This information applies to England, Wales, Scotland and Northern Ireland
You can find information about Self Assessment on the GOV.UK website at: www.gov.uk and on the Low Incomes Tax Reform Group (LITRG) website at www.litrg.org.uk. More information about Self Assessment tax returns is on the TaxAid website at http://taxaid.org.uk.
For general enquiries about Self Assessment, telephone HMRC on the Self Assessment Helpline, 0300 200 3310 (Textphone 0300 200 3319).
Calls usually cost up to 40p a minute from mobiles and up to 10p a minute from landlines. It should be free from your mobile if you have a contract that includes calls to landlines - check with your supplier if you’re not sure.