National Insurance: general enquiries

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Online forms

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


  • Telephone: 0300 200 3500
  • Textphone: 0300 200 3519
  • Outside UK: + 44 191 203 7010

Call for help and information about:

  • Class 1 National Insurance rates and thresholds
  • Statutory Payments
  • Married Women’s Reduced Rate Election
  • National Insurance statement requests
  • Class 3 National Insurance

If you have a National Insurance number, have it with you when you call.

Phone the National Insurance numbers helpline if you haven’t received your National Insurance number or have lost or forgotten it.

HMRC cannot give you an estimate of your State Pension but you can get a State Pension statement.

Find out about call charges

Opening times:

8am to 5pm, Monday to Friday

Closed weekends and bank holidays

Best time to call:

Phone lines are less busy after 1pm


Write to HMRC at this address with all National Insurance 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.

National Insurance Contributions and Employer Office
HM Revenue and Customs
United Kingdom

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