Print a letter showing your National Insurance number from your personal tax account, or apply by post.
Use your personal tax account to print your National Insurance number letter. You’ll need to sign in to, or set up a Government Gateway account.
Fill in the on-screen form, then print and post it to HM Revenue and Customs.
Send the print and post form to:
National Insurance contributions and Employers Office
HM Revenue and Customs
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You’ll need to fill in the form fully before you can print it. You can’t save a partly completed form so gather all your information together before you start to fill it in.
Apply for a National Insurance number
Guidance on how to get a National Insurance number.
Don’t include personal or financial information like your National Insurance number or credit card details.