What Is My National Insurance Number? How To Find Or Check National Insurance Number In UK

What is my National Insurance Number?

How do I find or check my National Insurance Number?

If you are looking for answers to any of these questions online, here is a complete guide for you. In this article, you will learn how to check or find your NINO online in UK.

What Is My National Insurance Number?

The National Insurance Number (NINO) is a number used in the UK tax system for proper documentation. The unique number is also used to administer the National insurance or Social Security Number (SSN).

Your NINO ensures that your tax and other contributions you make are recorded on your name only. Your national insurance contributions are paid into an account where some state benefits are also paid.


These state benefits include:

  • State Pension
  • Stationary Sick Pay
  • Maternity Leave
  • Unemployment Benefits etc.

How To Check Your National Insurance Number (NINO) Online

There are a lot of reasons why you might want to check your national insurance number. Some of these reasons may include:

  • To see what you’ve paid, up to the beginning of the current tax year.
  • To see any incoming national insurance credit.
  • To see if there are gaps in your contributions or credits, meaning some years do not count towards your State Pension.
  • To see if you can pay voluntary contributions to fill the gaps in your contributions (if any) and how much this will cost.

To check your national insurance number, you need to log on to https://www.gov.uk/check-national-insurance-record to get started. However, before you can login you need a Government Gateway user ID and password. You can easily create a new user ID and password if you don’t have one.

It is important to note that once you sign in to the ‘check your national insurance record’ service, you activate your personal tax account automatically. You can also use this to check your “Her Majesty’s Revenue and Customs” records and manage your details.

If you’ve paid national insurance in the Isle Of Man, your record will not show National Insurance contributions if you’ve reached State Pension age after 5th of April 2016.


However, you can email the national insurance in the Isle Of Man at nationalinsurance.itd@gov.im to find out how much you’ve paid.

You can also check your NINO online or with your phone by requesting for a printed national insurance statement or write to HMRC to check.

How To Find Your Lost National Insurance Number (NINO) Online

If you have misplaced your NINO, the fastest way to find it is through your personal tax account online. You can also go through some of your personal documents, such as your Payslip or P60.

If you have a personal tax account you’re on a safer side, you can sign in to “view your national insurance number” via https://www.tax.service.gov.uk/gg/sign-in?continue=/personal-account/national-insurance-summary/print-letter.

If you do not have a personal tax account, do not panic. You can easily create one using the website at https://www.gov.uk/personal-tax-account/sign-in/create-account.


You can also fill in the CA5403 form and send it to the address on the form or contact the NINO Helplines at 0300 200 3500 or 0300 200 3519. You’ll be required to answer some few questions.


You can easily check or find your lost national insurance number online, or contact HMRC and answer some few questions. It is important to note that HMRC will not disclose it to you over the phone rather they’ll mail to you.

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