Register for your Online Account for the first time
To set up your online account, please complete all details below and click Next. Mandatory fields are marked with an asterisk*
If you live outside the UK, please try your international postcode equivalent first. If this doesn't match, then try your country of residence; and if this doesn't match, try leaving the postcode field blank.
Your NI (National Insurance) number is a 9 digit reference number which never changes – it’s made up of 2 letters, 6 numbers and a final letter, which is always A,B C, or D.
So it’ll be in this format AB 12 34 56 A.
You’ll find it on your payslip/P60, or by contacting your local tax office.
Visit the government’s website to find out more about your NI number.