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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 sub-contractor 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.
Use this postal address for general enquiries about CIS.
HM Revenue and CustomsCustom House Carnbane Way Newry BT35 6QG United Kingdom
If you disagree with a penalty charged by HMRC you must appeal in writing to this address.