Hi joanneaday,
Welcome to Community! QuickBooks Online provides multiple reports for all areas of your books. The Profit and Loss report shows an overview of a specific period of time, and has customization limitations. I can understand the importance of having the ability to view details of your GST by account. I would be glad to help!
The Balance Sheet provides more details, including the associated accounts for GST. In addition, you can customize it with additional filters, so you can see what matters most.
If you have any other questions, feel free to reach out. We would be happy to assist!