Personal tax – form

National Insurance: sending employees to work abroad (CA3821)

Use the online service or the postal form to tell HM Revenue and Customs (HMRC) that you're sending employees to work in the European Economic Area (EEA) or in a country with a reciprocal agreement with the UK for National Insurance purposes.

Documents

Detail

To tell HMRC that you’re an employer sending your employees to work abroad in a country within the EEA or one that has a reciprocal agreement with the UK for National Insurance contributions purposes:

  • use this online service if your company has been trading in the UK for more than 18 months (you’ll need to log in to your tax account)
  • fill in the form on-screen, print it off and post it to HMRC if your company has been trading in the UK for less than 18 months (this is because they need you to send additional evidence with the form)

Before you start

You’ll need to fill in the postal form fully before you can print it. You can’t save a partly completed form so you should gather all your information together before you start to fill it in.

If you’re using an older browser, eg Internet Explorer 8, you’ll need to update it or use a different browser. Find out more about browsers.

Find out more about paying employees working abroad.

Social Security abroad (NI38)
Find out about paying National Insurance contributions to the UK and getting benefits when abroad.

National Insurance if you go abroad
Find out if you need to pay National Insurance when you work abroad.