Email HMRC for help with IR35 enquiries.
HMRC will only email you with confidential information if you’ve given them your written agreement they can do so.
Call HMRC for help with IR35 enquiries.
0300 123 2326
03000 533 124
Monday to Friday: 8:30am to 4:30pm
Closed weekends and bank holidays.
Write to HMRC for help with IR35 enquiries.
HM Revenue and Customs
IR35 Customer Service Unit
Newcastle Upon Tyne