HMRC National Insurance contact number
The National Insurance line handles your NI record, contribution gaps, and Class 1, 2 and 3 questions. Class 4 questions (self-employed profits) go through the Self Assessment number.
Checked against gov.uk on 7 September 2026
Class 1, 2 and 3 enquiriesLocal rate
Class 4 enquiries (via Self Assessment)Local rate
Other ways to call
Textphone: 0300 200 3519
From outside the UK: +44 191 203 7010
Have this ready before you call
- Your National Insurance number
- Your date of birth
- Details of the years you are asking about, if calling about gaps
Common questions
Can this line tell me about paying voluntary contributions?
Yes, for Class 3 voluntary contributions and filling gaps in your record. Check your State Pension forecast first so you know whether extra years would actually raise your pension.
Is the National Insurance line free?
It is a standard-rate 0300 number: the same cost as a normal landline call and included in most call allowances.