Form

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.

• From: HM Revenue & Customs
• Published: 4 April 2014
• Last updated: 26 September 2018
  Show all updates

  1. 26 September 2018

     The option to pay by quarterly bill has been added to the form.

  2. 14 June 2018

     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.

  3. 31 March 2017

     Rates, allowances and duties have been updated for the tax year 2017 to 2018.

  4. 6 April 2016

     Rates, allowances and duties have been updated for the tax year 2016 to 2017.

  5. 27 April 2015

     Amendments to PDF to ensure factual accuracy and to reflect legislative change.

  6. 6 April 2015

     Rates, allowances and duties have been updated for the tax year 2015 to 2016.

  7. 4 April 2014

     Added translation

Documents

Apply to pay voluntary Class 3 National Insurance contributions

Ref: CA5603

PDF, 366 KB, 4 pages

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Details

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