HMRC’s CIS340 Update: A Reminder to Assess Before You Engage

On 8th July 2026, HMRC updated its Construction Industry Scheme (CIS340) guidance, specifically Appendix A.3, which relates to contracts involving construction operations.

Whilst this is not a legislative change, the revised guidance provides further clarification on HMRC’s interpretation of when the Construction Industry Scheme (CIS) applies and reinforces the importance of reviewing existing contractor engagement processes.

For recruitment agencies, labour suppliers and construction businesses, this serves as a timely reminder to ensure current practices remain aligned with HMRC’s expectations.

The updated guidance can be viewed on the official HMRC website https://www.gov.uk/government/publications/construction-industry-scheme-cis-340

Why does this matter?

When determining whether CIS applies, many businesses naturally focus on how a worker will be paid.

However, HMRC’s updated guidance reinforces that the starting point should be the contractual services being supplied and whether those services fall within the definition of construction operations.

Importantly, not every role connected to a construction project falls within the scope of CIS. Certain professional services, such as architects, surveyors and other consultancy services, remain outside the scheme where the statutory exclusions apply.

The key question should be:

“Do the contractual services being supplied fall within the scope of the Construction Industry Scheme?”

Only once that assessment has been completed should the most appropriate engagement and payment model be selected.

Review your contractor engagements

We recommend that recruitment agencies review their contractor onboarding processes and contractual arrangements to ensure every assignment is appropriately assessed before engagement.

This review should include:

The contractual relationship with the client.
The nature of the services being supplied.
Whether those services constitute construction operations or benefit from a statutory exclusion.
Whether CIS obligations arise anywhere within the labour supply chain.
Whether subcontractors have been verified before payment is made.
Whether appropriate records are retained to support the decision-making process.

Completing this assessment at the beginning of an assignment helps ensure compliance and provides a clear audit trail should HMRC review the engagement.

CIS should be assessed before the payment vehicle is chosen

One of the most common misconceptions is that CIS only needs to be considered where a worker is engaged as a self-employed subcontractor.

In reality, the CIS assessment should form part of the initial onboarding process for every assignment connected to the construction sector.

Only once that assessment has been completed should the most appropriate engagement model be selected.

This applies regardless of whether the worker is ultimately engaged through:

Umbrella PAYE
Agency PAYE
Self-employed CIS
A limited company or another compliant engagement model

The payment vehicle should be the outcome of the compliance assessment, not the starting point.

A practical consideration for recruitment agencies

Many umbrella providers operate multiple legal entities to support different engagement models, for example one entity for PAYE workers and another for CIS subcontractors.

Whilst this can be an effective operational model, agencies should satisfy themselves that workers are being onboarded under the correct legal entity following an appropriate CIS assessment.

Simply engaging a worker through a PAYE umbrella does not automatically remove the need to consider whether the assignment falls within the scope of the Construction Industry Scheme. Likewise, assuming a worker should be engaged under CIS without first assessing the contractual services being supplied may also create compliance risk.

Where a worker is inadvertently onboarded under the wrong entity or engagement model, HMRC may conclude that CIS should have been operated. Depending on the circumstances, HMRC may seek to recover the CIS tax that should have been deducted (which may be 20% or 30% depending on the subcontractor’s verification status), together with any applicable interest and penalties.

Recruitment agencies should therefore ensure their payroll partners have robust onboarding procedures and undertake an appropriate CIS assessment before determining the payment model.

Don't overlook the wider labour supply chain

Construction labour supply chains have become increasingly complex, often involving end clients, Managed Service Providers (MSPs), tiered recruitment agencies, payroll providers and subcontractors.

Each organisation within the supply chain should understand its own compliance responsibilities rather than assuming another party has already undertaken the necessary assessment.

Documented decision-making, appropriate due diligence, and consistent onboarding processes are becoming increasingly important as HMRC continues to focus on compliance across the wider labour supply chain.

What happens if CIS isn't operated correctly?

Where CIS should have been applied but deductions are not made, HMRC may seek to recover the tax that should have been deducted from the contractor responsible for operating the scheme, together with any applicable interest and penalties.

In addition to the financial implications, businesses may also face:

Increased scrutiny during HMRC compliance reviews.
Potential implications for Gross Payment Status, where applicable.
Wider questions regarding supply chain due diligence and governance.

Determining whether CIS applies is just as important as operating the deduction itself.

A reminder on Gross Payment Status

Receiving payment under Gross Payment Status (GPS) does not remove an engagement from the Construction Industry Scheme.

Where a subcontractor has successfully been verified for Gross Payment Status:

The subcontractor should still be verified before payment.
Payments should still be included on the contractor’s monthly CIS return.
The only difference is that no CIS deduction is made.

Similarly, where no reportable subcontractor payments have been made during a return period, businesses should ensure they understand their obligations regarding monthly nil CIS returns under the current HMRC requirements.

The 8^th July 2026 update to CIS340 may appear relatively minor, but it reinforces an important principle: every assignment should be assessed on its own facts before a decision is made on how a worker is engaged and paid.

For recruitment agencies and construction businesses alike, a documented assessment process helps demonstrate that the correct considerations have been made, whether the outcome is that CIS applies or that the engagement falls outside the scheme due to one of the statutory exclusions.

As labour supply chains become increasingly complex and HMRC continues to refine its guidance, taking the time to review existing onboarding procedures and contractual assessments can help reduce future compliance risk, strengthen internal governance and provide a clear audit trail should HMRC undertake a compliance review.

If you would like to discuss the latest CIS340 update or how the Construction Industry Scheme may apply to your business, please contact the team at QPS. We are always happy to discuss practical scenarios and share our experience of supporting recruitment agencies, contractors and construction businesses with CIS compliance.

This article is intended as general guidance based on HMRC’s published CIS340 update dated 8 July 2026. It should not be relied upon as legal or tax advice. Businesses should consider their own circumstances and seek professional advice where appropriate.