If your company has had Construction Industry Scheme (CIS) deductions taken from your income as subcontractors, you should set these off against your monthly or quarterly payments to HM Revenue and Customs (HMRC).
You can reduce your tax, National Insurance contributions or CIS payments by the amount of deductions.
Only companies can use this arrangement. It’s not available to individual subcontractors or partnerships.
Email HMRC to ask for this form in Welsh (Cymraeg).