I've searched the web, and this forum to no avail. I've configured flat tax rates and that is working perfectly as a normal user or as guest; in the cart it displays the price with tax included and on a separate line the amount for the tax, just as I want it to.
However when I am logged in as Admin the price is always excluding tax and the tax rate is always zero.
Checked both; This is an initial setup and all "Tax exempt" checkboxes are unchecked. I'm using the "FixedOrByCountryStateZip" plugin with fixed rates - not based on address.
Found it, fixed it. In the "Tax Settings" the "Tax based on" property was set to "Billing address"; when I set it to "Default address" display was correct.
That makes me wonder why, as the billing address of the Admin is the same as the default address.