Taxes Helpline for Self-Employed

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Tax and National Insurance for the self-employed
Find out how to register with HMRC when you start a business, basic information on Self-Assessment, National Insurance, VAT and record keeping
File your tax return online
Save time and get your tax calculation automatically when you file your tax return online

Telephone

Taxes Helpline

Opening hours
8.00 am to 8.00 pm, Monday to Friday
8.00 am to 4.00 pm Saturday
0845 300 0627
For customers who are deaf or hearing or speech impaired:
0845 302 1408 (Textphone)
A textphone allows you to type what you want to say rather than speaking into a mouthpiece. You can use a textphone instead of a voice telephone if you are deaf or have problems with your speech. It is not possible to speak to an adviser by phoning a textphone number.
If you're calling from abroad please telephone:
+44 135 535 9022

Post

You can write to HMRC by using the postal address on the most recent correspondence from us.

If you don't have recent correspondence from us then write to:

HM Revenue & Customs
Self Assessment
PO Box 4000
Cardiff
CF14 8HR