I'm having a similar issue but there's too much GST being calculated. I have "Add tax to item" selected, but as soon as I add an item I set up as untaxable like Shipping, it adds extra GST. Not the % amount it's programmed to add either, just a few cents more than I have calculated by hand.
I think I got around it by editing the amount of the untaxable Shipping item to be a few cents less so the grand total at least matched my written receipt, but that's no long term solution to the problem. Any ideas?
@Sherisse_MK Hmm that sounds a bit strange. The tax calculations should be accurate and you shouldn't have to edit the amount of the item as a workaround!
It might be worth calling our Customer Success team so they can look at a past transaction with you and compare it with your calculations.
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