It explains how to amend your return if you need to make a change after it has been filed.

This page also shows the link, 'Amend your return'.

You can also amend your return if your circumstances change.

Operation Smile officials say they have also decided to amend their return.

Your company can amend its return, including the self assessment, at any time within 12 months of the statutory filing date.

You might need to amend your return if, for example:

Some claims have long time limits and so they can be made after the deadline for amending your return has passed.

When this has been clarified, you can amend your return if necessary.

However, you can amend your return up to 12 months after the filing date.

If you want to amend your return after you've filed it you can do so over the telephone or by post.