Tax Compliance

CIS for Contractors and Subcontractors

The Construction Industry Scheme (CIS) is a critical tax framework for those working in the UK construction sector. It sets out when and how contractors deduct tax from subcontractors and then pay the CIS tax to HMRC.

Whether you are a contractor paying for work to be done, or a subcontractor carrying out the work, managing your obligations correctly is vital for reliable cashflow and compliance.

Why good CIS management matters

If you operate as a contractor or subcontractor in the construction industry, getting CIS right means:

Tax and legal compliance obligations are met through accurate monthly returns
Cashflow is protected by ensuring the correct 20% or 30% deduction rates are applied
Costly HMRC penalties are avoided by filing your monthly returns by the 19th of each month
Business credibility is enhanced by maintaining a clean compliance record with HMRC
Subcontractors are paid accurately with the correct deductions

A good CIS service is one that is accurate, efficient, and proactive in managing the relationship between you and HMRC. The aventae CIS service goes further…

Why work with aventae on CIS?

At aventae, we are experienced with the CIS scheme and when it applies to the contractor and subcontractor relationship. We ensure that the scheme rules apply to the work being carried out to ensure the reporting is correct.

For contractors and subcontractors of all sizes:

Register you for CIS as a contractor, subcontractor, or both

Verify your subcontractors with HMRC to confirm their correct tax deduction status

Calculate and file monthly CIS returns to ensure you remain fully compliant

Provide Payment and Deduction Statements to subcontractors for their records

Advise on Gross Payment Status to help eligible subcontractors improve their cashflow.

Ready to get started with aventae’s CIS services?

We have a simple five-step process to get your CIS compliance on track:

Initial Consultation

Talk to us about your role in the construction industry, whether you hire others or work for a main contractor, and your current volume of work

Scheme registration

If you haven't already, we’ll help you register for CIS with HMRC and ensure you have the necessary UTR and PAYE references

Subcontractor verification

For contractors, we will verify all your workers with HMRC to determine if they should be paid gross or at the 20% or 30% deduction rate

Ongoing monthly compliance

We will process your monthly payments, calculate deductions, and submit your CIS returns to HMRC by the strict 19th-of-the-month deadline

Continued support

We’re here to support your growth, helping you manage your cashflows and your transition to Gross Payment Status when eligible.

Time to get in touch

We’d be pleased to guide you through the intricacies of the Construction Industry Scheme and support your business's growth. Let’s get started on your CIS services so you can focus on the job at hand with complete peace of mind.

Get Started