Check how to claim a National Insurance refund

Use this tool to check how to claim a refund on your National Insurance contributions from HM Revenue and Customs (HMRC).

This page is also available in Welsh (Cymraeg).

If you’ve already claimed a refund, check when you can expect a reply.

Find out how to claim

There are different classes of National Insurance. You’ll be asked what class your refund is for.

If HMRC has written to you about National Insurance contributions paid in error by your employer (and your letter includes a claim reference number), you can apply for a refund of National Insurance contributions.