The P11D Is Disappearing. Is Your Payroll Team Ready for Real-Time Benefits Reporting?
- 5 Min Read
HMRC’s move towards real-time reporting of employee benefits will put greater pressure on payroll accuracy, data and expertise. With the first phase arriving in April 2027, employers need to start preparing now.
- Author: HRD Connect
- Date published: Sep 10, 2026
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For millions of employees, benefits such as company cars and private medical insurance appear as another line in their employment package. Behind the scenes, however, calculating the tax attached to them is about to change significantly.
From 6 April 2027, employers will have to report certain benefits in kind through payroll software in real time, beginning with company cars and fuel, vans and van fuel, and employer-provided medical benefits.
It marks the beginning of HMRC’s move away from the traditional system under which most benefits are reported annually through P11D forms. Most remaining benefits will enter mandatory payrolling from April 2028, while the timetable for loans and accommodation is yet to be confirmed.
With seven months until the first phase begins, the Chartered Institute of Payroll Professionals (CIPP) is using National Payroll Week to highlight the risks for employers that are not adequately prepared for the transition.
For HR leaders, this is not simply a payroll software update. It puts greater pressure on teams to get employee data and tax calculations right as they happen, making payroll capability a workforce issue as much as a compliance one.
From correcting mistakes later to getting payroll right now
Under the current system, most benefits in kind can be reported after the tax year has ended, with Income Tax generally collected through subsequent PAYE adjustments.
Real-time payrolling changes that rhythm.
From April, the taxable value of benefits covered by the first phase will feed into payroll, with Income Tax and Class 1A National Insurance contributions reported through employers’ Full Payment Submissions.
The intention is to make the tax system more transparent and efficient. But it also means payroll teams will have less room for retrospective corrections before mistakes reach employees.
“While the change is designed to close the gap between when tax is owed and when it’s paid, it also demands far greater accuracy, in-year data quality and technical understanding than the current system,” said Mathew Akrigg, Policy and Advisory Leader at the CIPP.
For employees, the consequences of errors could be immediate. An incorrect benefit value or outdated employee record could result in the wrong amount of tax appearing in a payslip.
Payroll needs better data, not just new software
The reform therefore requires employers to look beyond their payroll platform.
Payroll teams depend on information from across an organisation. HR may hold employee records, finance may manage benefit costs and external providers may administer private medical insurance, company vehicles or other schemes.
Under an annual process, organisations have more time to reconcile those different sources. Real-time reporting increases the importance of getting accurate information to payroll at the right point in the pay cycle.
Employers should now be mapping where benefits data originates, who owns it and how quickly changes reach payroll.
A new company car, a change to medical cover or an employee leaving the business should trigger a reliable flow of information rather than relying on manual corrections months later.
HMRC itself is warning organisations not to underestimate the preparation required. Its latest guidance says employers need to ensure their processes are robust enough to handle real-time reporting and recommends preparing as early as possible.
Is payroll expertise being undervalued?
The change also raises a broader question about how organisations view payroll.
Payroll can sometimes be treated primarily as an administrative function. But when errors directly determine how much money employees receive, the consequences are financial, regulatory and personal.
The CIPP argues that qualified expertise will become increasingly important as the new system takes effect.
“This is the biggest shake up to tax on employee benefits in a decade and we are concerned that, without qualified, experienced payroll professionals overseeing it, there will undoubtedly be errors which will see employees paying the wrong amount of tax on their benefits, without them realising it,” Akrigg said.
“The best way to avoid that is to ensure businesses have in place trained payroll experts who are the safeguard that prevents employees being over or under-taxed.”
That should prompt HR leaders to assess whether payroll teams have sufficient capacity, training and access to the information they need, rather than assuming compliance sits solely with payroll itself.
What should employers do before April?
The phased introduction gives employers some additional breathing room, but April 2027 is close enough that preparation should already be underway.
HR and payroll leaders should first establish which employees receive benefits included in the first phase and review the quality of the data attached to them. They should then map how changes to those benefits are communicated between HR, payroll, finance and third-party providers.
Testing payroll systems and processes before implementation will also be important, as will explaining the change to affected employees. Workers accustomed to benefits being reflected through their tax code may notice changes to their payslips and need to understand why their tax is being calculated differently.
Employers should also continue monitoring HMRC guidance as further detail emerges ahead of implementation.
The move to real-time reporting is ultimately intended to modernise a system built around annual reconciliation. But modernisation also transfers responsibility closer to the moment employees are paid.
For HR, the lesson is simple: payroll accuracy is about to become more immediate and more visible.
April 2027 may be a tax deadline, but preparing for it is a people, skills and systems project that needs to start well before then.
