Read the latest magazine Industry News Will Changes to the CIS Affect You? 30 July 2021 Changes to the Construction Industry Scheme (CIS) came into force at the start of the tax year in April. David Redfern, tax preparation specialist and director of DSR Tax Refunds Ltd, explains the CIS changes and how they could affect contractors and subcontractors who operate within the scheme. THE GOVERNMENT announced a consultation into suspected abuse of the Construction Industry Scheme in the Spring Budget of 2020. As a result of the consultation, four changes to the CIS were published under the measure entitled “Changes to tackle Construction Industry Abuse”. These came into effect on 6h April 2021. David Redfern explains, “The very nature of the construction industry means that it has long been subject to concerns that those within the industry are able to avoid some of their tax liabilities – indeed, the Construction Industry Scheme was introduced as a result of those fears. “These new measures close a few of the existing loopholes to ensure full compliance by scheme members and as a result, should not have too much impact on workers if they are already working towards being HMRC compliant”. The four measures relate to Construction Industry Scheme set-off amendment powers; cost of materials; deemed contractors and CIS registration penalties. CIS Set-Off Amendment Powers and Cost of Materials Changes to Construction Industry Scheme set-off amendment powers and the cost of materials measures are the changes most likely to impact on CIS subcontractors. The first change allows HMRC to make real time changes to a subcontractor’s CIS deductions while the second change ensures that only materials which have been purchased directly by a contractor are allowed as a legitimate expense. Redfern stated, “Subcontractors must ensure that they have directly incurred the cost of the materials which they are claiming as an allowable expense – this is, of course, something that should always have been the case with allowable expenses only being legitimate for expenses which have been wholly and exclusively incurred in the line of employment and this new measure just makes that explicit. “As for amending a subcontractor’s CIS deductions in real-time – this should have little impact where subcontractors and their contractors have been sticking to the intention of the rules. Whilst the changes will help to prevent errors or omissions in real-time CIS reporting, HMRC can also use the rule to prevent employers from abusing the CIS to make erroneous claims”. The CIS set-off amendment power also enables HMRC to prevent certain employers from making similar erroneous claims. Deemed Contractors and CIS Registration Penalties The changes relating to deemed contractors and CIS registration penalties have less potential impact on subcontractors, aimed at preventing abuse by contractors. With regard to deemed contractors, this measure amends the rules for determining which organisations operating outside the construction sector need to operate the CIS. Redfern explained, “Organisations which commence large construction projects can be deemed to be contractors under the CIS if their construction expenditure exceeds a certain amount in any given tax year, currently set at £3 million – this change will require such companies and organisations to check their construction expenditure more frequently, in real time, rather than accounting at the end of the year. “As for the CIS registration penalties, these measures toughen up enforcement against those who make false statements with regard to applying for gross payment status or payment under deduction, whether they are themselves making the false statement or enabling others to do so and thus, only impact on those within the scheme who are aiming to abuse the CIS rules”. This change also means that individuals and companies could now be liable to a penalty if they are in a position to exercise influence or control over the person making the application. The new measures came into effect on 6 April 2021 and will affect CIS subcontractors’ 2021-22 Self Assessment tax returns. >> Read more tax guidance in the news Previous article New Recommendations for SuDS in EnglandNext article Builders’ Workloads Rise as Material Availability Falls Share article You may also like View all News Industry News +2 20 March 2026 RA Issues Revised Safety Guidance on Rooflight Covers Awards and Events +3 20 March 2026 The Great British Slate Off Returns for 2026 Green Roofs +3 20 March 2026 Swansea Joins Global Network of Biophilic Cities Featured Solutions +3 19 March 2026 Flush Fitting Rooflights by Clement Sign Up to Roofing Today Stay up to date with all of the latest news from Roofing Today by signing up to our weekly Bulletins… Sign Up Today Get in Touch Check out the latest issue 123 March-April 2026 View Now Past Issues Get in Touch