remain consistent with payroll. TaxVATReturn's Company Accounts service can support that wider reconciliation.

Should Employers Payroll Other Benefits Voluntarily?

Potentially.

HMRC expects the online registration service for voluntary payrolling of non-mandatory benefits to open in November 2026 for the 2027/28 tax year. Employers will have until 5 April 2027 to register relevant benefits voluntarily.

That could allow some businesses to move more of their benefits reporting into a single payroll process rather than operating mandatory payroll reporting alongside multiple annual P11Ds.

But voluntary payrolling should not be adopted simply because it sounds administratively cleaner.

Businesses need to consider whether they receive benefit information accurately and quickly enough to report it through payroll. In some cases, retaining annual reporting for a non-mandated benefit may remain more practical until systems improve.

Why This Change Is Bigger Than a P11D Update

Mandatory payrolling of benefits in kind is part of a much larger shift in UK tax administration.

HMRC is moving more obligations towards digital records, real-time reporting and earlier correction of errors. Employers are therefore being asked to move away from a model where tax compliance is reconstructed after the year ends.

For payroll teams, that means the quality of information entering payroll matters increasingly throughout the year.

A business can have excellent payroll software and still produce incorrect reporting if the underlying employee records are poor.

The employers best prepared for April 2027 will therefore not simply be those that bought compliant software. They will be the ones that have connected payroll, HR, bookkeeping and finance into a reliable reporting process.

How TaxVATReturn Can Help Employers Prepare

For employers, mandatory benefits payrolling creates both a payroll challenge and a process challenge.

TaxVATReturn supports UK businesses with payroll processing, PAYE compliance, bookkeeping and company accounts. We can help businesses review their existing payroll setup, identify which benefits are affected from April 2027 and make sure the financial information behind payroll reporting remains accurate.

The objective is not simply to survive the first mandatory FPS.

It is to establish a process that continues working when more benefits move into mandatory payroll reporting from April 2028.

FAQs: Mandatory Payrolling Benefits in Kind

When does mandatory payrolling of benefits in kind start?

Phase one starts on 6 April 2027. Company cars, car fuel, vans, van fuel and employer-provided medical benefits will become subject to mandatory payroll reporting.

Will P11Ds still be required after April 2027?

Yes, in some circumstances. P11D and P11D(b) reporting will continue for certain benefits that remain outside mandatory payrolling, including relevant loans and accommodation where they are not voluntarily payrolled.

Do employers need to register for mandatory payrolling?

Employers generally will not need to register simply to payroll benefits that become mandatory from April 2027. Separate registration arrangements will apply where employers choose to payroll non-mandatory benefits voluntarily.

Will employers be fined for errors in the first year?

HMRC has introduced an easement for 2027/28: inaccuracy penalties relating to mandatory payrolling will generally not apply unless HMRC finds deliberate non-compliance. Existing late-filing and late-payment penalties still remain.

Final Thoughts

Mandatory payrolling of benefits in kind is no longer a distant payroll reform. April 2027 is now close enough that employers should be testing their processes, software and information flows.

The most immediate change affects company cars, fuel, vans and private medical benefits, but the direction goes much further. Most other benefits are expected to follow in April 2028.

Businesses that prepare early have an opportunity to make the transition relatively routine. Businesses that leave employee-benefit data sitting outside payroll until year-end may find the move to real-time reporting considerably more disruptive.

If your business provides taxable employee benefits and you are unsure whether your payroll is ready for April 2027, contact TaxVATReturn for professional payroll and PAYE support.

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This article is for general information and reflects HMRC guidance available in August 2026. HMRC has stated that further phase-one guidance will continue to be published, so employers should check the latest official requirements before implementation.