What is my National Insurance Number and why is it important?

The National Insurance Number (NINo.) is your personal reference number to make sure your National Insurance contributions and tax are recorded against your name only. It is made up of letters and numbers, is unique to you and will never change.

You must not share your NINo. with anyone who does not need it as knowledge of your number might help someone steal your identity. You will need your NINo. at certain times throughout your life, for example, if you apply for a student loan, start working or claim state benefits.

You must give your NINo. to every employer you work for right away. You must make sure you give the right number every time so you pay the correct amount of tax and National Insurance contributions.

How to apply for a National Insurance Number (NINo.)?

Application for the NINo. is by phone. Here’s how to contact them.

Telephone: 0800 141 2075

Text/phone: 0800 141 2438

Monday to Friday, 8am to 6pm

What is the National Insurance Number Interview about?

Jobcentre Plus may write to you and ask you to come to an interview where you’ll be asked about your circumstances and why you need a National Insurance number.

The letter will also tell you which documents to bring to prove your identity, such as:

  • passport or identity card
  • residence permit
  • birth or adoption certificate
  • marriage or civil partnership certificate
  • driving license

During the interview, you’ll be told how long it’ll take to receive your National Insurance number.

In the event that you change your address before you receive it, tell the Department for Work and Pensions by contacting the National Insurance number application line.

Telephone: 0800 141 2075

Text/phone: 0800 141 2438

Monday to Friday, 8am to 6pm



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