Tax collected in real time
Instead of waiting for an annual P11D adjustment, taxable benefits in scope are reflected in employees’ payroll calculations during the year.
Benefits in kind · UK payroll transition
Payrolling Benefits in Kind: The UK Employer Guide to the 2027 and 2028 Rules
Prepare for mandatory payrolling of benefits in kind through Real Time Information, including company cars, fuel, vans, medical insurance, P11D, P11D(b) and Class 1A National Insurance.
Mandatory payrolling BIK
What changes from 6 April 2027?
From April 2027, most employers providing medical benefits, company cars, vans, car fuel or van fuel will need to calculate taxable benefit values during the tax year, collect Income Tax through payroll and report the information to HMRC using Real Time Information.
Monthly benefit data
Payroll teams need accurate, timely information about benefit availability, changes, leavers, vehicles, fuel and medical cover before each submission.
Phased implementation
Most remaining benefits are expected to move into mandatory payrolling from April 2028, while employer-provided loans and accommodation remain on annual reporting until later arrangements.
See the latest GOV.UK policy update on mandatory RTI reporting from April 2027.
Transition timeline
A practical payrolling benefits implementation plan
Now: inventory benefits
List every benefit, provider, employee, start date, end date and valuation method. Reconcile payroll records with HR, fleet and finance information.
Before April 2027: test controls
Confirm payroll software capability, assign data owners, agree cut-off dates, test calculations and document corrections, leavers and mid-month changes.
During 2027/28: monitor RTI
Review benefit values and submissions monthly, communicate taxable amounts to employees and retain evidence for year-end Class 1A NIC reporting.
P11D and P11D(b)
How annual benefit reporting interacts with real-time payroll
Under the current system, many employers report taxable benefits on form P11D after the tax year and report employer Class 1A NIC on P11D(b). The transition changes when Income Tax information is reported, but employers still need strong year-end reconciliations and must follow the final rules for Class 1A NIC reporting.
P11D
Historically used to report benefits and expenses provided to individual employees. Mandatory payrolling reduces reliance on annual employee reporting for benefits in scope.
P11D(b)
Used to declare the employer’s Class 1A National Insurance liability and confirm that taxable benefits have been considered. Check the final transition requirements each year.
Reconciliation
Reconcile payroll values to provider invoices, fleet records, general-ledger accounts and HR data before year end. Investigate differences while evidence is accessible.
Benefit categories
Company cars, fuel, vans and private medical insurance
Company cars
Maintain vehicle list price, approved CO₂ emissions, fuel type, electric range where relevant, availability dates, capital contributions and private-use payments.
Car and van fuel
Distinguish business mileage reimbursement from fuel provided for private use. Fuel-benefit calculations can create substantial taxable values unless private fuel is fully made good under the rules.
Medical insurance
Allocate premiums and cover accurately when employees join, leave or change grade. Provider renewals and mid-year adjustments need a reliable route into payroll.
Company vans
Confirm whether private use creates a taxable van benefit and whether fuel is provided. Retain evidence supporting exemptions or restricted private use.
Trivial benefits
Apply the statutory conditions carefully. Do not treat cash, cash vouchers, contractual rewards or salary-sacrifice benefits as exempt merely because the value is small.
Other benefits from 2028
Build a complete inventory now so benefits entering the later phase can be tested without repeating the whole implementation exercise.
Class 1A NIC
Employer National Insurance and benefit valuation controls
Payrolling a benefit does not remove the employer’s National Insurance exposure. Finance and payroll teams need consistent valuations, correct employee allocation and a documented reconciliation between payroll, P11D(b), provider records and the nominal ledger.
- Confirm which benefits are taxable, exempt or subject to special valuation rules
- Record availability dates and employee contributions promptly
- Reconcile payroll benefit values to supplier invoices and HR data
- Separate business expenses from employee benefits
- Retain evidence for exemptions and made-good payments
- Review internationally mobile and off-payroll workers separately
Payroll operations
Create a monthly BIK data flow that can survive staff changes
The main challenge is operational: payroll cannot report information it receives late or in inconsistent formats. Establish named owners across HR, finance, payroll, fleet and benefit providers.
Cut-off calendar
Set dates for changes, approvals, provider files, payroll calculation, review and RTI submission. Define how late changes will be corrected.
Employee communication
Explain that taxable benefits affect take-home pay, when changes will appear and where employees can ask questions. Clear communication reduces avoidable payroll queries.
Software testing
Check benefit categories, pay-frequency handling, year-to-date values, starters, leavers, corrections and reporting outputs before the rules become mandatory.
Employer checklist
Twelve steps to prepare for the benefits-in-kind transition
- Appoint a BIK transition owner
- Create a complete benefit and employee inventory
- Map each benefit to the correct tax treatment
- Identify 2027 and 2028 implementation phases
- Confirm payroll software readiness
- Agree monthly provider and HR cut-off dates
- Clean employee, vehicle and benefit records
- Test sample calculations and RTI outputs
- Document starters, leavers and corrections
- Plan employee communications
- Reconcile Class 1A NIC and P11D(b) data
- Review official HMRC guidance before go-live
Benefits in kind FAQs
Questions UK employers ask about payrolling BIK
When does mandatory payrolling of benefits in kind start?
The first phase is planned from 6 April 2027 for medical benefits, company cars, vans and car or van fuel. Most remaining benefits are expected from April 2028, subject to final legislation and guidance.
Will employers still complete P11D forms?
Mandatory payrolling changes annual reporting for benefits in scope. Employers should follow the final HMRC rules for exceptions, corrections and transition-year reporting.
Does payrolling BIK remove Class 1A National Insurance?
No. Employers still need to calculate and report the relevant Class 1A NIC liability and reconcile it to payroll and benefit records.
How should employers prepare employee data?
Keep accurate benefit availability dates, valuations, contributions, vehicle details and employee identifiers, with monthly reconciliation to providers and HR systems.
Are accommodation and beneficial loans included from April 2027?
The published phased approach keeps employer-provided loans and accommodation on annual reporting until later arrangements are introduced.
Payroll accountants London
Make the BIK transition controlled, documented and employee-ready.
Price & Accountants supports employers with payroll, benefit data reviews, P11D and P11D(b), Class 1A NIC, RTI processes and wider employment-tax compliance.