Our free version follows the WooCommerce tax settings, therefore, if you include tax to the prices:
…the Simple template will display the Tax this way:
If you are showing the prices excluding taxes, the PDF invoice will look like this (in a separated line):
In addition, if you choose to display the tax totals itemized:
…the tax rates will be itemized in the total’s area too, if you have more than one tax rate:
If you need a more granular way of configuration, with the Premium Templates extension, you can use the customizer and tailor your PDF documents, independently of the WooCommerce tax settings.