Tax Returns For The Construction Industry

Let us take care of your self-assessment and reclaim your (Construction Industry Scheme) CIS tax.

Subbie Reclassification Protection
Payroll Made On Time Every Time
Zero Risk Of Employment Tribunals
Expert CIS Support and Advice

We Remove the Stress of Self-Assessment Tax Returns

Upon registering as a CIS subcontractor, HMRC will prompt you to fill out a Self-Assessment Tax Return for each tax year (from 6 April to 5 April) in which you earned self-employment income. Regardless of the amount of CIS self-employment income for a given tax year, it is mandatory to complete a Self-Assessment Tax Return.

After each tax year, numerous CIS subcontractors may be eligible for a CIS tax refund. However, it is important to note that you can only receive this refund after successfully completing your Self-Assessment Tax Return.

With tax going fully digital in 2024, Contractwise can take care of submitting your tax return online saving you hours of your time and more importantly ensuring your tax return is submitted correctly.

How To Register for Self-Assesment?

You need to register with HMRC for Self Assessment by the 5th of October following the conclusion of the tax year in which the income or gains initially occurred, otherwise, penalties may be imposed.

To register, you have the option to contact HMRC at 0300 2003210 or complete the registration process online.

At Contractwise, we ensure that each subcontractor is registered for self-assessment and possesses a Unique Tax Reference (UTR) number upon registration (or has at least initiated the application process). This is a prerequisite for us to ascertain individual CIS deductions.

Contact Us


Eliminating reclassification risk by HMRC with CIS compliance and seamless payroll, every time.


Ensure you’re paid correctly on time, every time as well as benefiting from our expert guidance and resources.


Keep your construction staff compliant with CIS deductions and protect yourself from HMRC fines.

Need Some Advice?

Our experts are here to answer your questions.

Discover how Contractwise can help you be fully compliant to eliminate your HMRC and employment risks, call us or fill in your details and we will call you back.


What our customers say

  • Contract Wise has streamlined our payroll operations and also boosted our confidence in compliance. A reliable partner for any construction business navigating CIS. ⭐️⭐️⭐️⭐️⭐️

    Jake A - Managing Director

We Guarantee

Protection from HMRC reclassifing your subbies as employees.

If HMRC were to reclassify just one self-employed subbie as an employee with an average weekly pay of £1,000, the liability would surpass £9,500 in a year.

For a group of 15 self-employed subbies, this liability would escalate to over £136,000. These staggering amounts exclude potential HMRC fines, unpaid interest charges, or legal costs associated with challenging HMRC.