In this section:
  • Email Online Services Helpdesk for technical help
  • You are here:
  • Home >
  • Contact Us >
  • Email Online Services Helpdesk for technical help

Email Online Services Helpdesk for technical help

You can email the Online Services Helpdesk (OSH) for technical help but they cannot reply to questions about taxes or tax returns. If your query is not related to online technical issues, please contact the relevant business area.

Lost User ID and password - Self Assessment customers

If you have activated your online account before, but have now lost both your User ID and password, you may be able to use the secure online 'Request a duplicate Self Assessment Online User ID' form.

You can only use this form if you:

  • have previously enrolled and activated your Self Assessment online account
  • have lost both your User ID and password
  • know your Unique Taxpayer Reference number (UTR)
  • know your National Insurance number
  • have told HMRC about any recent change of address

Do not use this form if you:

  • are not already signed up to use Self Assessment online service - register as a new user
  • can't find the information you need to complete the form
  • have changed any of your details but not told HMRC - you need to tell your tax office about any changes and wait 72 hours before sending in the form
  • have already got the correct password - login to get your User ID
  • have a Partnership account - you need to phone OSH
  • are an agent - you need to phone OSH

Request a duplicate Self Assessment Online User ID

Contact Online Services Helpdesk (OSH)

Other technical help

If you log into Self Assessment Online Services, you can use 'Ask a question'. This lets you send personal or confidential information securely regarding your Self Assessment Online Services.

If you need general technical help about using online services, and it doesn't involve sending personal data, you can email HMRC using the links below. These emails are sent at your own risk. The information isn't secure as emails can be intercepted. HMRC will only reply to your enquiry by email if the reply doesn't include personal or confidential information, otherwise HMRC will ask you to telephone the Online Services Helpdesk.

If you have any doubt about the authenticity of an email that claims to be from HMRC, follow the link below:

HMRC Security Advice