Is there a way that you can enter a debit amount in a journal entry as a GST inclusive sum?
Yes, there is, ames-maskell.
You will have to manually calculate the inclusive amount and then add the GST tax in the journal entry. For example, you have a sale for 100. To get the inclusive amount, you can divide it with 1.10 to get a sum of 90.91. Then, create a journal entry and select GST(10%), so the taxable amount would be 9.09. By doing this, you will be able to enter the debit amount as a GST inclusive.
For recording your daily transactions, it would be best to create invoices, sales receipts, etc. to ensure the accuracy of your reports.
If you have any other questions about GST in QuickBooks, feel free to leave a comment. Thanks.