HM Revenue & Customs

National Insurance number

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

You can find your National Insurance number on your payslip, P60, or letters about tax, pensions and benefits. You can also find it through your personal tax account and download a confirmation letter. You will also find it on most correspondence from HM Revenue & Customs.

If you do not have a National Insurance number, you only need to apply for one if you're planning to:

If you do not need to apply for a National Insurance number, please leave the National Insurance number field blank and confirm in the Reasons box that none of the criteria apply to you.