National Insurance numbers

Online

Get your National Insurance number

If you need a letter confirming your National Insurance number you can:

  • log in to your Personal Tax Account to print a copy - do this if you’ve already set up your Personal Tax Account
  • set up your Personal Tax Account to log in and print a copy - do this if you know your National Insurance number
  • fill in the online form and post it to us - do this if you haven’t set up your Personal Tax Account and don’t know your National Insurance number

You can also find your National Insurance number on your payslip, P60, tax returns or official letters about tax, pensions or benefits.

Webchat

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Phone

Call to get advice if:

  • you’re between 15 years and 9 months and 20 years old and haven’t received a National Insurance number
  • you’ve lost or can’t remember your National Insurance number
  • you need a letter confirming your National Insurance number

HMRC won’t tell you your National Insurance number over the phone. They’ll post it to you and it’ll arrive within 10 working days.

Apply for a National Insurance number if you’re over 20 years old and haven’t got one.

Telephone:
0300 200 3500

Textphone:
0300 200 3519

Outside UK:
+44 191 203 7010

Opening times:

8am to 8pm, Monday to Friday
8am to 4pm, Saturday

Closed Sundays and bank holidays

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