Linkedin-in

How HMRC’s Joint and Several Liability Q&A changes what end-hirers and recruitment agencies should do before April 2026

HMRC's exclusive Q&A with ContractorUK is the most useful new source on what Joint and Several Liability under ITEPA Chapter 11 will actually require from 6 April 2026. The point that should reach the boardroom is short: liability arises for relevant parties regardless of whether due diligence has been undertaken. The OPRaaS Virtual Compliance Director answers that with a continuously refreshed labour supply chain assurance file.
A UK construction site office showing a project director and compliance manager reviewing Joint and Several Liability evidence on a laptop, with a RAG compliance scorecard on the wall and a labour subcontractor list on the desk.

News · End-hirers · Recruitment Agencies · OPRaaS Platform

Joint and Several Liability under ITEPA Chapter 11 takes effect on 6 April 2026, and the most useful new source on what HMRC will actually accept is HMRC itself. In an exclusive Q&A with ContractorUK, HMRC set out which engagements the new regime applies to, what the anti-avoidance design catches, when the liability is discharged, and how HMRC intends to flag risk to end-hirers and recruitment agencies before a formal determination of underpayment lands.

The point that should reach the boardroom is short. HMRC has confirmed that liability arises for relevant parties regardless of whether due diligence has been undertaken. Due diligence does not by itself stop the liability. What does is a continuously refreshed labour supply chain assurance file that surfaces issues before the underpayment, and an exit pattern that moves a labour provider off the PSL while the chain is still solvent. That is the OPRaaS Virtual Compliance Director (OPRaaS VCD) operating model.

What HMRC’s Joint and Several Liability Q&A clarifies about who is, and who is not, in scope

HMRC was specific in the Q&A about scope. The new April 2026 rules apply where a worker is employed by an umbrella company. They do not apply where the worker is treated as an employee under other tax legislation, such as the agency rules, the off-payroll working rules (IR35), the managed service company rules, or the salaried members rules.

HMRC also went further on anti-avoidance. Where a business presents as an umbrella company but does not actually employ workers in the way a genuine umbrella would, the legislation will treat the worker as employed by that company in any case, and Joint and Several Liability applies as if the structure had been clean. The design is explicit: a re-engineered contract or a re-described relationship will not put a business outside ITEPA Chapter 11. The substance of the engagement, not the label on the contract, is what determines scope.

What the Q&A says about due diligence as a defence

The single most important sentence in the Q&A, for any end-hirer or recruitment agency, is that liability arises for relevant parties irrespective of whether due diligence has been undertaken. Due diligence, in other words, is not a statutory shield. A weighty onboarding pack is good practice, but it is not a defence under ITEPA Chapter 11 once an underpayment has occurred.

This is why OPRaaS does not lead with a one-off onboarding artefact. The OPRaaS LSCA 2.0 methodology produces a continuously refreshed evidence file across Map, Train, Audit and Evidence. The file is alive, not static. The point in which it makes the difference is the point at which HMRC asks to see what controls were in place across the life of the arrangement, not just at the start.

How the liability is discharged, and what happens if it is not

HMRC confirmed the routine path. If the umbrella settles the unpaid PAYE and NICs, the Joint and Several Liability is discharged. Where the umbrella does not settle, HMRC will pursue the relevant parties in the chain. That is the agency, the end-hirer, or both. The recovery does not need to follow the order of the parties in the contract.

In practice, this gives the end-hirer and the agency two outcomes whenever an umbrella fails. The first is that the umbrella resolves the underpayment quickly. The second is that the umbrella does not, and recovery lands on the firm with the deepest pocket. The latter is the more common outcome when an umbrella has already failed financially. Indemnity clauses are a private contract right against an empty estate.

The early-warning mechanism end-hirers should expect from HMRC

The Q&A added one detail that has been less reported. HMRC may, before issuing a formal determination of underpayment, disclose relevant information to a business that may be jointly and severally liable. That can include identifying the umbrella concerned. The disclosure is designed to give the relevant party the chance to act before the position crystallises.

The implication is operational, not legal. The business that receives such a disclosure must be in a position to act on it inside days, not weeks. That means a mapped supply chain, a current view of payslip and remittance sampling, and a defined exit playbook. Without that, the disclosure is news rather than warning.

Five Joint and Several Liability actions OPRaaS LSCA 2.0 delivers for an end-hirer or agency this quarter:

  1. A mapped labour supply chain. Every agency, sub-agency, PEO, umbrella and worker group recorded with the controls expected at each tier.
  2. A UK law test on the umbrella PSL. Control, personal service, mutuality, financial risk and integration, supported by payslip and remittance sampling.
  3. A live evidence file. Continuously refreshed inside the OPRaaS VCD platform, ready for an HMRC question on any working day.
  4. Exit triggers before insolvency. Documented thresholds that move a labour provider off the PSL while there is still time to do so cleanly.
  5. A retained governance function. The OPRaaS Virtual Compliance Director as a named, retained capability for end-hirers, recruitment agencies, umbrella companies, managed service providers (MSPs) and public sector buyers.

What this means for the next twelve months

The HMRC Q&A reads as a clear signal that the regulator’s working model is to flag risk early and recover where the chain has not addressed it. For the end-hirer that has only paid contractual attention to its umbrellas, the gap between disclosure and determination will close fast. For the end-hirer that has built a Joint and Several Liability evidence file inside the OPRaaS VCD platform, the same disclosure becomes a routine workflow item rather than a board-level incident.

Compliance is your asset. Evidenced, every day. The asset is the evidence file an end-hirer holds before HMRC asks for it, not the indemnity it holds after.

OPRaaS, On-Pay-Roll-as-a-Service, is a systemised governance and workforce management partner for organisations that rely on temporary, contractor and contingent labour. Through OPRaaS’s Virtual Compliance Director solutions we embed senior governance leadership into your business without the cost of a full-time director, building audit-ready controls across JSL, IR35, CIS, GLAA, modern slavery and HMRC labour supply chain expectations. OPRaaS Limited is approved on the UK Government Commercial Agency (formerly Crown Commercial Service) frameworks including RM6310 Audit & Assurance Services (Lots 2 & 4), RM6219 Learning & Training Services DPS and RM6237 Learning & Training Services DPS. Your next step, ahead of 6 April 2026, is a thirty-minute scoping call to look at the umbrella PSL, the JSL evidence file you would want HMRC to see, and the supply-chain assurance pattern the OPRaaS VCD platform puts around both. Own your compliance as an asset.

Own your compliance as an asset. Evidenced, every day.

Read next

“Own your compliance as an asset.”

Drawing on HMRC’s exclusive Q&A with ContractorUK, “Exclusive Q&A with HMRC on new Joint & Several Liability umbrella company rules”, and on the Joint and Several Liability regime under ITEPA Chapter 11 coming into force on 6 April 2026.

Talk to OPRaaS about your supply chain.

Use the contact form in the sidebar, or email info@opraas.co.uk.

This article is provided for informational purposes only and is not intended as legal, tax, employment, accounting or regulatory advice. Compliance obligations vary by organisation, sector and supply chain. Readers should seek their own professional advice before acting on any of the points raised. Images are illustrative only. Third-party trademarks and brand names remain the property of their respective owners. Errors can occur; if you spot one, please report it to info@opraas.co.uk.

Share this article

Facebook
X
LinkedIn

More articles

LSCA Glossary of Terms

Glossary of Terms

Comprehensive definitions for Labour Supply Chain Assurance compliance terminology

No matching terms found. Try a different search.
Acronym Full Term Definition
CFA 2017 Criminal Finances Act 2017 UK legislation introducing Corporate Criminal Offence (sections 45/46): failure to prevent the facilitation of tax evasion. Requires businesses to implement 'reasonable prevention procedures' (RPP). The only defence is having adequate RPP or showing it was not reasonable to expect such procedures.
MSA 2015 Modern Slavery Act 2015 UK legislation mandating supply chain transparency and worker safeguarding. Section 54 requires commercial organisations with ≥£36m turnover to publish annual modern slavery statements (board-approved, signed by director, published on website with prominent homepage link).
IR35 Off-Payroll Working Rules Tax legislation determining whether a contractor should be treated as employed or self-employed for tax purposes. Since April 2021, medium and large private sector clients must determine contractor status and deduct employment taxes if inside IR35. Requires Status Determination Statement (SDS).
JSL Joint & Several Liability 2026 legislation imposing strict liability on agencies and end-hirers for umbrella company tax debts, even where due diligence checks have been undertaken. Makes supply chain participants jointly responsible for unpaid PAYE taxes.
AWR Agency Workers Regulations 2010 UK regulations giving agency workers the right to the same basic working and employment conditions as permanent employees after 12 weeks in a qualifying assignment (12-week parity rule).
Good Work Plan Good Work Plan 2020 UK employment law reforms requiring written 'section 1 statement' of employment particulars to be given to employees and workers on or before day 1 of engagement (effective 6 April 2020). Sets out key terms but is not itself the contract.
Construction Act Housing Grants, Construction and Regeneration Act 1996 UK legislation governing payment practices in construction contracts. Section 113 renders "pay when paid" clauses ineffective (except where upstream payer is insolvent). Requires clear due dates, final dates for payment, and compliant payment/pay less notices.
Pensions Act 2008 Pensions Act 2008 UK legislation establishing workplace pension auto-enrolment requirements. Employers must automatically enrol eligible workers into qualifying pension schemes and make minimum contributions.
Acronym Full Term Definition
HMRC HM Revenue & Customs UK government department responsible for tax collection, payment of tax credits and benefits, and enforcement of tax law. Operates PAYE, CIS, RTI systems and conducts compliance audits. Business Tax Account provides reconciliation data.
GLAA Gangmasters and Labour Abuse Authority UK government body regulating labour providers in certain sectors (agriculture, horticulture, shellfish gathering, food processing/packaging) and investigating worker exploitation. Operates licensing regime and has criminal investigation powers. Hotline: 0800 432 0804 (03000 718234 out of hours).
ICO Information Commissioner's Office UK independent authority upholding information rights. Enforces UK GDPR and Data Protection Act 2018. Personal data breaches must be reported to ICO within 72 hours where there's risk to individuals' rights. Provides guidance on lawful bases, DSARs, and data-sharing.
CITB Construction Industry Training Board Industry body that collects levy from construction employers (payroll ≥£80k in PAYE in last tax year, or ≥£80k net CIS payments) and provides training grants. CITB levy compliance is audited in construction-focused compliance audits.
Acronym Full Term Definition
PAYE Pay As You Earn HMRC's system for collecting Income Tax and National Insurance Contributions from employees' wages. Employers deduct tax before paying employees, then remit to HMRC. Operates under Real Time Information (RTI) reporting requirements.
CIS Construction Industry Scheme Tax deduction scheme for payments to subcontractors in construction industry. Contractors must verify subcontractors with HMRC before first payment and make deductions (20% for verified, 30% for unverified) on labour element only (excluding VAT and allowable materials). CIS300 returns due by 19th following tax month.
GPS Gross Payment Status CIS status allowing subcontractors to be paid without deductions. Must apply to HMRC and meet compliance tests (business test, turnover test, compliance test). Contractors must verify GPS and keep evidence; continue to file CIS300 but make no deduction.
CIS300 CIS Monthly Return HMRC return submitted by contractors detailing total payments made to each subcontractor and CIS tax deductions applied. Must be filed by the 19th following the tax month (6th–5th). Should reconcile to subcontractor statements and bank payments.
CIS340 CIS340 Guidance HMRC's official guidance document defining what constitutes 'construction operations' for CIS purposes. Only work qualifying under CIS340 can legitimately be paid through the Construction Industry Scheme. Includes site preparation, construction, alteration, repairs, demolition.
RTI Real Time Information HMRC system requiring employers to report PAYE information at or before each pay run. Consists of Full Payment Submission (FPS) for regular pay data and Employer Payment Summary (EPS) for adjustments/recoveries. Must reconcile to payslips and Business Tax Account.
FPS Full Payment Submission RTI submission reporting gross taxable pay, Income Tax, and NICs for each employee on each payday. FPS values must match payslips. Should not be used to mask under-deductions.
EPS Employer Payment Summary RTI submission used only for adjustments, such as recoveries, statutory payments, employment allowance claims, or apprenticeship levy. Should not be used to mask PAYE under-deductions.
Bacs Bankers' Automated Clearing Services UK electronic payment system used for direct debits and credits, including salary payments. Net pay on payslip must match Bacs transfer to worker's bank account. Never use "BACS" (incorrect).
UTR Unique Taxpayer Reference 10-digit number issued by HMRC to identify individuals and businesses for tax purposes. Required for CIS verification and self-assessment tax returns. Note: UTR alone isn't proof of CIS verification; contractor must verify with HMRC before first payment.
NIC / NICs National Insurance Contributions UK social security tax paid by employees (via PAYE), employers (as on-costs), and the self-employed (Class 2/4 via self-assessment). Funds state benefits including state pension, statutory sick pay, and maternity allowance. CIS deductions are payments on account of Income Tax and Class 4 NICs.
NMW National Minimum Wage Legal minimum hourly rate employers must pay workers in the UK. Rates vary by age band. Post-deduction pay (after deductions for employer's own use/benefit) must not fall below NMW. Records must be kept for 6 years.
NLW National Living Wage Higher rate of National Minimum Wage for workers aged 21 and over. Often referred to together as "NMW/NLW". Different from voluntary Real Living Wage calculated by Living Wage Foundation.
AE Auto-Enrolment (Pensions) Workplace pension scheme where employers must automatically enrol eligible workers (aged 22+ to state pension age, earning ≥£10k annually) into a qualifying pension. Minimum contributions, opt-out rights, and re-enrolment (every 3 years) required.
P45 P45 (Leaving Employment) HMRC form given to employees when they leave employment, showing pay and tax details for the year to date. New employer uses P45 to operate correct tax code. Emergency codes (e.g., 1257L W1/M1) apply without P45/P6.
Acronym Full Term Definition
DRC Domestic Reverse Charge (VAT) VAT mechanism for construction services where the customer accounts for VAT instead of the supplier. Applies to most construction services under CIS340. Designed to combat missing trader fraud in construction supply chains.
Kittel Kittel Principle EU/UK legal principle that a taxpayer who knew or should have known their transaction was connected to VAT fraud may be denied the right to deduct input VAT. Creates due diligence obligations for supply chain participants.
DR Disguised Remuneration Tax avoidance arrangements designed to pay individuals while avoiding income tax and NICs, often involving loans, offshore entities, or trusts. HMRC actively targets such schemes. Loan charge applies to outstanding loans.
Acronym Full Term Definition
SDC Supervision, Direction or Control Key factor in determining employment status under agency rules (ITEPA 2003 s44). If a worker is under supervision, direction or control by any person (client, agency, end-hirer) over how they work, PAYE must be operated. SDC alone is not the general CIS status test—apply usual status tests (control, substitution, mutuality).
MOO Mutuality of Obligation Employment status indicator examining whether the employer is obliged to provide work and the worker is obliged to accept it. Absence of MOO suggests self-employment; presence suggests employment.
SDS Status Determination Statement Document required under IR35 reforms (April 2021) where medium/large clients must provide written reasons for their determination of a contractor's employment status for tax purposes. Must be given before contract starts or worker begins work.
CEST Check Employment Status for Tax HMRC's online tool for determining whether a worker should be classified as employed or self-employed for tax purposes. Results are binding on HMRC if information provided is accurate and not relating to highly complex arrangements.
PSC Personal Service Company Limited company through which a contractor provides their services. Often used by contractors working outside IR35, but subject to IR35 rules if the underlying relationship is one of employment. Requires SDS from medium/large clients.
KID Key Information Document Plain-English factsheet (not a contract) that agencies must give to workers before they agree to an assignment (Conduct of Employment Agencies and Employment Businesses Regulations 2003). Includes worked pay illustration, deductions, who pays the worker, benefits. Must be updated within 5 working days of any change.
ITEPA 2003 Income Tax (Earnings and Pensions) Act 2003 UK tax legislation governing employment income. Section 44 contains agency rules requiring PAYE where worker is under SDC. Section 61N–61R cover off-payroll working (IR35) for public sector and (from 2021) medium/large private sector.
DBS Disclosure and Barring Service UK government service providing criminal record checks for employment purposes (particularly roles working with children or vulnerable adults). Processing DBS data requires DPA 2018 Schedule 1 condition and appropriate policy document.
Acronym Full Term Definition
Umbrella Umbrella Company Employment intermediary that employs agency workers and contractors. Handles PAYE, pension, and employment administration while the worker performs assignments for end-clients arranged through agencies. Employer NICs/apprenticeship levy must be funded from assignment rate, not charged to workers as deductions.
MUC Mini Umbrella Company Fraudulent scheme where multiple small umbrella companies are created to exploit employment allowances and avoid tax obligations. Often phoenixing after accumulating tax debt. A significant compliance risk that supply chain audits help detect.
Phoenix Phoenix Company Scheme Fraudulent practice where a company accumulates tax debts, is dissolved, and re-emerges as a new entity to escape liabilities. A key risk factor in supply chain due diligence. Tolerance of phoenix suppliers by end users enables fraud cycle.
Purported Purported Umbrella Company Entity presenting itself as a legitimate umbrella company but failing to meet compliance standards, potentially operating tax avoidance schemes or misclassifying workers.
Hybrid Hybrid Payment Model Pay arrangement combining different payment methods (e.g., PAYE + CIS, or PAYE + PSC). Requires careful status assessment to avoid disguised remuneration or employment status breaches.
Acronym Full Term Definition
UK GDPR UK General Data Protection Regulation UK data protection law (retained EU law post-Brexit) governing processing of personal data. Requires lawful basis (Art 6), data minimisation, security, transparency (Arts 13-14), and respect for data subject rights. Works alongside Data Protection Act 2018.
DPA 2018 Data Protection Act 2018 UK legislation supplementing UK GDPR. Schedule 1 sets conditions for processing special category data (health, biometric, union membership) and criminal offence data (e.g., DBS checks). Provides exemptions (crime prevention, tax collection, legal professional privilege).
DSAR Data Subject Access Request Individual's right under Art 15 UK GDPR to obtain copy of their personal data. Must respond within one month (extendable by 2 months for complex requests). Usually no fee. Must verify identity proportionately.
DPO Data Protection Officer Required role for public authorities or organisations conducting large-scale systematic monitoring or processing special category data (Art 37). Oversees data protection compliance, advises on DPIAs, and acts as contact point for ICO and data subjects.
LIA Legitimate Interests Assessment Assessment required when relying on legitimate interests (Art 6(1)(f)) as lawful basis. Three-part test: identify legitimate interest → demonstrate necessity → balancing test (interests vs individual rights). Appropriate for audit/assurance; avoid consent for audits.
DPIA Data Protection Impact Assessment Required assessment where processing is likely to result in high risk to individuals (Art 35). Must complete for large-scale, systematic monitoring or extensive special category data processing. Documents risks, mitigation measures, and necessity/proportionality.
RoPA Records of Processing Activities GDPR requirement (Art 30) documenting all personal data processing activities. Must include purposes, lawful bases, data categories, recipients, retention periods, security measures, and international transfers. Must be available to ICO on request.
IDTA International Data Transfer Agreement UK mechanism for lawfully transferring personal data outside the UK (replacing EU Standard Contractual Clauses post-Brexit). Required unless recipient country has adequacy decision or other derogation applies. Alternative: UK Addendum to EU SCCs.
SCCs Standard Contractual Clauses EU Commission-approved contract templates for international data transfers. For UK data exports, use UK Addendum to EU SCCs or UK IDTA.
Art 28 DPA Article 28 Data Processing Agreement Mandatory contract between controller and processor (Art 28 UK GDPR). Must cover: subject matter, duration, data types, processing instructions, confidentiality, security, sub-processors, data subject rights assistance, breach notification, data deletion/return, audit rights.
Art 26 Article 26 (Joint Controllers) UK GDPR provision for parties who jointly determine purposes and means of processing. Requires arrangement setting out respective responsibilities, data subject rights, and contact points. Different from controller-processor (Art 28) or controller-controller data-sharing.
Controller Data Controller Organisation that determines the purposes and means of processing personal data. Bears primary GDPR obligations. Agencies, umbrellas, and end-hirers usually act as independent controllers for their own audit/compliance purposes.
Acronym Full Term Definition
LSCA Labour Supply Chain Assurance Due diligence framework ensuring compliance with tax, employment, and ethical standards throughout the labour supply chain. Covers PAYE/CIS compliance, modern slavery, CFA 2017, worker rights, and IR35. Aims to detect exploitation, fraud, and phoenixism.
PSL Preferred Supplier List Vetted list of approved suppliers (typically umbrella companies or agencies) that meet compliance standards. Key governance control for managing supply chain risk. Should be reviewed regularly and require re-certification.
End-Hirer End-Hirer / End Client The organisation where agency or contract workers ultimately perform their work. Under current regulations, medium/large end-hirers have IR35 status determination responsibilities and supply chain due diligence obligations.
CCO Corporate Criminal Offence CFA 2017 offence: failure to prevent facilitation of tax evasion by an associated person. Three-stage liability: (1) taxpayer evades tax, (2) associated person criminally facilitates it, (3) organisation failed to prevent. Only defence: reasonable prevention procedures (RPP).
RPP Reasonable Prevention Procedures The only defence to Corporate Criminal Offence under CFA 2017. HMRC's six principles: risk assessment, proportionate procedures, top-level commitment, due diligence, communication (training), monitoring & review. Must be risk-based and documented.
SRO Senior Responsible Owner Senior person accountable for CFA 2017 compliance, risk assessments, and implementation of reasonable prevention procedures. Provides top-level commitment and board oversight.
MSAT Modern Slavery Assessment Tool UK Government tool (Home Office/Cabinet Office) for assessing modern slavery risks in supply chains. Free to organisations registered on UK Government Supplier Registration Service.
Acronym Full Term Definition
ASCA Agency Self-Certification Audit Most comprehensive audit form with 174 questions across 18 sections. Enables recruitment agencies to self-assess compliance with tax, employment, and supply chain obligations including PAYE, CIS, Modern Slavery, CFA 2017.
AUCIS Agency Umbrella CIS Audit Audit evaluating recruitment agencies' compliance with CIS requirements when engaging umbrella companies, ensuring proper tax treatment and supply chain integrity.
AUPAYE Agency Umbrella PAYE Audit Audit assessing recruitment agencies' oversight of umbrella companies' PAYE compliance, including tax deductions, National Insurance contributions, and payroll accuracy.
EHUCIS End-Hirer Umbrella CIS Audit Audit evaluating end-hirers' due diligence when engaging umbrella companies under CIS, ensuring supply chain compliance and proper contractor treatment.
EHUPAYE End-Hirer Umbrella PAYE Audit Audit assessing end-hirers' oversight of umbrella PAYE arrangements, covering payroll transparency and worker rights compliance.
EHSA End-Hirer Self-Assessment Audit Audit enabling end-hirers to self-assess their compliance with supply chain, tax, and employment obligations.
EHAA End-Hirer Assurance Audit Audit providing end-hirers with an independent assessment of their supply chain compliance, risk management, and due diligence practices.
UMBCIS Umbrella CIS Audit Audit evaluating umbrella companies' compliance with CIS requirements, including proper contractor treatment, tax deductions, and verification processes.
UMBPAYE Umbrella PAYE Audit Audit assessing umbrella companies' PAYE compliance, payroll integrity, and worker protection standards. Contains 21 sections (Section 1 info-only, Sections 2-20 audit, Section 21 declaration) vs 18 for most other audits.
Self-Cert Self-Certification Audit Generic term for labour supply chain compliance audits where organisations self-assess against tax, employment, and ethical standards. Provides documented evidence of due diligence for HMRC inspections.
Acronym Full Term Definition
Instance Audit Form Instance Individual audit submission. Users can create unlimited instances, each stored as WordPress custom post type with responses in wp_opraas_audit_responses table. Assigned to logged-in user via post_author field.
Completion Completion Score Frontend metric showing percentage of questions answered (any answer counts). Includes ALL sections: Section 1 checkbox, Section 2 (8 fields), Declaration (7 fields), and all audit questions. N/A responses count as answered.
Compliance Compliance Score Backend metric measuring quality of compliance. Scoring: Yes=5 points, No=0 points, N/A=0 points (excluded from maximum), Don't Know=1 point. EXCLUDES Sections 1, 2, and Declaration entirely. ≥80% = Compliant, 60-79% = Partially Compliant, <60% = Non-Compliant.
Evidence Evidence Files Supporting documents uploaded to substantiate audit responses. Stored in AWS S3 via WP Offload Media plugin, with Evidence Table providing S3-aware ZIP downloads that temporarily download from cloud before adding to archives.
Red Flags Red Flags Warning indicators in audit questions identifying practices that may indicate non-compliance, fraud risk (phoenixism, MUCs, disguised remuneration), or regulatory breaches requiring immediate attention and remediation.