A Change That Slipped Through Quietly
Ask a UK practice owner what has dominated 2026 and you will hear about quarterly updates, then AML supervision, then Companies House. Almost nobody mentions umbrella companies. Yet on 6 April 2026, a change took effect that can move a six figure PAYE debt from a company your client has never met onto your client's own balance sheet.
The new Chapter 11 of Part 2 of the Income Tax (Earnings and Pensions) Act 2003 makes a "relevant party" in a labour supply chain jointly and severally liable for PAYE and Class 1 National Insurance where an umbrella company fails to account for it. In practice that means the recruitment agency immediately above the umbrella, or, where there is no agency in the chain, the end client business itself.
If you act for any business that engages temporary or contract labour through a third party, this belongs on your next planning call.
What Actually Changed, and What Did Not
There is a persistent misunderstanding worth clearing up first, because it is the one that causes firms to give the wrong advice.
- The umbrella company is still the employer. It continues to calculate PAYE, run the payroll and file Real Time Information submissions.
- Your client does not have to take over the payroll. Agencies are not required to operate PAYE for umbrella workers from April 2026.
- What changed is who pays when the umbrella does not. HMRC can now pursue the agency, or the end client, for the full unpaid amount, plus interest and penalties.
The policy logic is simple. Non compliant umbrella companies deduct PAYE from workers, fail to remit it, and then dissolve with no assets for HMRC to recover. Joint and several liability gives HMRC a solvent, identifiable party to pursue instead.
Which of Your Clients Are Exposed
This is not a niche recruitment sector issue. Run your client list against these categories:
- Recruitment agencies and staffing businesses of any size that place workers through umbrella companies
- Managed service providers and neutral vendors sitting in the middle of multi tier supply chains
- Construction and civil engineering clients using subcontracted labour alongside CIS arrangements
- Care homes, healthcare providers and schools filling shifts through agencies
- Logistics, warehousing, events and hospitality clients with seasonal peaks in temporary labour
- Any client contracting directly with an umbrella company, because with no agency in the chain, the liability lands on them
A useful trigger question for the year end file: does this business pay any entity for the supply of people rather than for the supply of a service or goods? If the answer is yes, the chain needs mapping.
Why the Usual Defences Do Not Help
Advisers are used to reasonable care arguments and to leaning on accreditation. Both are weaker here than clients expect.
- Liability can arise without fault. A client who acted in good faith and carried out sensible checks can still receive a demand.
- Accreditation is comfort, not protection. If an accredited provider fails, your client's exposure does not disappear.
- Payslip checks prove deduction, not payment. Confirming that PAYE was deducted from a worker tells you nothing about whether the money reached HMRC. That gap is precisely where the risk lives.
- Contractual indemnities are only as good as the counterparty. An indemnity from a company that has been dissolved is worthless.
The Checks That Actually Matter
Every commentator tells clients to do due diligence. Fewer say what good looks like. Here is a practical framework you can put in front of a client this month:
- Map the chain in writing. Identify every entity between your client and the worker, with company numbers. Chains longer than two links deserve scrutiny.
- Reduce the panel. A shortlist of a few known providers is far easier to monitor than an open list of dozens.
- Ask for evidence of payment, not just calculation. Request periodic confirmation that PAYE and NIC liabilities have been settled, and treat reluctance as a red flag.
- Watch the margin. Rates that look too good usually are. Unexplained pricing is often funded by tax that is never remitted.
- Check the basics regularly. Filing history, director changes, frequent restructures, newly incorporated replacements for previous suppliers.
- Look at the worker's payslip. Unexplained allowances, loans or advances are classic signs of an avoidance model.
- Document everything, and keep it. If HMRC comes calling, a contemporaneous file of checks is your client's strongest position, even where strict liability applies.
What to Do in the Next Thirty Days
You do not need a new service line to add value here. You need a short, deliberate sweep.
- Segment your client list and flag every business that engages labour through a third party.
- Send a targeted briefing to those clients. Two paragraphs explaining that liability can now reach them will start more conversations than a general newsletter ever will.
- Add a labour supply chain question to your year end checklist so this is captured as standard rather than by memory.
- Review engagement letters. Be explicit about whether supply chain due diligence sits inside or outside your scope.
- Record the outcome centrally. Keeping the mapping, the checks and the client correspondence in your practice management system rather than in individual inboxes means the evidence is still there in two years, when an enquiry actually arrives.
A Compliance Risk With an Advisory Upside
Firms have spent 2026 looking for ways to turn compliance change into fee earning advice. This is one of the cleaner examples. Supply chain mapping, supplier vetting, contract review and an annual monitoring routine are all discrete, chargeable pieces of work with an obvious value story: the alternative is your client paying somebody else's PAYE bill.
It is also a differentiator. Very few practices are proactively raising this. The firm that calls a construction or care sector client before HMRC does is the firm that keeps that client.
The Bottom Line
The umbrella company rules that took effect on April 6th 2026 did not change who runs the payroll. They changed who pays when the payroll taxes never arrive. For any client engaging temporary labour through a third party, the risk is no longer someone else's problem, and it will not be discovered at a convenient moment.
Review your client list this month, map the chains, document the checks and put the evidence somewhere it can be found. It is a short piece of work now, and a very expensive one to leave until an enquiry letter lands.