Understanding P45, P60 & P11D: A Payroll Manager’s Reference Guide 

Statutory payroll forms — the P45, P60, and P11D — are mandatory documents UK employers must issue to employees and submit to HMRC. They record an individual’s pay, tax deductions, and benefits in kind across the tax year. For payroll managers, generating and distributing these forms accurately and securely is a core compliance duty, not an administrative afterthought. 

The stakes are practical and financial. Late P11D submissions attract penalties of £300 per month per form. Emailing unencrypted payroll data to employees is a UK GDPR breach that can draw an ICO investigation. And as HMRC moves towards mandatory payrolling of benefits from 6 April 2027, teams that have not yet modernised their approach to year end processing face a compressed transition window. 

This guide covers the operational requirements for each form, the deadlines that matter, the shift to payrolling benefits in kind, and the security obligations that make a self service portal no longer optional for most payroll operations. 

2025/26 Statutory Forms: Deadlines at a Glance 

The table below summarises the key deadlines and employer actions for the 2025/26 tax year (ending 5 April 2026). These dates should be built into every payroll team’s year end calendar. 

Note: electronic payment of Class 1A NIC via BACS must clear by 22 July 2026. Cheque payments must arrive by 19 July 2026. Late payment attracts interest and potential penalties. 

The P45: Managing Employee Offboarding 

The P45 is the document that formally closes an employment relationship for tax purposes. It tells the employee’s next employer — or the DWP if they claim benefits — exactly how much they earned and what tax they paid in the current tax year. Getting it wrong, or getting it late, creates a direct problem for the departing employee and a potential compliance issue for the current employer. 

When must a P45 be issued? 

Employers must provide a P45 without unreasonable delay when an employee leaves. In practice this means on the last day of employment, or as close to it as the payroll run allows. The statutory standard is set by regulation, not by internal process convenience. 

Part 1 of the P45 is submitted to HMRC electronically via the Full Payment Submission or a separate submission route within the payroll software. Parts 2 and 3 are given directly to the employee. The employee takes Parts 2 and 3 to their new employer, who uses them to set the correct tax code from day one. 

What information does a P45 contain? 

The P45 is built from the employee’s year to date payroll data at the point of leaving. The four parts all carry the same core information: 

• PAYE reference and employer name 
• Employee name, address and National Insurance number 
• Date of leaving 
• Tax code in use at leaving date 
• Total pay in the current tax year to date 
• Total tax deducted in the current tax year to date 
• Whether the employee is subject to Scottish or Welsh rate of income tax 

The accuracy of this data depends entirely on the integrity of the payroll record up to the leaving date. Any uncorrected mid-year payroll errors will carry into the P45 and may cause tax code problems at the employee’s next employer. It is good practice to reconcile year to date figures before finalising the leaving payroll run. 

The risks of delay or inaccuracy 

A delayed P45 leaves the employee on an emergency tax code at their new job, meaning they will likely overpay income tax until the code is corrected. While this resolves through the tax system eventually, it causes immediate financial inconvenience to the employee and reflects poorly on the issuing employer. 

An inaccurate P45 — particularly one showing incorrect year to date pay or tax figures — can trigger downstream errors in the new employer’s payroll and may require the employee to contact HMRC directly to correct their tax record. In cases where an error leads to a loss of tax revenue, HMRC can open an employer compliance enquiry. 

The P60: The End of Year Certificate 

The P60 is issued once a year, after the tax year ends on 5 April. It is the definitive record of an employee’s earnings and deductions for the whole tax year and is one of the most frequently requested documents in employees’ financial lives — used for mortgage applications, self assessment tax returns, tax credit claims, and benefits checks. Employers cannot avoid issuing it, and they cannot issue it late. 

The 31 May deadline 

All employees on the payroll at 5 April 2026 must receive a P60 by 31 May 2026. This applies to every current employee, including those on maternity leave, long-term sick leave, or any other form of absence. Employees who left before 5 April 2026 do not receive a P60 from the employer they left; they received a P45 on departure. 

HMRC has approved electronic issuance of P60s since 2016. A P60 issued via a secure self service portal, from which the employee downloads their own copy, fully satisfies the employer’s obligation. It does not need to be printed and posted. The portal must be genuinely secure and the employee must have clear, unobstructed access to it by the deadline. 

Why employees rely on their P60 

For employees, the P60 is one of the most consequential documents their employer produces. Mortgage lenders routinely require two or three years of P60s as proof of income for affordability assessments. HMRC uses it as the reference point for self assessment queries. Department for Work and Pensions assessors use it to verify earnings in benefit claims. 

An inaccurate P60 — even by a small amount — can result in a rejected mortgage application, a tax underpayment notice, or a delayed benefit claim. Payroll managers should treat the P60 as a precision document, not a routine output, and should complete a final year end reconciliation before generating the forms. 

The table below summarises the key differences between the P45 and P60 for quick reference. 

The P11D and P11D(b): Reporting Benefits in Kind 

The P11D reports the cash equivalent of taxable benefits provided to employees and directors during the tax year. Where the employer provides benefits outside payroll — such as company cars, private medical insurance, or interest-free loans — the P11D quantifies the value of those benefits so that HMRC can charge the employee the correct income tax and the employer can calculate and pay Class 1A National Insurance Contributions. 

What constitutes a benefit in kind? 

A benefit in kind is any non-cash item of value provided by the employer to the employee (or their family) by reason of their employment. Common examples include: 

• Company cars and private fuel — valued using HMRC’s CO2-based benefit calculation tables 
• Private medical or dental insurance — reported at the cost to the employer 
• Interest-free or low-interest loans — a benefit arises where the outstanding balance exceeds £10,000 in the tax year 
• Living accommodation provided to the employee 
• Employer-funded subscriptions and memberships where not wholly for business purposes 
• Assets made available for private use such as laptops, phones used beyond minimal private use, and company vans used for private journeys 

The key principle is that the benefit must be valued correctly using HMRC’s prescribed methodology for each benefit type. Using the wrong valuation basis is one of the most common P11D errors and will result in an incorrect Class 1A liability. 

The 6 July submission deadline 

P11Ds must be submitted to HMRC online by 6 July 2026. A copy must also be provided to each affected employee by the same date. Paper returns are no longer accepted; the submission must be made through HMRC’s PAYE Online service or via approved payroll software. 

The P11D(b) is the accompanying declaration form that consolidates the total Class 1A NIC liability across all employees. It must be filed alongside the individual P11Ds or separately where the employer has payrolled all benefits (see below). The P11D(b) is the document that authorises HMRC to collect the Class 1A NIC payment. 

Late P11D submission attracts an automatic penalty of £300 per month per form. Where the delay continues, HMRC may also apply a further penalty of £60 per day. These penalties are not discretionary; they apply from the first day after the deadline. 

The Class 1A NIC payment deadline 

Class 1A NICs are paid at 15% on the total taxable value of all benefits in kind reported on P11D(b). The payment deadline is 22 July 2026 for electronic payments and 19 July 2026 for cheque. Late payment attracts interest from the due date. 

Class 1A NICs are an employer-only cost. They are not deducted from employee wages and cannot be passed to employees. The liability is calculated on the cumulative benefit values declared across all P11D forms for the year. 

Payrolling benefits: the transition already under way 

Payrolling benefits means bringing the taxable value of benefits in kind into the payroll each month, so that the employee pays income tax on them through PAYE in real time rather than through a P11D adjustment at year end. For employers who have already registered and implemented voluntary payrolling, the individual P11D form is no longer required for payrolled benefits. 

Voluntary payrolling was available for 2025/26, with registration required by 5 April 2026 for new registrations. From 6 April 2027, payrolling of benefits in kind becomes mandatory for all employers. This is a significant change to year end compliance obligations and affects every employer who currently relies on the P11D process. 

There is a critical point that is frequently misunderstood: payrolling benefits removes the individual P11D forms but does not remove the P11D(b) obligation. The Class 1A NIC liability still exists, and the P11D(b) is still required to declare and pay it. Employers who assume that payrolling eliminates all year end forms are incorrect and will miss the P11D(b) deadline. 

⚠️  Mandatory payrolling of benefits: key implications for 2026/27 preparation 

From 6 April 2027, all employers must payroll benefits in kind through PAYE in real time. 

• Individual P11D forms will no longer be required for 2026/27 onwards. 
• The P11D(b) remains required to declare and pay Class 1A NIC. 
• Employers not yet using payroll software that supports benefits in kind payrolling should begin their software evaluation and transition planning before April 2027. 

The Security Risks of Manual Distribution 

Statutory payroll forms contain some of the most sensitive personal data an employer holds: National Insurance numbers, bank account references, earnings history, and health-related benefit information. The method used to distribute them is a data protection decision, not just a delivery preference. 

The GDPR risk of emailing payroll forms 

Emailing a P60 or P11D as a PDF attachment — even in a password-protected file — creates a UK GDPR risk that most employers underestimate. Unencrypted email is not a secure transmission method. If the email is sent to the wrong address, intercepted, or forwarded, the employer has caused a personal data breach. Under UK GDPR, a data breach involving financial or tax data must be assessed and, where it meets the threshold, reported to the Information Commissioner’s Office within 72 hours. 

The ICO can issue fines of up to £17.5 million or 4% of global annual turnover (whichever is higher) for serious UK GDPR violations. Even where a formal fine is not issued, an ICO investigation generates significant management time, legal costs, and reputational exposure. 

The operational cost of printing and posting 

For employers still issuing paper forms, the year end P60 run involves printing, collating, enveloping, and posting individual documents to every current employee. For a payroll of 200 employees this is a meaningful administrative exercise. For a payroll bureau processing multiple clients simultaneously, the cumulative cost in staff time is substantial. 

Paper P60s also create a permanent physical data management problem. Employees who do not receive their form, receive it at a wrong address, or lose it must request a replacement. There is no digital copy to retrieve. The replacement process requires the payroll team to regenerate the form and reissue it, at further cost. 

Audit trails and compliance evidence 

A self service portal provides a timestamped record of when each form was made available and, in many cases, when the employee first accessed it. This creates an audit trail that a paper posting process cannot replicate. In any HMRC or ICO enquiry about whether forms were issued on time and securely, a portal log is a far stronger piece of evidence than a stack of recorded delivery receipts. 

The Cost of Doing Nothing 

For a payroll team managing year end on manual or legacy processes, the combined exposure is straightforward to quantify. The administrative overhead of printing and distributing 200 P60s, preparing and submitting P11Ds for a 30-benefit workforce, and reconciling year to date figures without automated software support runs to dozens of hours of skilled payroll time. At the cost of a qualified payroll professional’s time, this alone exceeds the cost of a modern platform. 

Add the GDPR exposure from a single misdirected P60 email. Add a P11D penalty of £300 per month per form for a late submission. Add the employee relations cost of a delayed P45 that triggers an emergency tax code. The risk profile of manual statutory forms processing is not theoretical; it materialises predictably, year after year, in teams that have not modernised their tooling. 

The transition to mandatory payrolling of benefits from April 2027 removes the option to continue on legacy P11D processes indefinitely. Teams that have not adopted payroll software with integrated benefits payrolling will face a forced migration under time pressure in 2026. The business case for acting now, rather than at the last moment, is material. 

Secure Digital Distribution with IRIS 

Staffology Payroll is a cloud-based payroll platform that automatically generates P45s, P60s, and P11Ds from the payroll record, and distributes them to employees securely through an integrated self service portal. Employees access their forms directly, via their own authenticated portal login, without any document ever passing through an email inbox. 

P45s are generated and submitted to HMRC via the Full Payment Submission within the same payroll run that processes the leaving date. There is no separate manual step. P60s for all current employees are produced as a batch at year end and made available in the employee portal by a set date, with a system record confirming availability for audit purposes. 

For P11D preparation, Staffology supports the capture of benefit values throughout the year, calculates the taxable cash equivalent using HMRC’s prescribed methods, and produces the P11D and P11D(b) for online submission. For employers already using voluntary payrolling of benefits, the platform handles the real-time payrolling calculation and generates the P11D(b) for Class 1A NIC purposes at year end. 

For businesses that want to remove year end form management from their internal workload entirely, IRIS Payroll Services provides a fully managed payroll and year end service delivered by CIPP-accredited payroll professionals. The service covers P60 production and distribution, P11D preparation and submission, Class 1A NIC calculation, and ongoing compliance management throughout the year. 

IRIS holds CIPP Gold accreditation, reflecting the standard of payroll expertise applied across both the software and the managed service offering. 

Statutory Payroll Forms: Frequently Asked Questions 

Can an employer issue a P60 electronically? 

Yes. HMRC has approved the electronic issuance of P60s since 2016. An employer may issue a P60 via a secure self service portal provided the employee has clear access to the portal and the form is available by 31 May. The employer does not need to print or post the document. Emailing a PDF is not recommended, as unencrypted email is not a secure distribution method under UK GDPR. A portal-based delivery creates an audit trail; an email delivery does not. 

What should an employer do if an employee loses their P45? 

Employers cannot reissue a P45 once it has been issued. If the employee needs confirmation of their pay and tax figures from the period of employment, the employer should provide a written statement of earnings and tax deducted to date, signed by the employer. The employee’s new employer should be advised to use a starter checklist to determine the correct emergency tax code until HMRC updates the employee’s record. The employee may also contact HMRC directly to request their year to date figures. 

Are employers required to submit a nil return for P11D(b)? 

Not in every case, but employers should not simply do nothing. If the employer has provided no taxable benefits to any employee or director during the year and has no Class 1A NIC liability, no P11D(b) is required. However, if HMRC has issued a formal notice to file a P11D(b), the employer must respond — either by submitting the form or by contacting HMRC directly to confirm nil liability. Ignoring a notice can result in a penalty even where nothing is owed. 

If the employer has payrolled all employee benefits during the year, individual P11D forms are not required, but the P11D(b) is still required to declare and pay the Class 1A NIC liability. Payrolling benefits removes the individual P11D obligation; it does not remove the P11D(b). 

Does voluntary payrolling of benefits eliminate the P11D(b) requirement? 

No. Payrolling benefits in kind removes the requirement to submit individual P11D forms for each employee whose benefits are payrolled. The Class 1A NIC liability remains, and the P11D(b) must still be submitted to HMRC by 6 July 2026 to declare the total liability and authorise payment. The Class 1A NIC payment remains due by 22 July 2026 (electronic). Employers who assume that payrolling eliminates all year end form obligations will miss the P11D(b) deadline and incur late filing penalties.