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I have lost my National Insurance number. What do I do?

You will normally be sent a National Insurance NI) number, which looks something like AB123456C, just before your 16th birthday.

If you have lost your NI number you should contact HM Revenue and Customs. You can either complete an online form available on the HMRC website or call the National Insurance Registrations helpline on 0845 915 7006 (lines are open 8.30am to 5pm, Monday to Friday).

Even if you are working part-time or earning a low wage – perhaps too low to pay NI contributions – you must still have an NI number to take a job.