What Is Changing & Why It Matters
- From 6 April 2027, the UK government mandates that most benefits-in-kind (BiKs) will be reported and taxed through payroll, rather than via end-of-year P11D forms. (gov.uk)
- This reform applies to many perks: company cars, private medical insurance, loans; anything traditionally listed on P11D could shift into payroll processing. Simplifies for HMRC; demands early preparation for employers. (gov.uk)
Crucial Deadlines for Employers & Payroll Agents
| Date | Milestone |
|---|---|
| 5 April 2026 | Deadline to register voluntarily to payroll BiKs for the 2026-27 tax year. After this, registration won’t be accepted for that year. (gov.uk) |
| 6 April 2027 | Mandated use of payroll for most BiKs begins. Non-compliance risks penalties. (gov.uk) |
Practical Steps for Compliance
- Audit current BiKs: Identify all benefits currently reported via P11D; assess which will migrate into payroll under new rules.
- Register before 5 April 2026, even if you plan to start using payroll in the next tax year, to secure the voluntary pathway and avoid rushed transitions. (gov.uk)
- Update payroll systems: Ensure payroll software can handle BiKs reporting and accommodate combined Income Tax and Class 1A NICs via payroll, not via P11D(b). Employers may need to test and train payroll teams.
- Communicate with employees: Employees used to P11D may see different timing or deductions; clarity will reduce disputes.
Common Pitfalls and How to Avoid Them
- Waiting until late 2026 to start planning—leaving too much to system upgrades.
- Assuming all BiKs are included; check definitions and exemptions carefully.
- Overlooking Class 1A NICs which are often forgotten when changing from end-of-year to payroll basis.
Example Scenario
- A small tech company provides employee benefits such as company-funded travel, medical insurance, and a vehicle. Currently, they submit P11D forms after 5 April. To prepare, they audit their P11D items, estimate additional payroll tax/NICs costs, update payroll contracts in Spring 2026, register by 5 April, and run a dry-run payroll-based projection.
Bottom Line
These changes aim to smooth and modernize the handling of benefits-in-kind for employers and HMRC. Acting early reduces risk, spreads cost and ensures accurate reporting. Starting preparations now through spring 2026 puts you in a strong position.