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
  • Class 2 and 3 National Insurance
  • Statutory Payments
  • Married Women’s Reduced Rate Election
  • National Insurance statement requests
  • employment histories
  • Parents and Carers credits
  • gaps in your National Insurance contributions

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

Call this number if you haven’t received your National Insurance number or have lost or forgotten it.

HMRC can’t 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 8pm, Monday to Friday
8am to 4pm, Saturday

Closed Sundays and bank holidays


Write to HMRC at this address with all National Insurance queries except complaints.

You don’t 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 like your National Insurance number or credit card details.