The UK Rules
Construction Industry Scheme (CIS)

Construction Industry Scheme (CIS)

The Construction Industry Scheme is one of the special tax deduction schemes. As a rule, tax gets deducted at source from CIS payments relating to building work.

Information in this help guide focuses on the responsibilities and obligations for Construction Industry Scheme contractors and subcontractors.

CIS RULES: This guide explains what the Construction Industry Scheme is and how it works.

Specific types of work gets covered by the scheme. Some workers will need to check if they should register as a contractor or subcontractor.

Contractors will deduct money from the payments made to a subcontractor. They will then pass them on to HM Revenue and Customs.

The deductions count as advance payments under CIS scheme rules. Thus, it helps to cover tax and National Insurance for subcontractors.

All contractors must register and follow the Construction Industry Scheme rules. There is no such requirement for subcontractors to join the scheme. But, those who are not registered will have tax deductions taken from their payments at a higher rate.

Note: A different section explains what you must do as a Construction Industry Scheme (CIS) subcontractor.

CIS Registering as a Contractor or Subcontractor

You must register as a contractor if either of these apply to you:

  1. You make payments to subcontractors for construction work.
  2. Your business does not carry out construction work. But, you spend than £1 million a year (on average) on construction in any 3-year period.

Note: You can register as a subcontractor if you carry out construction work for a contractor. If your situation falls into both categories you should register for both.

Construction Industry Scheme Works

As a rule CIS will cover most construction work related to:

In more detail, CIS construction works will include:

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Note: A different section explains what you must do as a Construction Industry Scheme (CIS) contractor.

CIS Scheme Exemptions for Registration

There are certain jobs that qualify as Construction Industry Scheme exemptions and do not require registration. You will not need to register for CIS if you only do work like:

Note: Check the government 'CIS 340 guide for contractors and subcontractors'. The publication has further details on what the scheme covers.

CIS Business Based Outside the United Kingdom

The Construction Industry Scheme (CIS) covers construction work conducted in the UK. But it also applies to some work based abroad. There are different registration processes for sole traders, partnerships and companies.

Check how to register and pay tax through the CIS scheme for businesses based outside the UK if this situation applies to you.

ALSO IN THIS SECTION

Construction Industry Scheme Contractor

CIS contractors pay subcontractors for carrying out construction work. Besides registering with HMRC, and filing monthly returns, check what you must do as a CIS contractor.


Construction Industry Scheme Subcontractor

CIS subcontractors get paid by contractors for doing all kinds of building work. Besides registering with HMRC, check what you must do as a CIS subcontractor in United Kingdom.


Construction Industry Scheme Online Service

You can sign up or log in to use the Construction Industry Scheme online service. It is useful for filing contractor monthly returns or for verifying a subcontractor.


Pay CIS Late Filing Penalty

There is a penalty for the late filing of Construction Industry Scheme (CIS) monthly return. Find out how to pay a CIS late filing penalty and the different methods of payment.


Construction Industry Scheme (CIS) for Business Tax Payments

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