Delete a tax
Go to the Settings menu, under 'Locations and Taxes' click on Taxes link. 'Taxes' page appears. Find the tax you wish to delete using Filter options and click on at the end of its row. Confirm you wish to delete this tax in a pop-up window.
A tax consists of tax classes, tax zones and tax rates. When you delete a tax you actually erase all of its components. Practically this means all products subject to this tax become free from tax unless you bind them to another tax.