Use the online service or postal form to apply to reduce your Self Assessment payments on account.
You can apply to reduce the amounts you’ve been asked to pay if:
You must claim by 31 January after the end of the tax year - for example by 31 January 2017 for the year 2015 to 2016.
Appeal a penalty using the online form or read guidance on how to appeal.
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.
Understand your Self Assessment tax bill
Details on when and why you have to make payments on account for Self Assessment.
Don’t include personal or financial information like your National Insurance number or credit card details.
To help us improve GOV.UK, we’d like to know more about your visit today. We’ll send you a link to a feedback form. It will take only 2 minutes to fill in. Don’t worry we won’t send you spam or share your email address with anyone.