Yes, QuickBooks Desktop can be used offline when it’s installed on your local machine. However, if you’re using Splashtop for remote access, your QuickBooks Desktop needs to be online for you to connect to it remotely. Offline usage is limited to local access on the computer where QuickBooks is installed. If you need to work remotely, Splashtop ensures that you can securely access QuickBooks from anywhere as long as you have an internet connection.