Are you confused as to whether you can make changes to your Self-Assessment tax return once you have submitted? If you have just spotted a mistake then don’t panic, there are ways to amend it. To find out more information read the latest blog below.

Is it possible to amend your tax return?

As you are probably aware the deadline for filing the 2017/18 Self-Assessment tax returns was the 31 January 2019.  If you have already filed your returned but have noticed that you have made a mistake, then do not panic as you can amend it.

What are the time limits?

If you have submitted your tax return, but you want to make a change then it is possible to amend it if you do it within twelve months from the filing deadline.

For example:

If you have submitted your 2017/18 return online, then you will have until 31 January 2020 to amend it.

What are the restrictions?

You should note that if you have submitted your 2016/17 tax return or an earlier year then you will no longer be able to file an amended tax-return.

If this is the case, then you would have to write to HMRC to tell them error and ask them to change it.

How do I correct my tax return?

If you want to file an amended tax return and you still have time to, then the process of filing the return will depend upon whether you filed your return online or via a paper copy.

What is the process if I filed my tax return online?

If you filed your tax return online, then you can amend your return online as well.

To do this you just need to log into your HMRC online account and select the Self-Assessment from the home page.

There is a column with the heading ‘returns’, this will specify if you have submitted your self-assessment tax return and will provide the option to ‘Amend your Self-Assessment return’.

You will then be presented with further options:

  • Delete a section from your submitted return
  • Add a new section to your submitted return
  • Amend figures already submitted
  • Add/delete a section and/or amend a figure

Once, you have selected the appropriate option for you, then you can amend your return and file the corrected copy.

How do I amend my tax return if I submitted a paper copy?

If you originally submitted a paper copy of your Self-Assessment tax return, then you still have the 12 month amendment window, which will run to 31 October after the filing deadline.

You should be aware that an earlier deadline applies to paper returns.

The process of amending a paper return is to download a new return and update it to the correct figures, and then send it directly to HMRC.

What happens if my amended tax return affects my tax bill?

If the changes to your Self-Assessment tax return changes the amount of tax you owe, then you must pay the amount as well as the interest.

In the case that the amount of tax that you owe is reduced and you have already paid it, then you will be eligible for a tax refund.

Further Actions

If you have submitted your Self-Assessment tax return already and believe that you have made a mistake, then be sure to check it as you could potentially be eligible for tax refund.

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