This Article covers the following topics:
How often do you need to complete a Self Assessment Tax return?
You should complete your Self Assessment Tax return annually.
How long do you have to amend a submitted return?
You have up until a year after the submission deadline. For example, if you are filing your 2018/19 return the deadline is 31st January 2020, meaning you would have until 31st January 2021 to amend the return.
When do Self Assessments have to be submitted by? (Paper/Online)
31st of October for paper returns and 31st of January for online returns.
What are the penalties for filing a late return?
If you miss the deadline you will immediately receive a £100 penalty from HMRC. If the return is still not received within three months of the filing date you will be charged £10 a day (up to £900). If it is still not received by six months (31st July) you will receive an additional £300 penalty, and a further £300 penalty is also charged after 12 months. Please be aware that interest will also be due on top of these penalties made by HMRC