Umbrella Company Reform Is Coming in April — Here's What Agencies and End Clients Need to Know

The way umbrella companies operate in the UK labour market is about to change significantly. From April 2026, the government is introducing the first formal regulation of umbrella companies — and with it, a new concept that will fundamentally shift where the compliance risk sits when things go wrong.

If your business uses contractors or temporary workers supplied through umbrella companies, this matters to you whether you're an agency placing workers or an end client engaging them.

What's actually changing?

Until now, if an umbrella company failed to operate PAYE correctly, didn't deduct National Insurance contributions, or operated some form of tax avoidance scheme, the liability sat primarily with the umbrella company itself. Agencies and end clients could, in most cases, argue they weren't directly responsible for what was happening further down the supply chain.

From April 2026, that changes. The new legislation introduces joint-and-several liability for agencies and end clients, meaning that if an umbrella company in your supply chain fails to meet its tax obligations, HMRC will be able to recover those unpaid tax debts from you — not just from the umbrella.

In practical terms, this means the financial and reputational consequences of using a non-compliant umbrella company are no longer limited to the umbrella itself. They travel up the supply chain to the agency that placed the worker and, in some cases, to the end client that engaged them.

Why has it come to this?

Umbrella companies have become a standard feature of how temporary and contract labour is structured in the UK, but the sector's rapid growth has brought with it some serious problems that HMRC has been trying to address for years.

The issues include mini umbrella company structures specifically designed to exploit National Insurance contribution and VAT reliefs in a way that was never intended, umbrella companies that fail to operate PAYE correctly or at all, arrangements where workers' pay is being skimmed or unlawful deductions are being made, and disguised remuneration models that are marketed as legitimate umbrella arrangements but are in reality tax avoidance schemes.

The 2026 legislation is HMRC's response to the fact that enforcement action against the umbrella companies themselves hasn't been sufficient to clean up the market. By extending liability up the supply chain, the intention is to make agencies and end clients financially motivated to care about who they're working with.

How does this interact with other risks you're already managing?

The umbrella reforms don't exist in isolation — they layer on top of an already complex compliance landscape for businesses using contingent labour. It's worth understanding how the pieces fit together.

IR35 and off-payroll working — if you're an end client engaging contractors, you're already responsible for making status determinations and taking reasonable care in doing so. Getting that wrong can create PAYE and NIC liabilities for the end client. The umbrella reforms add another dimension, because even where a worker is correctly assessed as outside IR35, the way their pay is processed through an umbrella company becomes your concern too.

Employment status — misclassifying workers as self-employed when they should be treated as workers or employees remains a significant area of HMRC focus. The financial and legal exposure here includes unpaid holiday pay, minimum wage obligations, and employment rights claims — all sitting alongside the tax compliance questions.

Construction Industry Scheme — for businesses in construction, the April 2026 changes also include new CIS legislation giving HMRC powers to withdraw Gross Payment Status from subcontractors who knew or should have known that payments were connected to fraudulent tax evasion. Onboarding processes in construction need to start from the question of whether a worker is employed rather than self-employed.

Intermediaries reporting — agencies are already required to report non-PAYE engagements to HMRC, and errors or omissions in that reporting can trigger penalties. Once the umbrella reforms are in place, HMRC is expected to increase its scrutiny of this data, making accuracy even more important.

What should you be doing now?

The April 2026 deadline isn't far away, and given the compliance work involved, now is the time to act rather than wait.

The starting point for most organisations is a thorough review of their supply chain. That means auditing all umbrella companies you currently work with, requesting documentation around their PAYE and RTI processes, and identifying any that are using arrangements — whether salary sacrifice structures, holiday pay manipulation, or anything else — that don't stack up on scrutiny. If you find umbrellas you can't get clear answers from, that's a significant red flag.

Your contracts and commercial terms also need reviewing. Agreements with umbrella companies and agencies should clearly define compliance expectations, information-sharing obligations, audit rights, and what happens if a party is found to be non-compliant. Indemnity provisions that didn't matter much before become considerably more important when joint-and-several liability is in play.

Internally, it's worth making sure that HR, payroll, finance, and procurement all understand what's changing and what their responsibilities are. Labour supply chain compliance is no longer just a tax team concern — it touches every part of the business that touches the workforce.

For some organisations, the reforms will also prompt a broader question about whether the umbrella model is the right one going forward. Direct PAYE, agency payroll, or other employment models carry different risk profiles, and for businesses where volume of contingent labour is high and risk tolerance is low, now is a sensible time to reassess whether the current structure is still the right one.

The bottom line

The umbrella reforms represent a genuine shift in where compliance responsibility sits in labour supply chains. The businesses that will be best placed are those that start treating supply chain due diligence as a serious, documented process rather than an afterthought — and that do so now, before April 2026 arrives.

Ignoring this and hoping your umbrella companies are compliant is no longer a viable approach. Under the new rules, if they're not, you may be the one picking up the bill.

We can help

Whether you need help reviewing your current labour supply chain arrangements, understanding how the reforms interact with your existing IR35 or employment status position, or want support preparing your internal governance processes — the team at Alera Accounting & Advisory is here to help.

Get in touch today and let's make sure you're ready ahead of April.