If your son claimed himself, then he will need to file an amended return. When amending, the box Someone can claim me as a dependent will need to be clicked so that you can claim the exemption. To file an amended tax return, follow the steps below:
To resolve your tax return, you will be unable to e-file so you will want to print, sign, and mail your tax return. If you would prefer to wait, then you could file for an extension and e-file once her amended tax return has been processed
