You can change the tax type used for Mobile Sales App easily. This is useful if you generally wish to apply a particular tax type for customers on the go (via Mobile App).
To do so, go to your Dashboard> click on "More" (top right-hand corner)> Settings> You will see the categories.
Here, you can also choose if you want your orders to be tax inclusive or exclusive.
Tap on "Tax Types"
Select the Tax Type desired and it will be saved as the Mobile Sales App's default. That's it!