HMRC National Insurance contributions office helpline is now incorporated into the general enquiries:
0300 200 3500.
Office opening times are:
Monday to Saturday, 8.00am to 10.00pm
Sunday: 9.00am to 10.00pm
Closed Christmas Day, Boxing Day, New Year’s Day and Bank Holidays
The National Insurance Office main postal address is:
PT Operations North East England
HM Revenue and Customs
BX9 1AN
United Kingdom
National Insurance Deficiency Notice helpline:
0300 200 3500
Office opening times are:
Monday to Saturday, 8.00am to 10.00pm
Sunday: 9.00am to 10.00pm
Closed Christmas Day, Boxing Day, New Year’s Day and Bank Holidays
National Insurance Registrations helpline:
0800 141 2075
Office opening times are:
Monday to Saturday, 8.00am to 10.00pm
Sunday: 9.00am to 10.00pm
Closed Christmas Day, Boxing Day, New Year’s Day and Bank Holidays
National Insurance Tariff Classification Advice:
Email: classification.enquiries@hmrc.gov.uk
National Insurance Tariff Classification Advice Office Opening Hours
Office opening times are:
Monday to Saturday, 8.00am to 10.00pm
Sunday: 9.00am to 10.00pm
Closed Christmas Day, Boxing Day, New Year’s Day and Bank Holidays
For further Tax Contacts, please follow the links below:
Self Assessment includes:
Self Assessment Helpline & Orderline
Self Assessment Payment HelplinesSelf Employed includes:
Recently become Self Employed HMRC Helplines
Construction Industry Scheme (CIS) Helpline
Capital Gains Tax Helpline for Self Employed
National Insurance Self-Employed HelplineNational Insurance includes:
Deficiency, Registrations & Classifications HelplinesPension Schemes includes:
Contracted Out Pension Schemes
Online Services HelplinesMore Tax Phone Numbers includes:
HMRC Capital Gains Tax
HMRC IR35
HMRC Employers Helplines
New Employers Helplines
Excise & Customs Helplines
Corporation Tax Helplines
ISA & Savings Helplines
Tax Charities
More Info
For more information please see: