If your business engages workers through an umbrella company, the new umbrella company tax rules could leave you liable for someone else’s mistake. From 6 April 2026, unpaid PAYE and National Insurance can transfer straight up the supply chain. As a result, the risk no longer sits solely with the umbrella.
For UK SME owners who use agency staff or contractors, this is a genuine shift. Consequently, understanding exactly how these umbrella company tax rules work has never been more important.
What Has Actually Changed?
Previously, if an umbrella company failed to pay HMRC the correct PAYE or National Insurance, the debt generally stayed with that umbrella. Even where the company folded, the tax liability effectively died with it.
That loophole has now closed. Under the new rules, HMRC can pursue a “relevant party” further up the labour supply chain for the shortfall. Therefore, the financial risk has moved firmly onto the businesses that engage umbrella workers.
Who Counts as the “Relevant Party”?
The rules identify who HMRC will chase first if an umbrella company underpays. This isn’t automatically the umbrella itself.
- Where there’s a recruitment agency: The agency that holds the contract with the end client typically becomes liable first.
- Where there’s no agency: Liability falls to the end client business directly.
- Genuine employer test: What matters isn’t what a company calls itself, but whether it actually operates as a genuine employer in practice.
Compliance Warning: This is a tax liability shift, not a payroll transfer. The umbrella still runs PAYE day-to-day. However, if it fails to pay HMRC correctly, your business could be the one HMRC contacts.
Don’t Confuse This With Wider Umbrella Regulation
It’s easy to conflate this change with other umbrella company news. However, this April 2026 measure is purely a tax compliance change.
A separate reform under the Employment Rights Act 2025 will regulate umbrella companies as employment businesses in their own right. That reform sits on a later timeline, expected around April 2027. It addresses employment rights and standards, not tax liability.
What This Means for Your Supply Chain
If your business uses umbrella workers, passive trust in your existing arrangements is no longer enough. Active, ongoing due diligence is now essential.
Consider the following steps:
- Review your supply chain. Map out every agency and umbrella company your business engages with, directly or indirectly.
- Ask for evidence of PAYE compliance. Request confirmation that tax and National Insurance are being paid correctly and on time.
- Watch for red flags. Be cautious of “fixed take-home pay” promises, since compliant PAYE calculations don’t work that way.
- Document your checks. Due diligence won’t remove liability entirely, but it does demonstrate reasonable care if HMRC ever asks questions.
How Hewitts Payroll Helps
Navigating the new umbrella company tax rules shouldn’t mean wading through supply chain risk alone. At Hewitts Payroll, we help businesses review their labour supply arrangements and spot compliance gaps before HMRC does.
We also support clients in bringing payroll fully in-house, or partially outsourced, where umbrella arrangements no longer feel like the right fit. Furthermore, our team stays current on every phase of this reform, including the wider 2027 regulation still to come.
Protect Your Business From Someone Else’s Tax Debt
These umbrella company tax rules mark a real change in where risk sits. However, with proper due diligence and the right payroll partner, that risk is entirely manageable.
Don’t wait for an HMRC letter to test your supply chain. Contact Hewitts Payroll Services today for a free consultation, and let us help you build a compliant, low-risk approach to umbrella and agency working.
This article is for general informational purposes only and does not constitute professional or legal advice. Payroll and tax requirements can vary based on individual business circumstances. Please contact Hewitts Payroll Services or a qualified professional advisor for guidance specific to your organisation.
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