8 articles

CIS Advanced

Practical guides on cis advanced for UK construction subcontractors and contractors.

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CIS Advanced
The Collapse in UK Construction Net Company Formation, 2016 to 2025
Net formation across UK construction, new companies incorporated minus companies dissolved in the same calendar year, fell 95.6% between 2016 and 2025, from +30,361 to just +1,341 companies a year across the 19 construction SIC codes tracked by Companies House. The cause is not a slowdown in new companies starting up: incorporations actually rose over the decade, from 53,567 to 67,839. The cause is dissolutions, which nearly tripled, from 23,206 to 66,498, and in 2025 came close to matching the number of new firms outright. For the first time on record, construction of domestic buildings (SIC 41202) went net negative in 2025, meaning more housebuilding companies closed than opened. Partial 2026 data shows a tentative rebound, but it is four months of provisional figures, not a confirmed reversal. This article sets out what the data shows, why dissolutions rather than fewer start-ups are driving the collapse, and what it means for CIS subcontractors and contractors assessing counterparty risk and their own incorporation decisions.
23 July 20267 min read
CIS Advanced
Why UK Construction Company Formations Spike Every March
Analysis of Companies House registration data for 2016 to 2025 shows that March is consistently the busiest month for new UK construction company formations, running roughly 14.7% above the monthly mean. The driver is not coincidence but a structural response to the UK tax calendar: sole traders who have decided to incorporate rush to form their company in March so it begins trading from 6 April, the first day of the new tax year, giving them the cleanest possible accounting start date and avoiding a broken sole-trader year that is neither one thing nor the other.
20 July 20269 min read
CIS Advanced
CIS for Housebuilders: Managing Multiple Subcontractors and April 2026 Obligations
Housebuilders sit at the complex end of CIS compliance. They may be mainstream contractors, deemed contractors, or both simultaneously, depending on their activity. They routinely pay 20 to 50 subcontractors each month, face the reinstated nil-return obligation from April 2026, and must now meet a stricter GPS anti-fraud due-diligence standard before each payment. This guide covers the full compliance picture for residential housebuilders in 2026/27.
12 June 20268 min read
CIS Advanced
CIS for Labour Agencies: When Your Agency Is a CIS Subcontractor
A labour agency that supplies workers for construction operations is not always invisible to the Construction Industry Scheme. In many cases the agency itself is treated as the CIS subcontractor, not the individual workers it provides. This creates a set of obligations, and risks, that differ entirely from standard employer-payroll duties. This guide explains when the agency subcontractor rule applies, when it does not, and what agencies must do to stay compliant.
12 June 20268 min read
CIS Advanced
CIS for Property Developers: Deemed Contractor Rules Explained
Most property developers know about CIS in theory. Fewer understand exactly when it applies to them. A developer building for sale who directly employs subcontractors is a mainstream contractor from the first payment. One that commissions substantial construction work crosses into CIS as a deemed contractor once its rolling 12-month spend reaches £3 million. The distinction between developer-as-investor and developer-as-builder matters, as does the interaction between the CIS rules and VAT zero-rating on new-build homes. This guide covers all of it for 2026/27.
12 June 20268 min read
CIS Advanced
How CIS Limited Companies Reclaim Deductions in Real Time
A limited company that suffers CIS deductions does not have to wait until after the tax year to get that money back. It can offset the deductions against its PAYE and NIC liabilities every single month using the Employer Payment Summary. This guide walks through the mechanics, the deadlines, what happens to any excess credit, and the record-keeping HMRC requires.
12 June 202611 min read
CIS Advanced
CIS and Plant Hire: With Operator vs Without Operator Explained
Whether CIS applies to a plant hire payment turns on a single question: does the hire include an operator? Plant hired with an operator is treated as a labour supply, which means CIS applies to the full payment including the hire charge. Plant hired without an operator (dry hire) is a supply of equipment, which falls outside CIS. Getting this wrong in either direction creates incorrect deductions, disputed invoices, and compliance risk on the CIS300 return. This guide explains the distinction, how to read an invoice to establish which rule applies, the mixed-use scenario, and how passing hire costs through a subcontractor chain affects the deduction base.
12 June 20267 min read
CIS Advanced
CITB Levy Explained: Rates, Threshold, Grants and Exemptions 2026/27
The Construction Industry Training Board (CITB) levy is a statutory charge on construction employers in Great Britain, separate from CIS but closely linked to it. If your construction-work turnover crosses the levy threshold, you must register with CITB, submit an annual levy return, and pay a levy calculated on your PAYE payroll and your payments to labour-only CIS subcontractors. This guide explains who pays, the current rates, the small-business exemption, the grants you can claim back, and how the levy interacts with CIS.
12 June 20267 min read

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