Self Assessment: general enquiries


Register for and file your Self Assessment tax return

Get your SA302 tax calculation

Tell HMRC about a change to your personal details

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.


Speak to an adviser online about Self Assessment queries.

If your enquiry is about the Self-Employment Income Support Scheme contact Get help with the Self-Employment Income Support Scheme enquires.


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

Start your tweet with @HMRCcustomers

Twitter opening times:

Monday to Saturday: 8am to 8pm
Sunday: 9am to 5pm

Closed on bank holidays.


Call HMRC for advice on Self Assessment.

If you have a National Insurance number and Self Assessment Unique Taxpayer Reference have them with you.

Problems using the HMRC’s online service

Contact Self Assessment: online services:

  • for problems filing your tax return online
  • if you have lost your online service user name or password

When you call

This helpline uses speech recognition software, so you will be asked why you are calling HMRC. Try to answer with short phrases and words, for example:

  • ‘change my address’
  • ‘question about penalty’
  • ‘late tax return’

If you cannot use speech recognition software, find out how to deal with HMRC if you have additional needs.

0300 200 3310

0300 200 3319

Outside UK:
+44 161 931 9070

Opening times:

Monday to Friday: 8am to 6pm

Closed on weekends and bank holidays.

You can also find out information in:

HMRC may ask if you want to add voice identification to your account. You can find out more in the Voice Identification Privacy Notice.

Find out about call charges


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

You do not 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
United Kingdom