How important is mailing the Form 8453-OL to the IRS office? What happens if I forget to send it in?
It is very important. Since your signature on this form indicates your agreement with the return information submitted, taxpayers who do not provide the signature document may not be permitted to participate or use future IRS e-file options. The return is not considered complete until the signature document, Form 8453-OL is received by the IRS. BACK to top.
