Which method can be used for tracking time for billable work in QuickBooks?

Using the built-in timer feature in QuickBooks is an effective method for tracking time for billable work. This feature allows users to easily and accurately record the amount of time spent on specific tasks or projects. By activating the timer while working on a task, users can ensure that all billable hours are accurately tracked without the need for manual calculations. This automation helps streamline the billing process, improves accuracy, and allows users to focus more on their work rather than on time tracking.

The other methods presented may have some benefits, but they do not provide the same level of integration and ease of use as the built-in timer feature. Manual entries can lead to errors and require more administrative effort, reminders are useful for task management but do not track time spent, and linking external applications may introduce complexity and reliance on third-party software rather than utilizing the built-in tools provided by QuickBooks.