Related Questions:
Bulk edit menu items
Add Multiple taxes to menu items
Can I override taxes on Menu Items?
Procedure:
Taxes to Menu Items can be updated within your settings in bulk, or one by one.
Batch Update Multiple Menu Items
Select Settings from the left-hand side of the app
Under Organization, click Menus
Select the Menu where the Menu Items are located
If the Menu Items are across multiple or all Menus you should then change the filter to All Menus
Click on the Checkbox at the top of the list to select all items on the page (or check the boxes next to multiple individual line items)
Click on the Select Bulk Action dropdown menu
Click Change Taxes
Click Apply
Select the Tax from the dropdown field
Press OK
Taxes within individual Menu Items
Select Settings from the left-hand side of the app
Under Organization, click Menus
Select the Menu where the Menu Item is located
Select the Menu Item
Change the tax accordingly
Click Save
Additional Information:
If you need to create a new tax prior to doing this, follow the steps outlined here
You must be an Admin User to perform the above tasks
Menu Items added to your Bookings, Events or Invoices after a tax has been edited on the item will reflect the change. Any Menu Items that existed prior to editing the tax, will remain unchanged. If you require the updated tax on any of Menu Items, you can simply remove & add the new tax to the Menu Item from within the Booking.