Labour supply chain liability (From 6 April 2026)

Umbrella Company Reform – PAYE in Labour Supply Chains

From 6 April 2026, new rules will apply to labour supply chains involving umbrella companies.

What’s changing?

Where a worker is supplied through:

Worker → Umbrella → Agency → End Client

If PAYE/NIC is not correctly accounted for, HMRC can pursue parties higher up the chain.

This introduces joint and several liability.

Who can be liable?

Depending on structure and who controls payment:

• The umbrella company
• The recruitment agency
• In some cases, the end client

If HMRC cannot recover tax from the umbrella, it may move up the chain.

What this means in practice

Agencies and end clients must now:

Conduct proper due diligence on umbrella providers

Understand payroll models and margin deductions

Ensure PAYE is genuinely operated

Include contractual protections and audit rights

The days of “we didn’t know how the umbrella operated” as a defence are effectively over.

Personal Liability - Directors & Senior Managers

This is where things become more serious.

Director Liability for Tax Failures

HMRC already has powers under:

• Social Security legislation
• Fraudulent evasion rules
• Director disqualification regimes

From 2026 onwards, with the new supply chain rules, risk exposure increases significantly for individuals who:

Knowingly facilitate non-compliant umbrella arrangements

Turn a blind eye to tax avoidance schemes

Fail to take reasonable compliance steps

Personal exposure can include:

• Personal liability notices
• Fines and penalties
• Director disqualification
• In extreme cases, criminal prosecution

HMRC has increasingly shown willingness to look beyond the corporate entity where there is deliberate or reckless behaviour.

How this interacts with IR35

Although IR35 itself is not being rewritten in 2026, the combination of:

Off-payroll rules (medium/large businesses remain responsible for status decisions)

New umbrella PAYE chain liability

Increased compliance scrutiny means risk is stacking in two areas:

If a contractor is inside IR35:

• PAYE must be properly operated.
• If paid through an umbrella, that umbrella must be compliant.
• If it isn’t, liability may cascade.

If a contractor is outside IR35:

Status decisions must be defensible.

Failure to take “reasonable care” can shift liability back to the fee-payer.

In short: tax risk is no longer easily contained at one point in the chain.

Why Government is doing this

The 2026 reforms are aimed at:

• Tackling umbrella tax avoidance models
• Preventing mini-umbrella fraud
• Closing supply chain “phoenixing” structures
• Ensuring PAYE integrity

The policy direction is clear:

Responsibility will sit with whoever is best placed to prevent non-compliance.

And that increasingly means agencies and end clients, not just intermediaries.

Strategic implications for businesses

If you're engaging contractors or running labour supply, you now need:

• Formal supply chain risk assessments
• Documented umbrella due diligence
• Clear SDS (IR35) processes
• Strong indemnities and audit rights
• Board-level oversight

This is moving from a payroll issue to a corporate governance issue.