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- Telephone: 0300 200 3210
- Textphone: 0300 200 3219
- Outside UK: +44 161 930 8706
8am to 8pm, Monday to Friday
8am to 4pm Saturday
Closed Sundays, Christmas Day, Boxing Day and New Year’s Day
If you are phoning to register as a subcontractor you’ll need your Unique Taxpayer Reference (UTR) when you call. If you don’t have a UTR register for Self Assessment to get one.
If you’re a company secretary you can register a company as a subcontractor under the Construction Industry Scheme using form CIS305.
Use this postal address for general enquiries about CIS or to appeal against a CIS penalty charged by HMRC.