HMRC’s £471.5bn receipts line continues to raise the bar for PAYE and NIC compliance in 2026

PAYE and NIC compliance is no longer a supplier-side payroll assumption. HMRC's latest bulletin puts combined PAYE Income Tax and NIC receipts at £471.5 billion for April 2025 to March 2026, just over half of every pound HMRC collects. With April 2026 Joint and Several Liability moving unpaid umbrella PAYE risk upstream to agencies and end-hirers, board directors are now answering a continuous evidence question, not a one-off supplier-confidence question.
PAYE and NIC compliance review in an Edinburgh end-hirer finance back-office, three colleagues mid-discussion

PAYE and NIC Compliance is no longer a supplier-side payroll assumption. It now sits inside one of HMRC’s most important revenue protection priorities. HMRC’s latest tax and National Insurance contribution receipts show PAYE Income Tax and NIC receipts of £471.5 billion for April 2025 to March 2026, an increase of £48.5 billion on the comparable period a year earlier, according to HMRC’s monthly tax and NIC receipts bulletin.

That figure is not only a measure of tax collected. It is a marker of the scale of the employment tax system HMRC is protecting. PAYE and NICs sit behind employment, payroll, umbrella companies, agency labour and contingent workforce models. They are part of the money that funds public services, and HMRC’s stated purpose is to collect that money while helping compliant taxpayers get things right and making it harder for non-compliance to go unchecked.

This is where the issue moves from public finance into labour supply chain governance. The same PAYE and NIC money trail that HMRC is protecting now runs through increasingly complex contingent workforce arrangements. At the same time, April 2026 Joint and Several Liability means unpaid umbrella PAYE risk can move upstream to the organisations that use, place and benefit from that labour. OPRaaS becomes relevant because it gives end-hirers and recruitment agencies a way to evidence that PAYE and NIC Compliance is being monitored, challenged and controlled, rather than left to supplier confidence.

Why HMRC’s PAYE and NIC line now matters commercially

HMRC’s receipts bulletin records PAYE Income Tax and NIC receipts of £471.5 billion for April 2025 to March 2026, £48.5 billion higher than the same period a year earlier. Gross HMRC tax and NIC receipts reached £938.8 billion for the same tax year, up £80.2 billion year on year. HMRC attributes part of the movement to changes to Employer Class 1 NICs from April 2025 and earlier changes to Employee NICs from April 2024.

The wider compliance picture makes the point more sharply. In its 2024 to 2025 annual report, HMRC reported £48.0 billion of compliance yield, described as revenue collected and protected that would otherwise have been lost to the Exchequer without HMRC intervention. HMRC also reported that its compliance work returned £23 for every £1 spent on its compliance workforce.

The message is clear: HMRC does not view compliance as paperwork. It views compliance as revenue protection. PAYE and NICs are part of the tax base it is mandated to collect, and failures in that system matter because they reduce public revenue, distort competition and create unfair advantage for non-compliant operators.

For businesses using contingent labour, that matters because the revenue HMRC is protecting is often generated through arrangements that sit outside the organisation’s own payroll team. A worker may be supplied by an agency, paid through an umbrella company, managed through an MSP, and working day to day inside an end-client organisation. The commercial benefit is visible. The tax evidence is often less so.

Why umbrella company compliance is now part of the same story

The umbrella company market sits at the centre of this change. It supports large parts of the temporary and contractor labour market, but it also creates a practical separation between the organisation using the labour and the payroll operator responsible for deducting and remitting PAYE and NICs.

That separation is exactly what government and HMRC have been trying to address. The government’s response to tackling non-compliance in the umbrella company market explains that tax non-compliance can leave workers facing substantial tax bills, allow non-compliant umbrella companies to undercut compliant competitors, threaten responsible businesses and damage the functioning of the market.

That policy language is important because it shows that umbrella compliance is not being treated as a narrow payroll issue. It is being treated as a market integrity issue, a worker protection issue and a tax collection issue. PAYE and NIC Compliance therefore becomes the point where employment tax, supplier assurance and workforce governance meet.

The practical implication is simple. If an organisation relies on umbrella labour, it cannot safely treat the umbrella company as a black box. It needs to know whether PAYE and NICs are being operated correctly, whether warning signs are being reviewed, and whether evidence exists if HMRC, a client, regulator or audit committee asks for it later.

How Joint and Several Liability changes the standard of evidence

The Joint and Several Liability regime under Chapter 11 of Part 2 of the Income Tax (Earnings and Pensions) Act 2003 is the point at which the evidence requirement changes. GOV.UK’s policy note on PAYE changes for the umbrella company market explains that legislation will make employment agencies or end clients jointly and severally liable for amounts required to be accounted for under the PAYE provisions where an umbrella company forms part of a labour supply chain.

That does not only change who might be liable. It changes what good compliance looks like.

A preferred supplier list, a right-to-work check, an accreditation certificate or an onboarding questionnaire may all be useful. They show that some checks happened at a particular moment. What they do not necessarily show is whether the supply chain remained controlled while workers were being engaged, paid and supplied.

That is the gap Joint and Several Liability exposes. The question is no longer simply, “Did we approve this supplier?” It becomes, “Can we evidence what we checked, when we checked it, what changed, what we escalated and how we responded?”

This is the difference between onboarding and assurance. Onboarding records entry into the supply chain. Assurance records the condition of the supply chain while risk is being created.

Where PAYE and NIC Compliance evidence usually breaks down

In most contingent workforce models, the problem is not that nothing is being done. The problem is that the evidence is scattered.

Umbrella checks may sit in procurement folders. Worker identity documents may sit in supplier portals. Payslip samples may be requested only when there is a concern. RTI, bank, payslip, worker and contract data may be held by different parties. Audit notes may sit in email trails. Board reporting may focus on labour spend, headcount, margin or supplier performance, while PAYE and NIC risk remains in the background.

That model may be enough to keep the workforce moving. It is much weaker when a business is asked to show one dated evidence file explaining how its labour supply chain was controlled.

The weakness, therefore, is not always an absence of activity. It is an absence of continuity. If the organisation cannot show what was checked, who checked it, what was found, what changed and how exceptions were resolved, then its PAYE and NIC Compliance position is harder to defend.

That is why the evidence needs to move upstream with the liability. If the financial risk can reach the agency or end-hirer, the compliance record must be visible to them too.

What audit-ready PAYE and NIC Compliance looks like

Audit-ready PAYE and NIC Compliance is not a static folder of historic documents. It is a live evidence position that can be read, tested and produced when required.

Inside the OPRaaS LSCA Self-Certification Course, Module 11 maps Joint and Several Liability to LSCA controls. The thirteen JSL Readiness questions sit across four control families: Governance, Process and contracts, Data and analytics, and Worker-facing controls.

Those control families are designed to move PAYE and NIC Compliance away from periodic supplier reassurance and into a continuously evidenced assurance model. The output is the OPRaaS Defence File: a dated, time-stamped and evidence-led record that an end-hirer or recruitment agency can produce when HMRC, a public-sector client, regulator, procurement lead or audit committee asks how the labour supply chain was controlled.

The Data and analytics control family is where the HMRC receipts line becomes operational. RTI submissions, payslip samples, worker identity data, National Insurance numbers, bank details and umbrella pay-run evidence can be sampled, tested and escalated against known risk indicators. Exceptions can be identified and recorded, rather than left buried inside the chain.

The governance value is not only that issues are found. It is that the organisation can show the method: what it looked for, when it looked, what it found, who was notified and what action followed.

PAYE and NIC Compliance is no longer proved by saying an umbrella was on a preferred supplier list. It is proved by producing a continuous record of control.

How the OPRaaS Virtual Compliance Director supports PAYE and NIC Compliance

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 capability 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.

The role of the OPRaaS VCD model is to turn dispersed compliance activity into a structured assurance position. Instead of relying on separate portals, inboxes, supplier files and periodic spreadsheets, the organisation can build one evidence record around the labour supply chain controls that matter.

Preferred supplier list umbrellas can be re-audited against the OPRaaS LSCA 2.0 methodology at defined intervals, with each re-audit producing a dated record inside the OPRaaS Defence File. Exceptions, supplier actions, worker-facing controls, pay-run evidence and governance responses can be captured as part of the same assurance record.

The platform also supports board-level reporting. A one-page JSL board report can summarise Executive snapshot, Exposure, Control maturity, Key incidents, Action plan and Forward look, giving directors a practical view of whether PAYE and NIC Compliance is being actively assured or merely assumed.

That distinction matters. When HMRC publishes its next receipts bulletin, the organisation should already know whether its labour supply chain evidence has strengthened, weakened or remained static.

What organisations should ask about PAYE and NIC Compliance now

The next HMRC receipts release is not just another data point. It is a reminder that PAYE and NIC Compliance sits at the meeting point between tax collection, labour supply chain governance and commercial risk.

Three questions are worth asking now:

  1. The Defence File question. Which lines of our PAYE and NIC Compliance evidence could we produce on the day HMRC, a public-sector client, regulator or audit committee asks for them?
  2. The supplier-list question. Which umbrellas on our preferred supplier list could withstand scrutiny without our balance sheet picking up the exposure?
  3. The continuous-record question. Where in our supply chain do we hold one dated record of who is being paid, what they are being paid, what PAYE and NICs are being remitted, and how exceptions are resolved?

If the answer is unclear, the organisation may not have a PAYE and NIC Compliance problem on paper. It may have an evidence problem in practice.

That is where compliance becomes commercially useful. An organisation that can evidence its labour supply chain controls has something tangible: a file, a record, a methodology and a governance position. An organisation that cannot evidence those controls may only have confidence that its suppliers are doing the right thing.

As Joint and Several Liability beds in alongside each monthly HMRC bulletin, the practical next step is a thirty-minute scoping call to see how the OPRaaS VCD platform could turn PAYE and NIC Compliance into one continuous, board-ready record across the contingent workforce.

 

Compliance is your asset. Evidenced, every day.

Read next

Why labour supply chain assurance is the talent strategy capability that compounds for UK boards in 2026.

Drawing on HMRC’s monthly bulletin of 22 May 2026 on tax receipts and National Insurance contributions for the UK, Chapter 11 of Part 2 of the Income Tax (Earnings and Pensions) Act 2003, HMRC’s published supply-chain due-diligence guidance, ICAEW Tax Faculty commentary, and the OPRaaS LSCA 2.0 framework documentation including Module 11 of the OPRaaS LSCA Self-Certification Course.

Talk to OPRaaS about your supply chain.

Use the contact form in the sidebar to the right of this article, or email info@opraas.co.uk.

This article is published for general information and educational purposes only. It is believed to be accurate at the time of publication and reflects the legislation, HMRC guidance, and market practice referenced. It is not legal, tax, employment, accounting, or regulatory advice and should not be relied upon as such. Compliance obligations vary by organisation, supply chain, and engagement type; please consult your own qualified legal, tax, or compliance advisor before acting on any point covered here. Any images, screenshots, dashboards, or platform displays shown are for illustration and reference purposes only and do not necessarily depict the live OPRaaS platform, live customer data, or actual on-screen output. Trademarks, framework names, and statutory references remain the property of their respective owners. While we take every care, errors can occur; if you spot an inaccuracy, please let us know at info@opraas.co.uk.

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LSCA Glossary of Terms

Glossary of Terms

Comprehensive definitions for Labour Supply Chain Assurance compliance terminology

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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.