National Insurance Number

A National Insurance Number (NIN) is a unique identifier issued to individuals in the UK, used to record their National Insurance contributions and earnings for social security, pension, and tax purposes. It ensures that your payments are correctly tracked and associated with your personal record. The NIN stays with you throughout your life and is necessary for working legally, claiming benefits, or accessing state pension schemes. It typically consists of two letters, six numbers, and a final letter (e.g., AB123456C), and is issued by Her Majesty’s Revenue and Customs (HMRC).