Edit a Tax Code
Note that the changes you make will affect all orders entered after the change. The new rates entered will not apply to existing orders.
1.Select File > Customer > Tax.
2.Enter the tax code that you would like to edit in the Tax Code field and press Tab, or use the 
to search for the correct code.
3.Click the Edit button in the bottom toolbar.
4.Make the necessary changes to the tax code. When you have completed these changes, click the Save button in the bottom toolbar to re-save the tax code to the system.