Off-payroll working (IR35)

Phone

Call HMRC for:

  • help with enquiries about the off-payroll working rules
  • a full run-through of the Check Employment Status for Tax (CEST) tool

Telephone:
0300 123 2326

Fax:
03000 533 124

Opening times:

Monday to Friday: 8.30am to 4.30pm

Closed on Saturdays, Sundays and bank holidays.

You can also find out information in:

Webchat

Speak to an adviser online.

Use this service for help with straightforward enquires about the:

  • off-payroll working rules
  • questions in the Check Employment Status for Tax (CEST) tool

Find out about call charges

Post

Write to HMRC for help with enquiries about the off-payroll working rules.

HM Revenue and Customs
IR35 Customer Service Unit
S0733
Newcastle Upon Tyne
NE98 1ZZ
United Kingdom