The Definitive Guide to UK Payroll & Workforce Compliance (2026/27) 

UK payroll and workforce compliance is the set of employer obligations covering PAYE, National Insurance Contributions, RTI reporting, statutory forms, workplace pensions and auto enrolment, holiday pay, statutory leave, and workforce record keeping. For payroll managers, HR directors, and bureau operators, compliance failure can lead to HMRC penalties, pension enforcement by The Pensions Regulator, Fair Work Agency inspection, Employment Tribunal claims, reputational damage, and avoidable payroll errors that affect employee trust and business continuity. 

2026/27 represents the most significant single year shift in employer compliance obligations in recent years. The Employment Rights Act 2025 has introduced new duties from April 2026. The Fair Work Agency is now operational with proactive inspection powers. The maximum protective award for failure to consult on collective redundancies has doubled. Further reforms, including a reduced unfair dismissal qualifying period, are confirmed for January 2027. Managing this landscape requires more than awareness of what has changed: it requires payroll and HR systems that can apply the changes accurately, maintain the audit trails that enforcement bodies now expect, and support the operational consistency that prevents errors from becoming liabilities. 

This guide is written for payroll managers, HR directors, finance teams, and payroll bureau operators responsible for employer compliance across payroll, pensions, leave, and workforce record keeping. It introduces each compliance topic, explains the current obligations and risks, and links to the IRIS spoke guides where each topic is covered in depth. 

Sources: HMRC employer guidance; The Pensions Regulator; GOV.UK employment law guidance; Employment Rights Act 2025; Pension Schemes Act 2026; ACAS 

What this guide covers 

• Why payroll and workforce compliance is more complex in 2026/27 
• Core payroll and HMRC compliance: PAYE, RTI, NIC, statutory forms, statutory pay 
• Workplace pensions and auto enrolment 
• HR compliance and employment law touchpoints: holiday pay, redundancy, records 
• Integrated payroll and HR technology 
• 2026/27 compliance calendar 
• Frequently asked questions 

Why Payroll & Workforce Compliance Is More Complex in 2026/27 

Every tax year brings rate changes, threshold updates, and incremental legislative amendments. 2026/27 is different in scale. The Employment Rights Act 2025 came into force with several immediate provisions from 6 April 2026: statutory sick pay payable from day one of absence, paternity leave as a day one right, and a new mandatory holiday records duty under Section 35 of the Act. These are not administrative adjustments; they require active changes to payroll configuration, HR policy, and record keeping systems before the affected pay runs. 

The Fair Work Agency, operational from 7 April 2026, has changed the enforcement landscape materially. Its proactive inspection powers mean that compliance inadequacies can be identified without a worker complaint. Employers who cannot demonstrate compliance through adequate records, not just through internally consistent calculations, are now at greater risk than at any point in the preceding decade of the equivalent enforcement model. 

The Pension Schemes Act 2026 received Royal Assent on 29 April 2026 and sets the agenda for pension reform over the coming years. Among its provisions is a framework for the automatic consolidation of small dormant defined contribution pots, those worth £1,000 or less that have received no contributions for at least twelve months, into authorised consolidator schemes overseen by The Pensions Regulator or the Financial Conduct Authority. Most of these provisions depend on secondary legislation: regulations are expected from 2027 onwards, with the duty to consolidate not anticipated to take effect until around 2030. The immediate action for HR and payroll teams is to monitor developments and review whether their current pension provider arrangements remain appropriate as the market consolidates, rather than to change anything before the first 2026/27 pay run. 

Collective redundancy exposure has also increased. From 6 April 2026, the maximum protective award a tribunal can make for failure to consult on collective redundancies has doubled from 90 days to 180 days of gross pay per affected employee, under Section 30 of the Employment Rights Act 2025 amending the Trade Union and Labour Relations (Consolidation) Act 1992. The Act also provides for the collective consultation threshold to be widened so that redundancies across more than one establishment can be aggregated, with the precise threshold to be set by secondary legislation. 

Looking ahead to January 2027, the unfair dismissal qualifying period reduces from two years to six months. The Government has confirmed this change and the 1 January 2027 commencement date, and has stated it will not consult further. From that date, any employee with at least six months of continuous service will be able to bring an ordinary unfair dismissal claim, and the statutory cap on the compensatory award is removed. Anyone who starts employment from 1 July 2026 will reach the six month threshold by the commencement date. HR teams should review their onboarding, probation, performance management, and capability procedures now. The lead time is shorter than it appears. 

Compliance is not a payroll only problem. Holiday pay calculations depend on HR systems holding accurate pay history. Redundancy calculations require HR records showing continuous service and correct start dates. Pension assessments require payroll earnings data. When systems are disconnected, errors in one area propagate to the other. A single source of truth for employee data is not a nice to have in a 2026/27 compliance environment; it is a prerequisite for audit readiness. 

Core Payroll & HMRC Compliance 

PAYE, RTI, and National Insurance 

PAYE is the mechanism through which employers withhold income tax and National Insurance Contributions from employees’ earnings and remit them to HMRC. The accuracy of PAYE depends on the quality of the payroll run: correct tax codes, correct NIC category letters, correct earnings figures, and correct application of current year rates and thresholds. Errors that persist across pay periods compound into year end liabilities that require correction through the payroll and potentially trigger HMRC compliance interest. 

Real Time Information (RTI) requires employers to submit a Full Payment Submission (FPS) on or before the date employees are paid. Where an FPS is submitted late, HMRC may issue an automatic late filing penalty. The Employer Payment Summary (EPS) is submitted where the employer has nothing to pay or wishes to claim statutory payment rebates. Both submissions must reconcile with the underlying payroll records; a discrepancy between what is submitted via RTI and what is held in the payroll system is a compliance risk that surfaces at year end reconciliation. 

National Insurance Contributions for 2026/27 carry a 15% employer rate on earnings above the Secondary Threshold of £5,000 per year, following the changes introduced from April 2025. NIC category letters must be correctly applied to each employee: errors in category assignment, particularly for employees approaching age 21, apprentices under 25, and qualifying veterans, produce systematic over or underpayment that may require correction through amended FPS submissions and employer payment summary adjustments. 

Spoke #15: National Insurance Contributions: Employer Obligations & Rate Changes for 2026/27 — for the full 2026/27 rate table, category letter guide, directors’ NIC rules, Employment Allowance, and Class 1A/1B obligations

Statutory forms and year end reporting 

Statutory payroll forms are mandatory, deadline driven compliance outputs that depend on the accuracy of payroll records throughout the year. A P45 must be issued without unreasonable delay when an employee leaves, with Part 1 submitted to HMRC via the FPS. P60s must be issued to all current employees by 31 May 2026. P11D and P11D(b) returns for benefits in kind must be submitted by 6 July 2026, with Class 1A NIC payable by 22 July. 

Payrolling of benefits in kind is available on a voluntary basis for 2025/26 and 2026/27, reducing or eliminating the individual P11D forms for payrolled benefits while the P11D(b) obligation for Class 1A NIC remains. From 6 April 2027, payrolling of benefits becomes mandatory. Payroll teams should be reviewing their benefits in kind arrangements and software capability now rather than waiting for the mandatory deadline. 

Year end reporting accuracy depends on the quality of payroll data maintained throughout the year. P11D errors arising from incorrect benefit valuations, P60 inaccuracies arising from incorrect year to date figures, and P45 issues arising from late or incorrect termination processing are all correctable, but each correction consumes time and creates risk if it results in an employee receiving incorrect tax information on a mortgage application or self assessment return. 

Spoke #16: Understanding P45, P60 & P11D: A Payroll Manager’s Reference Guide — for the full deadlines, form requirements, payrolling of benefits, GDPR compliant distribution, and the risks of manual paper based processes

Statutory pay and payroll accuracy 

Statutory Sick Pay has been payable from the first qualifying day of absence since 6 April 2026, following the abolition of the three day waiting period under the Employment Rights Act 2025. Payroll systems that still apply the old waiting day logic are generating incorrect SSP payments from the first sickness absence processed after 5 April 2026. This must be corrected before the next affected pay run. 

Statutory Maternity Pay, Statutory Paternity Pay, Statutory Adoption Pay, and Shared Parental Pay are calculated based on the employee’s average weekly earnings in the qualifying period. Errors in average earnings calculations, arising from incorrect or incomplete pay history in the payroll system, produce incorrect benefit amounts that may need to be corrected through amended RTI submissions and, where underpayments are identified, supplementary payments to the employee. 

Small employers who qualify for the 103% SMP recovery rate must ensure their payroll system is configured to apply the correct recovery percentage. The wrong recovery rate applied consistently across a year generates an incorrect employer payment summary and an accumulated discrepancy in the PAYE account that will require resolution. 

Workplace Pensions and Auto Enrolment 

Auto enrolment is a continuous compliance obligation, not a one time setup. Every pay period, employers must assess each worker against the three statutory categories, eligible jobholder, non eligible jobholder, and entitled worker, and take the appropriate action for each. A payroll system that assesses workers correctly at setup but does not update as earnings change, as workers approach age 22, or as new starters join will accumulate missed enrolments that require retroactive correction. 

Contributions must be calculated on qualifying earnings, applied using the correct basis, and deposited to the pension scheme promptly. Minimum employer contributions for 2026/27 remain at 3% of qualifying earnings, with 5% from the employee, totalling the 8% statutory minimum. These thresholds are subject to annual uprating; payroll teams should verify that the qualifying earnings band figures are confirmed for 2026/27 before the first April pay run. 

Re enrolment takes place every three years and requires the employer to identify all eligible jobholders who have previously opted out, re enrol them, issue the required communications, and submit a Declaration of Compliance to The Pensions Regulator within five months of the re enrolment date. Missing the Declaration of Compliance is a separate regulatory breach from missing the re enrolment itself; both attract TPR enforcement action. 

The Pension Schemes Act 2026 is shaping the future of the workplace pension market. Its small pots provisions will, once the supporting regulations are in force, see dormant defined contribution pots of £1,000 or less automatically consolidated into authorised consolidator schemes, and the Act introduces scale and value for money requirements for schemes used for auto enrolment. These are forward looking measures with implementation deferred to later in the decade; current auto enrolment duties are unchanged for 2026/27. Payroll and HR teams should monitor developments and consider whether their existing pension provider arrangements remain appropriate as the market evolves. 

The Pensions Regulator’s enforcement model operates through a tiered penalty system: fixed penalty notices of £400 for non compliance with statutory notices, escalating daily fines of up to £10,000 per day for persistent failure, and civil penalties for wilful or repeated breaches. The Fair Work Agency’s proactive inspection powers complement TPR enforcement; both bodies can investigate employer compliance without a worker complaint. 

Spoke #14: UK Employer’s Guide to Pension Auto Enrolment & Workplace Pensions — for the complete guide to worker assessment, contribution calculations, postponement, re enrolment, TPR penalties, and automating compliance with Staffology Payroll

HR Compliance and Employment Law Touch points 

Holiday entitlement and leave calculations 

The Working Time Regulations 1998 (as amended) entitle most workers to 5.6 weeks of paid annual leave per year. For workers on regular fixed patterns, the calculation is straightforward: days worked per week multiplied by 5.6. For irregular hours and part year workers, leave accrues at 12.07% of hours worked in each pay period under the rules effective from 1 April 2024. This calculation requires accurate hours data at the pay period level; payroll systems that do not capture actual hours worked for variable hours staff cannot apply the correct accrual. 

Holiday pay must reflect normal remuneration, not just basic pay. For workers who regularly receive overtime, commission, or allowances, those elements must be included in the holiday pay calculation using the 52 week reference period. Systematic underpayment, paying only basic rate on holiday leave for workers whose normal remuneration is higher, creates a continuing series of unlawful deductions that can be pursued at an Employment Tribunal covering up to two years of deductions. 

From 6 April 2026, Section 35 of the Employment Rights Act 2025 requires every employer to maintain adequate records of holiday entitlement, accrual, and payment for each employee for six years. Failure to comply is a criminal offence. The Fair Work Agency has proactive powers to inspect these records without a worker complaint. Employers whose leave records are held in spreadsheets or email threads, rather than in a system that produces a timestamped, exportable audit trail, are at risk of criminal liability under the new duty. 

Spoke #21: UK Holiday Entitlement & Leave Calculations: The Definitive Employer Guide — for the 12.07% accrual method, 52 week reference period, rolled up holiday pay, carry over rules, Regulation 16B records duty, and the Fair Work Agency’s enforcement powers

Redundancy and workforce change 

Statutory redundancy pay is calculated using an age banded formula multiplied by years of service, subject to a weekly pay cap that is uprated annually. The calculation must be performed year by year, applying the correct age band multiplier to each year of service counted backwards from the dismissal date. The most common calculation error is applying a flat multiplier rather than the year by year age band method, producing systematic underpayments for employees whose service spans multiple age bands. 

Collective redundancy consultation obligations apply where 20 or more dismissals are proposed within 90 days at one establishment. The minimum consultation period is 30 days for 20 to 99 redundancies and 45 days for 100 or more. The HR1 form must be submitted to the Insolvency Service at or before the start of collective consultation; failure to notify is a criminal offence. From 6 April 2026, failure to consult with appropriate employee representatives can result in a protective award of up to 180 days of gross pay per affected employee, doubled from the previous maximum of 90 days under the Employment Rights Act 2025. The Act also provides for the consultation trigger to extend across more than one establishment, with the threshold to be confirmed in secondary legislation, so employers running multi site reductions should treat aggregated headcount as a live risk. 

The unfair dismissal qualifying period reduces from two years to six months on 1 January 2027, a date the Government has confirmed. From that date, employees gain protection from ordinary unfair dismissal once they have six months of continuous service, and the statutory cap on the compensatory award is removed. Employers must be able to demonstrate a fair and documented dismissal process from much earlier in the employment relationship than before. Onboarding, probation, performance management, and capability procedures should be reviewed now, before the change takes effect. 

Spoke #17: Redundancy Pay & Entitlements: What UK Employers Need to Know — for the redundancy calculation formula, the age band worked example, consultation obligations, protective award risk, and the importance of accurate HR records in a tribunal defence

Records, audit trails, and data retention 

Compliance is evidenced by records, not by policy. An employer who has correctly calculated SSP but cannot produce the records showing how each payment was calculated does not satisfy the evidential standard that the Fair Work Agency, The Pensions Regulator, and Employment Tribunals now require. Record keeping is not an optional operational extra; it is the difference between a compliance assessment and a finding of non compliance. 

The following records must be retained for the periods specified: 

• PAYE and payroll records: generally six years from the end of the tax year to which they relate
• Pension and auto enrolment records: six years from the date of the record; opt out notices for four years 
• Holiday entitlement and pay records (from 6 April 2026): six years, under Regulation 16B of the Working Time Regulations as amended by the Employment Rights Act 2025; failure to comply is a criminal offence 
• SSP records: three years from the date of payment 
• Statutory family pay records (SMP, SPP, SAP, ShPP, SPBP): three years from the end of the tax year to which they relate 
• Employment contracts and HR records: generally six years following the end of employment 

Records that technically exist but are inaccessible, unstructured, or held across multiple disconnected systems cannot be produced efficiently in response to a Fair Work Agency inspection or an Employment Tribunal disclosure request. The practical standard is records that can be exported, organised by employee, and provided within a reasonable timeframe without requiring manual reconstruction. 

The Solution: Integrated Payroll and HR Technology 

Disconnected systems, spreadsheets, and manual re keying are the root cause of most avoidable payroll and HR compliance failures. When payroll data and HR data are held in separate systems without a shared data layer, errors in one become invisible to the other: a start date corrected in the HR system may not propagate to the payroll system; a pay rate change processed in payroll may not update the HR record; an absence recorded by a line manager may not reach the payroll team before the pay run closes. Each gap is a potential compliance failure. 

The consolidation of payroll and HR data into integrated, cloud based platforms removes these friction points. NIC category changes are applied automatically when an employee reaches a threshold age. Holiday accrual is calculated from actual payroll data, not from a separate manual tracker. Pension assessment uses live earnings from the pay run. Records are maintained in one system with a single audit trail, available for export without manual reconstruction. 

Staffology Payroll 

Staffology Payroll is a cloud based payroll engine supporting RTI submissions, PAYE and NIC calculations, statutory pay processing, and pension assessment through a single platform. Tax year updates, including NIC threshold changes, SSP rate updates, and statutory pay rate changes, are applied automatically, reducing the risk of running April payroll on prior year settings. 

RTI submissions are generated within the payroll workflow, with FPS and EPS produced and submitted directly to HMRC. Year end form generation, P60s, P11D data extraction, and P45 issuance, is built into the platform. For employers transitioning to payrolling of benefits in kind ahead of the mandatory April 2027 deadline, Staffology Payroll supports the real time payrolling calculation and the P11D(b) Class 1A NIC declaration that remains required even where individual P11D forms are no longer needed. 

Staffology HR and IRIS Cascade HRi 

Staffology HR is a cloud based HR platform for SMEs that provides connected employee records, leave management, and joiner mover leaver workflow support. IRIS Cascade HRi serves mid market organisations requiring stronger workforce data control, complex absence management, and richer reporting. Both feed into the payroll data layer that Staffology Payroll uses for RTI, NIC assessment, and holiday pay calculations, removing the version control and data gap risks that arise from separate systems. 

For holiday compliance specifically, both platforms maintain the leave records required under the Regulation 16B mandatory records duty: timestamped accrual calculations, leave taken, carry over events, and holiday pay computations. Records are retained for the required six years and are exportable for Fair Work Agency inspections or Employment Tribunal disclosure requests. 

IRIS Payroll Services 

For organisations that want to remove the operational risk of in house payroll processing, IRIS Payroll Services provides a fully managed payroll bureau service delivered by CIPP accredited payroll professionals. The service covers RTI submissions, PAYE and NIC processing, statutory pay calculations, year end form production, and ongoing compliance management. IRIS holds CIPP Gold accreditation. 

Managing complex payroll in house requires not just the right software but the right expertise, available consistently, updated for every legislative change. For businesses where payroll resilience is a concern, whether due to staffing, capacity, or the complexity of variable hours and statutory pay scenarios, managed payroll transfers the execution risk rather than simply reducing it. 

Ensure your business pays employees accurately and stays compliant across payroll, pensions, and HR. Explore IRIS HCM solutions for UK employers. 

2026/27 Payroll & HR Compliance Calendar 

The following calendar covers the key recurring dates and milestones payroll professionals and HR teams should track across the 2026/27 tax year. It is designed as a reference and planning tool, not an exhaustive list of every obligation. 

Note: Monthly FPS and EPS submission dates, pension contribution deadlines, and RTI obligations recur throughout the year. The dates above cover the annual and one off milestones most relevant to payroll planning. 

UK Payroll & Workforce Compliance: Frequently Asked Questions 

What are the penalties for late PAYE submissions? 

HMRC operates an automatic late filing penalty regime for RTI. Where the Full Payment Submission is submitted after the employee payday, an automated late filing notice may be issued. For most employers, the first late submission in a tax year attracts no penalty under HMRC’s current approach, but persistent late filing generates penalty notices based on the number of employees in the PAYE scheme. Penalties range from £100 per month for employers with one to nine employees, increasing to £400 per month for employers with 250 or more employees. Where PAYE and NIC payments are made late, interest and late payment penalties apply separately from the RTI filing penalty. Employers with a history of compliant filing may be eligible for penalty mitigation on application to HMRC. 

How often do employers need to re enrol staff into a workplace pension? 

Employers must carry out re enrolment every three years, within a three month window centred on the third anniversary of their staging date or previous re enrolment date. Re enrolment applies to eligible jobholders who opted out of the pension scheme more than twelve months before the re enrolment date. Workers who opted out within the twelve months immediately preceding the re enrolment date are not required to be re enrolled at this cycle. 

Following re enrolment, the employer must submit a Declaration of Compliance to The Pensions Regulator within five months of the re enrolment date. Failure to submit the declaration is a separate regulatory breach from failure to carry out re enrolment, and both can attract TPR enforcement action. Re enrolment is one of the most commonly missed auto enrolment obligations, particularly where employer records do not track individual opt out dates across the full workforce history. 

What records should employers keep for holiday pay and leave compliance? 

From 6 April 2026, employers must keep adequate records under Regulation 16B of the Working Time Regulations 1998 (as inserted by Section 35 of the Employment Rights Act 2025). Records must cover holiday entitlement under regulations 13(1) and 13A(1), accrual calculations under regulation 15B(2), payment records under regulation 16(1), leaver calculations under regulations 14(2) and 14(6), and carry over under regulation 15E(2). These records must be retained for six years from the date they are made. Failure to maintain adequate records is a criminal offence. The Fair Work Agency has proactive inspection powers to request and review these records without a worker complaint. 

How do irregular hours holiday pay calculations work? 

For irregular hours and part year workers, statutory leave accrues at 12.07% of hours worked in each pay period. This rate is derived from 5.6 weeks divided by 46.4 weeks (52 minus 5.6). The accrual applies to leave years starting on or after 1 April 2024. The 12.07% rate governs how much leave is accrued; it does not determine what the worker is paid when they take leave. Holiday pay must still reflect the worker’s normal remuneration, calculated using the 52 week reference period where pay is variable. Rolled up holiday pay, adding 12.07% to each pay period payment in lieu of separate holiday pay, is permitted only for irregular hours and part year workers under the current rules. 

What is changing for collective redundancy in 2026/27? 

From 6 April 2026, the maximum protective award an Employment Tribunal can make where an employer fails to consult on a collective redundancy has doubled from 90 days to 180 days of gross pay per affected employee, under the Employment Rights Act 2025. The collective consultation triggers themselves are unchanged for now: 20 or more proposed dismissals at one establishment within 90 days, with a minimum 30 day consultation period for 20 to 99 redundancies and 45 days for 100 or more, and an HR1 form filed with the Insolvency Service before consultation begins. 

The Act also provides for the consultation threshold to extend beyond a single establishment in future, so that redundancies proposed across multiple sites can be aggregated when assessing whether the duty is triggered. The precise threshold will be set by secondary legislation. Employers planning reductions across more than one location should treat combined headcount as a live consideration and take legal advice before commencing any exercise. 

When does the unfair dismissal qualifying period change, and to what? 

The qualifying period for ordinary unfair dismissal reduces from two years to six months on 1 January 2027. The Government has confirmed both the change and the commencement date and has said it will not consult further. From that date, an employee with at least six months of continuous service can bring an ordinary unfair dismissal claim, and the statutory cap on the compensatory award is removed. Because the change applies to anyone in employment on the commencement date, any employee who starts work from 1 July 2026 will have reached the six month threshold by 1 January 2027. Day one protections against discrimination and automatically unfair dismissal are unaffected. Employers should review probation, onboarding, performance management, and capability procedures well ahead of the deadline. 

Can payroll be outsourced if the business has complex shift patterns? 

Yes. Outsourced payroll bureaux, including IRIS Payroll Services, regularly manage payrolls involving complex shift patterns, variable hours, multiple rate structures, and irregular earnings. The key requirement is that the payroll data provided to the bureau is accurate and complete: shift patterns, hours worked, pay rates, absence records, and any applicable allowances must be submitted in the agreed format before each payroll run. 

The employer retains legal responsibility for payroll compliance regardless of whether processing is outsourced. An outsourced provider calculates and submits based on the information provided; they do not take on liability for errors arising from incorrect or incomplete input data. IRIS Payroll Services is delivered by CIPP accredited professionals and covers RTI, statutory pay, year end forms, and ongoing compliance administration. 

Does Staffology support RTI submissions to HMRC? 

Yes. Staffology Payroll generates and submits Full Payment Submissions and Employer Payment Summaries directly to HMRC as part of the standard payroll processing workflow. FPS submissions are made on or before the employee payday, in line with the RTI requirement. The platform handles the connection to the HMRC Government Gateway and retains a record of each submission, including the submission date and any HMRC acknowledgement received. For employers managing their own payroll, this removes the manual filing step and produces an audit trail of RTI compliance without requiring separate logging.