Dealing with the Construction Industry Scheme (CIS) can feel complicated and a bit overwhelming. Whether you’re hiring someone or working for someone in construction, knowing how to register for CIS as contractor is key. It helps you stay compliant and manage your construction payments efficiently. This guide will walk you through the CIS registration process, step by step.
What the CIS is all about?
The Construction Industry Scheme (CIS) is a set of rules from HMRC CIS register that governs how contractors pay subcontractors in the building industry. The main goal of CIS is to prevent tax evasion by ensuring that contractors deduct tax from subcontractor payments before passing them to HMRC.
Why CIS registration is important?
The CIS registration process is crucial for compliance and financial security in the construction industry. Under HMRC CIS register, contractors must deduct tax from subcontractors’ payments and submit it to HMRC.

Key industry insights:
- High Non-Compliance Risk:
- The construction sector is a common target for tax evasion due to high cash transactions.
- HMRC reported that over £3 billion in unpaid taxes were recovered in 2022 due to CIS non-compliance.
- Growing Number of Self-Employed Workers in Construction:
- According to ONS (Office for National Statistics), around 36% of construction workers in the UK are self-employed.
- This makes CIS registration one of the most widely used tax schemes by HMRC.
- Penalty Risks for Contractors and Subcontractors:
- Failing to complete contractor registration for CIS or incorrectly submitting CIS returns can lead to penalties:
- £100 fine for missing a deadline by 1 day.
- £300 or 5% of tax due (whichever is greater) if over 6 months late.
- Up to £3,000 fine for failing to verify subcontractors.
- Failing to complete contractor registration for CIS or incorrectly submitting CIS returns can lead to penalties:
- Benefits of CIS Registration:
- For Contractors : Avoids legal issues and ensures tax compliance.
- For Subcontractors: Can receive lower tax deductions (20% instead of 30%) if correctly registered.
Need help? Contact the CIS Registration Helpline

How to register for CIS as Contractor or Subcontractor?
Registering for CIS with HMRC is essential for all construction professionals. Follow these steps:
Step 1: Work out what you are
Determine whether you need to register as a contractor or subcontractor.
- Contractors: Businesses or individuals who hire subcontractors for construction work.
- Subcontractors: Workers who are hired by contractors to carry out construction tasks.
For details, check HMRC Register for CIS Online
Step 2: Get your information ready
Ensure you have the correct details before proceeding with contractor registration for CIS:
Find Your National Insurance Number
Need help? Contact HMRC CIS Contact Number for support.
Step 3: Register as someone who hires (Contractor)
To register as a contractor, follow these steps:
Register Online:
- Go to the HMRC Register for CIS page and log in with your Government Gateway account.
Step 4: Register as someone who’s hired (Subcontractor)
Register Online:
- Visit : HMRC CIS Register and log in.
Step 5: Can you pay someone without a UTR?
No, a subcontractor must have a UTR number for CIS payments.
For more details, visit : HMRC CIS Contact
Step 6: Know what you need to do?
Submit Monthly CIS Returns:
- File Your Monthly CIS Return For more details, refer to HMRC CIS Contact Number
Need help with CIS registration?
Conclusion
Registering for the Construction Industry Scheme (CIS) is essential for both contractors and subcontractors to stay compliant with HMRC regulations. By following the CIS registration process, you can ensure smooth tax deductions, avoid penalties, and maintain accurate records. Whether you’re hiring subcontractors or working under a contractor, registering with HMRC CIS register helps you manage payments legally and efficiently.
If you have any questions or need assistance, you can reach out to HMRC CIS Contact Number or visit the official HMRC Register for CIS Online page.
Stay compliant, keep records, and make the most of the CIS scheme to run your construction business smoothly!