Tax On Work Orders Are Not Calculating Correctly

Tax settings for Work Orders are derived from the Location settings. On the top right click the gear icon and choose Locations.

Click on a Location you wish to edit.

This allows you to configure the default tax rate. One important item to note here is the option for Tax on Labor. Even if you manually set a tax rate on your Work Orders, this option will still apply. If you want tax to be calculated for both parts AND labor, make sure to check this box.