National Insurance Contact Number UK - HMRC Helpline Guide 2026
Find the correct National Insurance contact number, speak to HMRC about your National Insurance contributions, recover a lost National Insurance number and understand how to resolve common National Insurance enquiries.
National Insurance is an important part of the UK's tax and social security system. Employees, self-employed individuals and some people receiving certain benefits may pay National Insurance contributions or receive National Insurance credits.
These contributions and credits can affect entitlement to the State Pension and certain other benefits.
If you need to contact HM Revenue and Customs (HMRC) about your National Insurance number, contribution record, missing payments or voluntary contributions, choosing the correct helpline can help you resolve your enquiry more efficiently.
For employees, self-employed professionals, landlords and property investors, understanding National Insurance obligations can also support financial planning and accurate record-keeping.
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This guide explains the main National Insurance contact numbers, how to contact HMRC from the UK or overseas, how to find your National Insurance number and what to do if your contribution record is incorrect.
What Is the National Insurance Contact Number?
The main HMRC National Insurance enquiries helpline is:
0300 200 3500
This number is used for many enquiries concerning National Insurance contributions and records.
However, HMRC operates separate contact routes for certain matters, including National Insurance number applications and State Pension forecasts.
It is important to identify the correct service before calling.
National Insurance Contact Numbers UK 2026
|
Enquiry |
Telephone number |
|---|---|
|
General National Insurance enquiries |
0300 200 3500 |
|
Calling HMRC from outside the UK |
+44 191 203 7010 |
|
National Insurance number applications (Great Britain) |
0800 141 2079 |
|
National Insurance number applications (Northern Ireland) |
0800 587 0024 |
|
Class 4 National Insurance enquiries |
0300 200 3310 |
|
National Insurance textphone |
0300 200 3519 |
|
Employer PAYE and National Insurance payment enquiries |
0300 200 3200 |
The general National Insurance helpline is open Monday to Friday, 8am–6pm UK time, excluding bank holidays. The application helplines have different opening hours.
What Can You Contact HMRC About?
HMRC's National Insurance helpline can assist with matters including contribution records, missing National Insurance credits, incorrect payments, refunds and employment histories.
It can also provide guidance concerning voluntary contributions and National Insurance obligations when working abroad.
How to Find a Lost National Insurance Number
If you have forgotten your National Insurance number, check your payslip, P60, HMRC app or personal tax account.
HMRC will not disclose your National Insurance number over the telephone. If you cannot retrieve it online, you can request confirmation by post, which may take up to 10 working days.
How to Apply for a National Insurance Number
If you have never had a National Insurance number, you can normally apply online through GOV.UK.
Applications require identity verification. Once your identity has been confirmed, receiving a National Insurance number can take up to four weeks.
How to Check Your National Insurance Contributions
You can use your personal tax account to check your contribution history and identify any gaps.
If you discover missing contributions, contact HMRC before paying voluntarily. Not every additional contribution will increase your State Pension entitlement.
How to Contact National Insurance by Post
For general written National Insurance enquiries, HMRC lists the following postal address:
PT Operations North East England
HM Revenue and Customs
BX9 1AN
United Kingdom
Frequently Asked Questions
What is the HMRC National Insurance telephone number?
The main contact number is 0300 200 3500.
Can I contact National Insurance from abroad?
Yes. Call +44 191 203 7010.
What time does the National Insurance helpline open?
The general helpline operates Monday to Friday, from 8am to 6pm UK time, excluding bank holidays.
Can HMRC tell me my National Insurance number over the phone?
No. You can retrieve it through your HMRC account or request written confirmation.
Is there a separate National Insurance application number?
Yes. In England, Scotland and Wales, the application helpline is 0800 141 2079.
