Self Assessment: general enquiries

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Online forms

If HMRC needs to contact you about anything confidential they’ll reply by phone or post.

Online help and support

You can also watch videos and join webinars for help with Self Assessment.

Twitter

You can use Twitter to get general help from HMRC. We can’t discuss specific cases or an individual’s tax affairs, so please don’t give any personal details.

Start your tweet with @HMRCcustomers

Opening times:

8am and 8pm, Monday to Friday
8am and 4pm Saturdays
Closed Sundays

Webchat

Webchat is unavailable at the moment because of technical problems.

Phone

  • Telephone: 0300 200 3310
  • Textphone: 0300 200 3319
  • Outside UK: +44 161 931 9070

Call HMRC for advice on Self Assessment.

If you have a National Insurance number and Self Assessment Unique Taxpayer Reference (UTR) have them with you when you phone.

Find out about call charges

Opening times:

8am to 8pm, Monday to Friday
8am to 4pm Saturday
9am to 5pm Sunday

Closed Christmas Day, Boxing Day and New Year’s Day.

Contact Self Assessment: online services for problems filing your tax return online or if you’ve lost your online service user name or password.

Post

Write to HMRC at this address with all Self Assessment queries except complaints.

You don’t need to include a street name, city name or PO box when writing to this address.

Couriers should use a different address.

Self Assessment
HM Revenue and Customs
BX9 1AS
United Kingdom

Help us improve GOV.UK

Don’t include personal or financial information like your National Insurance number or credit card details.