Joint & Several Liability: What the April 2026 Umbrella Company Rules Mean for Clients

Joint and Several Liability is a 2026 tax rule that lets HMRC recover unpaid PAYE and National Insurance from recruitment agencies or end-clients when an umbrella company in the supply chain fails to pay. The rules apply to payments made on or after 6 April 2026. JSL sits alongside the wider April 2026 umbrella company regulations as the second major 2026 reform to contractor engagement.

What is Joint & Several Liability (JSL)?

JSL makes the recruitment agency, or the end-client where no agency is involved, jointly liable with the umbrella company for any unpaid PAYE income tax and Class 1 NICs. The measure was introduced through Finance Bill 2025-26, which inserts a new Chapter 11 into Part 2 of the Income Tax (Earnings and Pensions) Act 2003. HMRC confirmed the go-live date as 6 April 2026 in its policy paper published on GOV.UK.

The practical effect is simple. If an umbrella company fails to remit payroll taxes, HMRC will pursue the relevant party up the chain first. That relevant party is the recruitment agency supplying the worker, or the end-client where the client contracts directly with the umbrella with no agency in between.

KPMG's analysis of the Finance Bill confirms that there is no right of appeal or reasonable excuse defence for the relevant party, even where fraudulent information was supplied by the umbrella.

Why has HMRC introduced JSL?

HMRC estimates 700,000 workers were engaged by umbrella companies in 2022-23, with over a third of them paid through non-compliant providers at a cost to the Exchequer of at least £500 million a year. The policy paper identifies four recurring failure modes: unremitted PAYE, disguised remuneration schemes, opaque payslip structures, and phoenix behaviour where providers dissolve before liabilities are settled.

JSL pushes financial accountability up the supply chain so that the party selecting the umbrella carries the consequence of that selection. Deloitte describes the shift as a continuation of government policy to move tax obligations toward the ultimate user of the worker's services. This sits inside the broader compliance landscape covered in our analysis of how changes to UK company size thresholds impact IR35 off-payroll working rules, the other significant 2026 contractor compliance shift.

What does JSL mean for end-clients using contract labour?

End-clients now carry direct financial exposure whenever an umbrella sits in the supply chain they control. Three practical consequences matter.

Due diligence is no longer optional paperwork. It is the primary tool for reducing, though not eliminating, the risk of a liability transferring to the client. Our IR35 guidance for end-clients sets out the parallel compliance picture, and our compliant payroll models explained resource covers the engagement structures that reduce JSL exposure materially.

Supply chain visibility has become a board-level issue. HR, procurement, legal, and finance all touch contractor engagement, and under JSL no single department can be allowed to own it in isolation.

Evidence retention matters. Contracts, audit certificates, and payment records must be retrievable on demand if HMRC opens an enquiry.

Scantec engages a small proportion of workers through umbrella arrangements, with the majority placed on direct PAYE contracts through Scantec-operated payroll. Clients using Scantec for contract and temporary recruitment solutions across engineering, nuclear, or energy roles therefore carry materially lower JSL exposure than the market average.

How should clients audit their umbrella supply chain before an HMRC enquiry?

Use the five-step sequence below. It mirrors HMRC's published supply chain due diligence guidance and covers the evidence you will be asked to produce if a liability is proposed.

1. Step 1: Map every labour route. Identify every agency, MSP, and umbrella company currently paying workers on your sites. Include short-term cover and project-based engagements.
2. Step 2: Verify umbrella accreditation. Confirm each umbrella holds current FCSA or Professional Passport accreditation and request the most recent audit certificate.
3. Step 3: Sample-check worker payslips. Cross-reference gross pay, PAYE deductions, and NICs against payment records for a sample of workers each quarter.
4. Step 4: Retain evidence centrally. Store contracts, Key Information Documents, and due diligence records in one accessible system. Disconnected spreadsheets will not stand up to HMRC scrutiny.
5. Step 5: Review supplier lists annually. Cross-check your umbrella panel against HMRC's published list of named tax avoidance schemes and promoters at least once per year.

How Scantec protects clients under the new rules

Compliance sits at the centre of how Scantec engages contract labour. In 2017 Scantec became the first UK employment business to sign the FCSA Recruiter Accreditation scheme, which requires annual third-party audit of every umbrella on the Approved Supplier List.

In preparation for 6 April 2026, Scantec completed a full refresh across four areas. The Approved Supplier List has been rebuilt, with each umbrella re-audited against FCSA standards. Due diligence protocols are applied before any new umbrella engagement is authorised. Quarterly monitoring tracks payment accuracy across live umbrella placements. Client and worker transparency documents cover payment flow, deductions, and KIDs.

This process is documented and auditable. If HMRC opens an enquiry on a Scantec-placed worker, the evidence pack exists and is retrievable. The same compliance posture sits across engineering recruitment and our wider sector specialisms, as covered in our analysis of key trends impacting the technical engineering recruitment market.

What happens next for the umbrella sector?

JSL is a tax measure, not full regulation of umbrella companies. A separate regulatory regime is scheduled for 2027 under the Employment Rights Bill, bringing umbrella companies under the remit of the new Fair Work Agency. The Agency began operating on 6 April 2026 with a remit covering National Minimum Wage enforcement and, from 2027, wider umbrella regulation.

Clients should expect the compliance bar to rise again in 2027. Building a documented due diligence process now, rather than reacting later, positions your contingent labour strategy for both phases of reform. The contract demand picture driving this matters as well, and our engineering jobs market update sets out the underlying supply and demand drivers.

Frequently Asked Questions

When did Joint and Several Liability take effect?

JSL applies to payments made to umbrella company workers on or after 6 April 2026. The first affected contractor payday was 17 April 2026.

Does JSL apply if we use a recruitment agency rather than an umbrella directly?

Yes. Where an agency supplies workers through an umbrella, the agency is the relevant party HMRC pursues first. The end-client is pursued only where no agency sits in the chain.

Can strong due diligence remove liability under JSL?

No. The regime operates on strict liability with no statutory defence. Due diligence reduces risk exposure and supports the selection of compliant suppliers but does not extinguish liability if a failure occurs.

Does JSL cover National Insurance as well as PAYE?

Yes. Joint and several liability covers both PAYE income tax and Class 1 NICs. Equivalent provisions for NICs sit in secondary legislation alongside the ITEPA amendment.

What should we do if we contract directly with an umbrella company?

Where no agency sits between the client and the umbrella, the end-client is the relevant party for JSL purposes. Review the arrangement against HMRC supply chain guidance and consider whether an FCSA-accredited agency engagement reduces overall exposure.

Speak to our team

If you want to understand how Joint and Several Liability affects your current contingent workforce arrangements, Scantec's team can review your supply chain, evidence pack, and umbrella panel against the new rules. Email info@scantec.co.uk or visit our consultants page to start a confidential conversation.

Author

Peter Bates founded Scantec in 1990 and still leads the business today. Over 35 years, he has built a specialist engineering, manufacturing and scientific recruiter on four principles: delivery, integrity, transparency and compliance. His focus remains consistent, placing the right people, running a compliant operation and developing a team equipped to do the same.

Article reviewed: 20 April 2026