“Just Lisa Now!” I totally understand that tax season does not officially open until the 29th; however that still does not mean preparation and inputting info is not allowed. You just cannot submit to the IRS until the 29th! Proseries will allow you to input tax info into the application and 1040 return. And my question came about from inputting the info into the system, during the final federal review the error message appeared with an issue on the form.