The GST field will always default to 10% of the total. However the GST amount can be edited in the event GST for an expense does not equate to 10% of the total.
Note: If you are registered for GST and want to on-charge and expense to a client, it's best to create 2 records. One for the GST inclusive items and one for the GST exclusive items. That way they will appear correctly on your invoice as per the ATO's invoice compliance requirements.
How to edit the GST amount in an expense record
1. Go the main Expense page
2. Add or open the record where GST needs to be amended and edit the GST
3. Click Save
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