Pay voluntary Class 3 National Insurance

By cheque through the post

Send a cheque and your HM Revenue and Customs (HMRC) payslip. You’ll find the payslip on the bill HMRC sent to you.

Where to send

Make your cheque payable to ‘HM Revenue and Customs only’ followed by your Class 3 National Insurance reference number (shown on your payslip).

Do not fold your payslip or cheque or fasten them together.

Send your payment to:

HM Revenue and Customs
National Insurance Contributions and Employer Office
BX9 1AN

Allow 3 working days for the payment to reach HMRC.

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
  • your Class 3 National Insurance contributions reference number (or National Insurance number)
  • how much you’re paying
  • the period you’re paying for