In previous odoo versions under: Accounting -> Configuration -> Accounting -> Taxes, you could click on a random tax code then go to "Action" and select "Tax Lines" or "Net Tax Lines". This was an easy way to display tax amount or net tax amount. 

Since version 11 this feature isn't available anymore as you can see on the screenshots. 

Maybe it was moved somewhere else? How do you handle the tax validation in odoo 11?

(Tested on V11 Enterprise and Community)

Thanks in advance.