Apply to pay voluntary Class 3 National Insurance contributions
Use form CA5603 to find out when you should make voluntary Class 3 National Insurance contribution payments, how to apply to make a payment and how to pay.
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Paying voluntary contributions can close gaps in your National Insurance record, however there are time limits on when you can make payments.
This 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
Updates to this page
Published 4 April 2014Last 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