The total expense amount is exclude GST (or include)

If the vendor is GST registered you may receive the invoice (or receipt) which total amount is either inclusive or exclusive of GST

1. Add new expenses
    
2. Tick on the checkbox This supplier is GST registered
3. Enter the expenses category
4. Fill in the amount of expenses
5. Toggle the button either inclusive / exclusive from action bar on top
6. Total amount will update accordingly
7. Save the expenses