What must employers do for mandatory payrolling of benefits from April 2027?

From 6 April 2027, employers must report and pay Income Tax and Class 1A National Insurance Contributions on most benefits in kind through their live payroll runs using the Full Payment Submission (FPS). You must stop using end-of-year P11D forms for standard benefits. This sits alongside a wider set of tax-free and tax-efficient benefit categories that are not affected by the mandate at all. See tax-efficient employee benefits in the UK for 2026 for what still falls outside payrolling entirely.

This is also one of several compliance deadlines landing on payroll and contractor administration around the same period. See what CIS changes happened in April 2026 for contractors and accountants for another one.

Employers need to calculate the cash equivalent of each benefit at the start of the tax year, divide it across their pay periods, and deduct the tax in real time. Upgrading to compliant software like BrightPay by Bright ensures your firm can handle these mandatory calculations and mid-year adjustments automatically.

This blog is part of our series on Payroll Compliance: Payrolling Benefits Regulations and Practices.

How does mandatory payrolling change the current P11D system?

Instead of looking backwards, you process the tax in real time. You calculate the exact cash value of the benefit at the start of April. You then divide that total by the number of pay periods in your calendar. You include this figure in every FPS alongside the employee’s normal salary.

The tax is deducted directly from their wages in the exact period they receive the benefit. For employees, this stops confusing tax code changes. For payroll teams, it adds a new layer of complexity. You must now manage benefit values actively throughout the year, rather than ignoring them until the year-end forms are due.

What is the 2027 double-tax trap and how can employers avoid it?

The shift to real-time taxation creates a massive temporary problem that most employers do not see coming. If not managed carefully, your staff will complain about being taxed twice.

During the 2026/27 tax year, most businesses will still use P11D forms to report benefits. HMRC will naturally adjust your employees’ 2027/28 tax codes to collect the tax owed for those 2026/27 perks. However, when April 2027 arrives, mandatory payrolling begins. Those exact same employees will suddenly have tax deducted from their live payslips for their 2027/28 benefits.

If HMRC fails to update the tax codes in time, the employee pays twice. They pay once through the lingering 2026/27 code adjustment, and once through the new real-time deduction. HMRC has promised to remove these benefit-in-kind adjustments before the mandate starts. However, you cannot rely entirely on this happening smoothly. Payroll teams must actively monitor the tax codes of affected employees. You must be ready to flag any discrepancies to HMRC the moment April 2027 begins.

Which employee benefits are included in the 2027 payrolling mandate?

From April 2027, you must process the following items through your live payroll:

• Company cars

• Car fuel

• Vans

• Van fuel

• Employer-provided medical benefits

You cannot payroll employment-related loans or employer-provided accommodation. These two specific perks will continue to use the traditional P11D reporting system until HMRC announces a future update. This means payroll teams must carefully separate their benefit registers. You must know exactly which perks go through the FPS and which remain on the legacy forms.

What features must your payroll software include to handle 2027 benefit changes?

From April 2027, your software must be able to accept the exact cash equivalent value for different benefit types against individual employee profiles. It must automatically divide that annual value across your specific pay periods, whether you run weekly, fortnightly, or monthly payrolls.

Crucially, the software must handle mid-year changes smoothly. If an employee upgrades their company car in August, your software needs to recalculate the remaining pay periods instantly. It must also generate a dedicated end-of-year correction process. HMRC is building a new mechanism to fix discrepancies between reported values and actual values, and your software must support this. Finally, it needs the capability to report Class 1A NICs on benefits through the FPS in HMRC’s newly specified format.

This is one of several legislative changes a payroll platform needs to absorb without a manual workaround. See what makes a future-proof payroll platform for the fuller checklist.

How should employers prepare for mandatory payrolling during the 2026/27 tax year?

First, build a comprehensive register of every single benefit your company provides. Note down the cash equivalent values and identify which employees receive them. Separate the loans and accommodation perks from the standard benefits, as these follow different rules.

Next, sit down with your software provider. Confirm that your system will be fully compliant with the April 2027 mandate. Discuss exactly how you will process mid-year changes, such as when an employee cancels their medical insurance in November.

Communication is also vital. Brief your staff well before April 2027. Explain clearly that their payslips will look different and that they will see new benefit-related tax deductions. Reassure them that this is not a tax increase, but simply a change in how HMRC collects the money. Finally, keep a close eye on HMRC tax code notices in the weeks leading up to the changeover to catch any double-taxation errors early.

How does BrightPay by Bright compare to alternative payroll software?

When preparing for major legislative changes, the software you choose dictates how smoothly your firm adapts. Outdated desktop systems often require clunky manual workarounds to handle mid-year benefit changes or complex real-time FPS submissions.

BrightPay by Bright compares incredibly favourably to older alternatives because it actively automates these compliance hurdles. Because it’s in the cloud, it automatically applies any new legislation to the software while you work int he background. Instead of battling with disjointed systems, BrightPay by Bright gives accounting practices, bureaus, bookkeepers and employers a reliable, automated path through the 2027 mandatory payrolling transition.

This content may have been developed with the assistance of AI tools. Content is reviewed by a member of the Bright team before publication. Guidance on legislation can be obtained from your industry body.