Once a return has been submitted electronically, it cannot be stopped. If you have submitted your return by e-file, it will be transmitted to the IRS and processed. You will receive an acknowledgement from the IRS indicating the acceptance or rejection of your return, generally within 48 hours of their receiving it.
If the IRS rejects the return, you will have an opportunity to go back through your return and make the necessary corrections. Once the corrections have been made, you can resubmit the return electronically for no additional charge (if you are using the same product).
If the IRS accepts your return, you will need to file an Amended Return which is Form 1040X to make any changes. The Form 1040X is included in the TaxACT Deluxe and TaxACT Professional 1040 products. The Form 1040X cannot be electronically filed; therefore you will need to print the form and mail it to the IRS.