P60s and Benefits in Kind: A 2026 Data Checklist

Year-end payroll admin doesn't have to feel like a scramble. Here's exactly what data you need to gather, which deadlines matter, and how to hand your accountant a clean, complete file, with no last-minute panic required.

Every spring, the same questions land in the inboxes of company directors and owner-managed business owners across the UK. What's a P60 again? When's the P11D deadline? What data do I actually need to pull together?

If that sounds familiar, you're not alone. The payroll year-end window is tight, the paperwork is specific, and the penalties for getting it wrong are real. This blog walks you through everything you need to know for the 2025/26 tax year, with a practical checklist you can act on today.

P60s in Plain English…and the 31st May Deadline

A P60 is a summary of an employee's total pay and deductions for the tax year. It shows gross pay, the income tax deducted, National Insurance contributions, and any statutory payments such as statutory sick pay or statutory maternity pay. Every employee who is on your payroll on 5 April 2026, the last day of the tax year must receive one.

The deadline is 31st May 2026. By that date, you must have provided a P60 to every qualifying employee, including yourself if you're a director taking a salary through PAYE.

A few points directors often overlook:

• You don't send P60s to HMRC. They go to your employees. HMRC already has the information through your Real Time Information (RTI) submissions throughout the year.

• Leavers don't get a P60. If someone left before 5 April 2026, they should already have received a P45. Only employees still employed on 5 April receive a P60.

• Digital delivery is fine. You can provide P60s electronically, but the employee must be able to print a copy if they need one.

The P60 matters because your employees need it for self-assessment tax returns, mortgage applications, and tax credit claims. Getting it wrong, or getting it late causes problems that ripple outward.

Source: GOV.UK — P60 guidance

Benefits in Kind and P11D Reporting Deadlines for 2025/26

A benefit in kind is any non-cash perk that an employee or director receives because of their employment. Think company cars, private medical insurance, interest-free loans above £10,000, or gym memberships paid by the business. If the company is providing something of value that isn't salary, it almost certainly counts.

These benefits are reported to HMRC on a P11D form, one for each employee who received a reportable benefit during the 2025/26 tax year.

Here are the key dates:

Submit P11D and P11D(b) forms to HMRC 6 July 2026

Provide a copy of the P11D to the employee 6 July 2026

Pay Class 1A National Insurance on benefits 22 July 2026 (electronic payment) or 19 July 2026 (postal payment)

The P11D(b) is a separate return that summarises the total Class 1A National Insurance contributions your company owes on the benefits you've reported. Even if you only have one employee receiving benefits and that employee is you, both forms still need filing.

Miss the 6 July deadline and you're looking at an initial penalty of £300 per form, with further penalties of up to £60 per day for continued failure. The Class 1A NIC payment also attracts interest and penalties if it's late.

Source: GOV.UK — P11D and P11D(b) guidance

Payrolling Benefits vs P11D Reporting: Which Applies to You?

This is a particularly important section for 2025/26 because mandatory payrolling of benefits in kind takes effect from April 2026.

Since April 2016, employers have had the option to payroll benefits in kind, which means reporting the taxable value of the benefit through the regular payroll rather than filing P11D forms at year end. If you are payrolling a benefit, the tax is collected in real time through PAYE, just like salary.

Here's what matters for 2025/26:

• If you registered to payroll specific benefits with HMRC before 6 April 2025, you do not need to include those benefits on a P11D for the 2025/26 tax year. The tax has already been handled through payroll.

• You still need to file a P11D(b) to report and pay Class 1A National Insurance on payrolled benefits. Payrolling removes the P11D requirement for income tax purposes, but the employer NIC obligation remains.

• If you did not register in advance, you must report benefits on P11D forms as normal for 2025/26.

The critical change: From April 2026, HMRC is making payrolling of benefits in kind mandatory for all employers. This means 2025/26 is the final tax year where P11D reporting of benefits is the default. From 2026/27 onwards, you will be required to process benefits through your payroll.

If you haven't already started payrolling benefits, now is the time to prepare. Review your payroll software capabilities, ensure your benefit values can be accurately calculated each pay period, and speak to your accountant about the transition. Getting a dry run in during 2025/26, even voluntarily will make the mandatory switch far smoother.

Source: GOV.UK — Payrolling benefits in kind

Common Errors That Trigger Penalties — and How to Avoid Them

HMRC penalties for payroll year-end failures are formulaic and unforgiving. Here are the mistakes that catch small companies out most often:

1. Missing the P11D Filing Deadline

Filing P11D forms even one day after 6 July triggers an automatic penalty. For small employers, this is typically £300 per form, and it escalates from there. Set a reminder for mid-June and treat the real deadline as two weeks earlier than 6 July.

2. Incorrect or Incomplete Benefit Values

Estimating a benefit's value instead of using the correct HMRC calculation method, particularly for company cars is a common source of error. Use the exact CO2 emissions figure from the V5C registration document. Use the manufacturer's list price, not the price you paid. Get the numbers right.

3. Forgetting to Report Director's Loan Account Balances

If your director's loan account was overdrawn at any point during the year and exceeded £10,000, there is a benefit in kind to report. This is frequently missed in owner-managed businesses where the boundary between personal and business spending is blurred.

4. Not Reconciling RTI Submissions

If your FPS submissions contain errors, perhaps a wrong tax code was used for several months, or a new starter's NI number was entered incorrectly. Those errors carry through to the P60 and may cause discrepancies with HMRC's records. Run the reconciliation before you close the year.

5. Late Payment of Class 1A NIC

Even if your P11D and P11D(b) are filed on time, paying the Class 1A NIC after the July deadline attracts interest and potentially a penalty. Set up a calendar reminder and ensure the funds are available.

6. Issuing P60s Late or Not at All

The £300 penalty structure applies here too. It's also a legal requirement, employees have a right to their P60, and you have a statutory obligation to provide it by 31 May.

7. Failing to Prepare for Mandatory Payrolling

While not a penalty issue for 2025/26 specifically, employers who don't prepare for the April 2026 mandatory payrolling requirement risk being non-compliant from day one of the 2026/27 tax year. Treat this year as your preparation window.

Source: GOV.UK — Penalties for late filing and payment

Get Ahead of the Deadlines

The directors and business owners who find year-end payroll painless are the ones who start gathering data in March, not June. Use the checklists on our website https://www.j-benn.co.uk/resources, pull your documentation together early, and give your accountant everything they need in one clean handover.

If you'd like us to review your payroll setup and benefits data before the deadlines, book a discovery call with J-Benn Finance and we'll map out a simple compliance plan for your company. Whether it's checking your P11D figures, reconciling your payroll, or preparing you for mandatory payrolling from April 2026, we'll make sure nothing falls through the cracks.