The Construction Industry Scheme (CIS) is a tax deduction scheme in the UK that involves tax being deducted at source from payments relating to construction work. The CIS tax deductions are calculated based on labour and material costs. Here's a step-by-step guide on how to calculate CIS tax deductions.Understanding Different CIS Tax Rates in the UKThe Construction Industry Scheme (CIS) in the UK has three different tax rates applicable to subcontractors. These rates are 30%, 20%, and 0%. The ra