Apply to pay voluntary Class 3 National Insurance contributions
Paying Class 3 contributions can close gaps in your National Insurance record which could benefit you, find out when you should make them and how to pay using form CA5603.
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Details
Use form C5603 to apply to pay voluntary Class 3 National Insurance contributions.
Paying voluntary contributions can close gaps in your National Insurance record but there are time limits for doing this. The form explains:
- how paying could help you
- when you should not make payments
- who can make payments
- time limits
- how to pay
- how to apply for a refund
It will also help you find out:
- how many qualifying years you have for your State Pension
- if paying will increase the amount you’ll get
Please send the completed form to:
National Insurance Contributions and Employer Office
HM Revenue and Customs
BX9 1AN
Last updated 26 September 2018 + show all updates
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The option to pay by quarterly bill has been added to the form.
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English and Welsh versions of the form have been updated with new contact details for the Future Pension Centre, information about voluntary contributions and revised payment methods.
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Rates, allowances and duties have been updated for the tax year 2017 to 2018.
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Rates, allowances and duties have been updated for the tax year 2016 to 2017.
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Amendments to PDF to ensure factual accuracy and to reflect legislative change.
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Rates, allowances and duties have been updated for the tax year 2015 to 2016.
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Added translation