How to Find My National Insurance Number in the UK (2026)

Need it for a new job or tax? Here is how to find my National Insurance number in the UK in a few minutes.

How to Find My National Insurance Number: Where to Look

1. HMRC app – sign in and open your National Insurance number section. You can save or share it.
2. Your personal tax account on GOV.UK – sign in to view your NI number.
3. Payslips from your employer.
4. P60 end-of-year tax certificate.
5. Letters from HMRC or DWP about tax, pensions or benefits.

Your NI Number Format

A National Insurance number looks like QQ 12 34 56 A – two letters, six numbers and one final letter.

If You Still Cannot Find It

You can ask HMRC to send it by post using the form on GOV.UK. It is sent to the address HMRC has on record.

If You Have Never Had One

If you live in the UK and have the right to work, you can apply for a National Insurance number through GOV.UK. You can usually start work before it arrives if you can prove your right to work.

Keep It Safe

• Only share your NI number with your employer, HMRC, DWP and trusted organisations.
• HMRC will never ask for it by unexpected text or social media.

Final Thoughts

The fastest way to find your National Insurance number is the HMRC app. Save it in a secure place so you always have it when needed.