Pay voluntary Class 3 National Insurance
Send a cheque through the post
You can pay by sending a cheque to:
HM Revenue and Customs
National Insurance Contributions and Employer Office
BX5 5BD
Allow 3 working days for your payment to reach HMRC.
What to include
HMRC’s payment request to you will include a payslip with an 18-digit reference number on it. Send the payslip along with your cheque.
Write your 18-digit reference number on the back of the cheque.
Do not fold the payslip or cheque, or fasten them together.
If you want a receipt, include a note asking for one.
If you do not have an HMRC payslip
Include a note with:
- your name, address and phone number
- how much you’re paying
- the period you’re paying for
- your 18-digit reference number or National Insurance number
If you do not have an 18-digit reference number, you can:
- ask HMRC online
- phone the National Insurance enquiries line if you cannot ask HMRC online