HM Revenue & Customs

National Insurance Number

Your National Insurance number is a 9 digit reference made up of letters and numbers in the format QQ123456A. Please enter the reference with no spaces.

You'll find your National Insurance number on the PAYE Coding Notice that we sent you.

If you are an employee, you can find your National Insurance number on your P45, P60, on most correspondence from HM Revenue & Customs, or usually on your payslip.