As explained here, the construction industry scheme ("CIS") was introduced to prevent perceived tax evasion in the construction industry. It is a type of withholding at source, like pay-as-you-earn, whereby parties who make payments for construction services (contractors) may be required to deduct income tax from payments to those who perform the services (sub-contractors). The CIS only applies to labour costs; no deduction is required in relation to payments for building materials.
From Monday 2nd March 2026 we will have moved offices. Our new address is 3 Stonecutter Street, London, EC4A 4AW.