Use the online form to apply for a refund of Class 4 National Insurance contributions.
To apply for a refund of Class 4 National Insurance contributions you can:
If you use the online form, you’ll get a reference number that you can use to track the progress of your form.
If you’re using an older browser, for example Internet Explorer 8, you’ll need to update it or use a different browser. Find out more about browsers.
You’ll need to fill in the postal form fully before you can print and post it. You can’t save a partly filled in form so you should gather all your information together before you start to fill it in.
Don’t include personal or financial information like your National Insurance number or credit card details.