Get your National Insurance number
Published 9 April 2014
Last updated 21 January 2019 + show all updates
- Form CA5403 has been updated with details about which documents you may need to send to confirm your identity to HMRC if you're unable to register for a personal tax account.
- Guidance updated as you can now use your personal tax account to view or download, print, save or share a letter with your National Insurance number on.
- Updated form CA5403 to provide HMRC with enough information to confirm a NINO.
- An online service is now available.
- Amended postal address to: National Insurance Contributions and Employer Office, HM Revenue and Customs, BX9 1AN.
- Added translation
