Hi there, @Trish1998. I'm here to share more details about the discontinuation policy of QuickBooks Desktop (QBDT) version 2019.

You can still use the QBDT Mac 2019 program so long as you don't need the add-on services. This includes e-services such as tax filing and online banking. If you are going to import your bank transactions manually from your bank's website, you can still use it to do the reconciliation process. 

To know more information about the discontinuation policy, you can check out this article: QuickBooks Desktop service discontinuation policy. 
 

Furthermore, you can also check our Product Updates page to learn more about the newest news and updates in QuickBooks.

You can always add them in your reply if you have additional questions about the discontinuation policy or any QuickBooks-related topics. I'm always here ready to back you up. Stay safe!