If you are a contractor or subcontractor, you can contact HMRC about the Construction Industry Scheme (CIS) by phone or by post.
If you’re a contractor you’ll need your Unique Taxpayer Reference (UTR), accounts office reference or PAYE reference. If you’re a subcontractor you’ll need your UTR or National Insurance number.
HMRC Phone Number
The phone number for general enquiries is 0300 200 32101.
HMRC Address
The postal address for general enquiries or appeals is:
HM Revenue and Customs, BX9 1AU
You do not need to include a street name, city name or PO box when writing to this address