Q. I'm not sure what the difference between IRS Form 8879 and Form 8453 is. Can you explain?
A. When eFiling your return, Form 8879 is almost always used. You use Form 8453 when attachments or explanations need to be submitted to the IRS. This would include items such as multiple listings of security transactions, release of dependents, etc. You can download Form 8453 and it will give you a list of what may be attached along with proper addresses depending on what part of the country you live it.