Yes.. sort of.
The good news is that we currently do support the functionality for this to be possible, however as a user of the MOBI platform there is no way within your Administrator Dashboard (or Store Settings panel) as there's no user interface (e.g. button) available for this to be done.
- This will instead need to be done by our development team in the back-end.
If you do require tax/GST-free items on your menu, please contact our MOBI Support team who will raise this with our developers, who will then be able to make your dreams come true.