Apply for a National Insurance number
You need to apply by phone for a National Insurance number.
National Insurance number application line
Telephone: 0345 600 0643
Textphone: 0345 600 0644
Monday to Friday, 8am to 6pm
Welsh language: 0345 602 1491
Monday to Friday, 8:30am to 5pm
Find out about call charges
To apply for benefits without a National Insurance number, contact Jobcentre Plus instead.
If you’re moving to the UK
You may have a National Insurance (NI) number printed on the back of your biometric residence permit (BRP). You don’t need to apply for a National Insurance number if you already have one, or one is printed on your BRP.
If you don’t have a National Insurance number, you must apply. You can only apply for it once you’re in the UK. You must have the right to work or study in the UK to get a National Insurance number.
If you’ve lost your National Insurance number
If you already have a National Insurance number and you’ve lost it, you might be able to find it on payslips, your P60, or letters about tax, pensions and benefits. If you have a personal tax account you can also view it there.
If you still can’t find it, fill in form CA5403 or call the National Insurance numbers helpline.
Working without a National Insurance number
You can start work before your National Insurance number arrives if you can prove you can work in the UK. You should tell your employer that you’ve applied for one, and give it to them when you have it.
National Insurance number interview
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, eg:
passport or identity card
birth or adoption certificate
marriage or civil partnership certificate
You’ll be told at the interview how long it’ll take to receive your National Insurance number.
If you turned 16 and didn’t get a number
You should be sent a National Insurance number automatically just before your 16th birthday if you live in the UK.
Call the National Insurance numbers helpline if you didn’t get one and you’re under 20.
If you’re over 20 and haven’t been sent one, call the Jobcentre Plus application line.
Last updated: 17 August 2016
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