Your National Insurance (NI) number is a unique identifier used by HMRC to track your tax and contributions. If you’ve misplaced it, don’t worry—you can find it online through a few simple steps.
1. Check Your Documents
Before going online, check if your NI number is listed on any of the following:
- Your payslip
- P60 or P45
- HMRC letters about tax, pensions, or benefits
- Personal tax account correspondence
2. Use Your Personal Tax Account
If you can’t find your National Insurance number in your documents, you can access it online through your Personal Tax Account. Here’s how:
- Visit the Government Gateway website
- Sign in or register using your Government Gateway user ID and password
- After logging in, go to the ‘National Insurance’ section
- Your NI number will be displayed
3. Use the HMRC App
Alternatively, you can check your National Insurance number online using the HMRC app:
- Download the HMRC app on iOS or Android
- Log in with your Government Gateway details
- Navigate to your NI information
4. Request Your NI Number by Post
If you cannot access your Personal Tax Account, you can request HMRC to send your NI number by post:
- Fill out the CA5403 form (available on GOV.UK)
- Submit the form online or via post
Final Thoughts
Finding your national insurance number online is quick and straightforward through your Personal Tax Account or the HMRC app. If you still need help, contact HMRC’s National Insurance helpline for further assistance. Need more tax-related guidance? Stay tuned for more helpful tips!