ICAEW Chartered Accountants

The Construction Industry Scheme

How CIS works for contractors and subcontractors, and how to stay on the right side of HMRC.

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General information only, not advice for your circumstances. Please talk to us before acting.

Contractors

If you pay subcontractors for construction work, you must register as a contractor, verify each subcontractor with HMRC, deduct tax from the labour element of their payments and file a monthly return by the 19th.

Deduction rates

  • 20% for registered subcontractors
  • 30% for unregistered subcontractors
  • Nil for subcontractors with gross payment status

Subcontractors

Deductions count as advance payments towards your tax and National Insurance. Keep your payment and deduction statements: we use them to claim the credit in your return or your company’s payroll.

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