CIS Exemptions Explained: Which Work, Trades and Businesses Are Excluded

There is no such thing as a Construction Industry Scheme (CIS) exemption certificate. CIS simply does not apply in certain situations, such as where the work is not classed as construction work by HMRC or where the construction work is carried out entirely outside the UK. 

This is different from Gross Payment Status. A CIS exemption means the payment falls outside the scheme, while Gross Payment Status means the work is covered by CIS but HMRC has approved the subcontractor to receive payments without deductions. 

Is There a Construction Industry Scheme Exemption Certificate? 

No. HMRC does not issue a CIS exemption certificate. CIS simply does not apply in certain situations, such as when the work is not a construction operation, the work is carried out entirely outside the UK, or HMRC has approved a specific small payment arrangement. 

CIS only covers certain types of construction work. Activities such as professional design services, supplying materials only, and scaffolding hire without labour are outside the scheme. Employees are also not covered by CIS because they are paid through PAYE rather than as subcontractors.

The £1,000 Small Contract Exemption

The £1,000 limit can be confusing because it sounds automatic, but it is not. HMRC can authorise certain deemed contractors not to apply CIS to small construction contracts where the value of the work is below £1,000, excluding materials. You must get HMRC approval first; without it, the normal CIS rules apply. 

This rule is mainly for deemed contractors, meaning businesses brought into CIS because of their level of construction spending rather than because construction is their main business. It does not provide a general exemption for all contractors or every small construction job.

CIS & Work Carried Out Outside the UK 

CIS only applies to construction work carried out in the UK. If the work is done entirely overseas, the payments are outside the scheme. 

The important point is that CIS follows the location of the work, not where the business is based. A company based abroad can still fall under CIS if it carries out construction work in the UK, while a UK business working entirely overseas may be outside CIS for that project. 

One common mistake is assuming offshore work is automatically outside CIS. UK territorial waters up to 12 miles from the coast are treated as part of the UK, so construction work in those areas can still fall within CIS. 

Other CIS Exemption Points Worth Knowing 

Not every business that pays for construction work automatically falls under CIS. A business that is not a construction company only becomes a deemed contractor if its construction spending exceeds HMRC’s threshold over the relevant period. Below that limit, CIS contractor obligations generally do not apply. 

It is also important to understand what HMRC classes as a construction operation. Some activities, such as professional design services, manufacturing materials, or delivering materials only, fall outside CIS. Knowing the difference can prevent unnecessary CIS registrations, deductions, and compliance issues.

What Is the Difference Between CIS Exemption & Gross Payment Status? 

This is the point that causes the most confusion. If work is outside CIS, the scheme simply does not apply. Gross Payment Status (GPS) is different — the work is covered by CIS, but HMRC has approved the subcontractor to receive payments without deductions.

What Happens If You Wrongly Assume You Are Outside CIS? 

This is where mistakes can become expensive. If a contractor treats a payment as outside CIS, makes no deduction, and HMRC later decides CIS should have applied, the contractor can still be liable for the tax that should have been deducted. 

The problem is that the contractor may have to pay HMRC money they never took from the subcontractor. Late returns, incorrect reporting, and failure to follow CIS rules can also lead to CIS penalties, especially where HMRC believes reasonable care was not taken. 

In some cases, HMRC may consider the circumstances and reduce a liability, particularly where genuine care was taken or the tax has already been accounted for elsewhere. However, relying on this after the mistake has happened is not a safe approach. 

The best approach is to confirm whether CIS applies before making payment. If there is any uncertainty, get the position reviewed early and keep clear evidence of the decision.

Frequently Asked Questions 

Conclusion 

The key point is simple: there is no CIS exemption certificate, and being outside CIS is not the same as having Gross Payment Status. CIS only applies to qualifying construction work, while certain activities, locations, and approved small contract arrangements may fall outside the scheme. 

Getting CIS treatment wrong can be costly, with contractors potentially liable for missed deductions and penalties. If unsure, confirm the CIS position before paying. This article is for general information only and does not constitute tax advice. Seek professional advice based on your circumstances. 

This article is for general information only and does not constitute tax advice. Your circumstances may alter the outcome. Speak to a qualified adviser before acting.