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Wednesday, 3 October 2023

Self Assessment and your tax return

Contact details for help and advice with completing your tax return and for general advice about Self Assessment.

Self Assessment Helpline

  • Contact point
    Self Assessment and your tax return
  • Address
    You can write to HM Revenue & Customs by using the postal address on recent correspondence from them.

    If you don't have any recent correspondence write to:

    HM Revenue & Customs
    Self Assessment
    PO Box 4000
    CF14 8HR
  • Phone number
    0845 900 0444
  • Website (opens new window)
  • Opening Hours
    Monday to Friday 8.00 am to 8.00 pm.
    Saturday 8.00 am to 4.00 pm.
    Closed Sundays, Christmas Day, Boxing Day and New Year's Day

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