David Zubler — Correct tax return mistakes before the IRS discovers them
There are two ways you can fix a mistake on your tax return and avoid costly penalties. Filing a superseding return allows you to treat your new information as if you had included it on your originally filed return. A superseding return can be either a corrected return (duplicate Form 1040) or an amended return (Form 1040X) that is filed before the deadline. If you filed an extension the extension deadline becomes your due date for filing the superseding return. Superseding returns can also be filed for business entity returns, such as Form 1120 or Form 1120S for corporations and Form 1065 fo...