You can also buy TurboTax Business from Amazon and it is actually less expensive (link below). However, the forms will probably not be finalized for quite some time so plan accordingly.
If you need to file the return before 1/1/19 then you use the 2018 program NOT the 2019 . When did you close the business ? Your filing date is the 15th of the third month after the closing date ... for instance ... closed business 6/30/19 ... due date of final return is 9/15/19.