Why It's Important to Update Your NI Records
Your National Insurance number stays the same for life, but it’s linked to your personal details. If your name changes due to marriage, divorce, or personal choice, you must inform HMRC to keep your contributions, tax records, and benefit entitlements in order.
How to Update Your Name for National Insurance
1. Update Online Through Your Personal Tax Account
- Sign in with your Government Gateway ID.
- Use the “Report a change of name or address” option to update your details.
2. Update Using the HMRC App
- Log in and follow the same “change of details” process as the online account.
3. Update by Phone
- Call HMRC on 0300 200 3300.
- Have your NI number and supporting documents ready.
4. Update by Post
Send your request and supporting documents to:
National Insurance Contributions and Employers Office
HMRC
BX9 1AN
United Kingdom
Include:
- NI number
- Old and new name
- Reason for change
HMRC will return any original documents once your records are updated.
Documents You May Need
- Marriage certificate
- Decree absolute (divorce certificate)
- Deed poll or statutory declaration
- Passport or driving licence for identity confirmation
After Your Name Has Been Updated
Once HMRC confirms your name change:
- Notify your employer so payroll matches your new details.
- Check your tax code and NI contributions are correct.
- Ensure your State Pension and benefits records are accurate.
FAQs
Changing Name for National Insurance
Yes, via your HMRC Personal Tax Account or the HMRC app.
Postal updates can take several weeks. Online or phone updates are often faster
Yes, once HMRC updates your records, inform your employer to ensure payroll matches.
No. Your NI number stays the same — only your personal details are updated.
