The HUB Testing will begin Tuesday, January 17, 2023 During this time, we will begin sending batches of tax returns to the IRS for processing. You may begin to receive IRS acknowledgments as early as Tuesday, January 17th. Please be aware that any transmitted returns will be sent to the IRS for processing. Due to MeF (Modernized e-File), once you transmit a return, the return cannot be deleted from the servers. If you need to make a change on a return that is e-filed, you will need to amend the return.