Hi,
If you intend to make a payment after the deadlines shown on your INSL33 letter please contact the National Insurance department.
Call national Insurance on 0300 200 3500 from the UK or +44 191 203 7010 from outside the UK
You can use the webchat function ‘
ask HMRC online’
You can submit a new CF83 to receive an up to date INSL33 letter detailing the new payment dates and tax year values
You can also write in to:
PT Operations North East England
HM Revenue and Customs
BX9 1AN
When submitting your correspondence, kindly provide your National Insurance Number, full name, current address, a contact telephone number, and a brief explanation of the purpose of your letter. Additionally, please remember to sign and date the document, even if it is printed.