General tax rate influent all my products?

-- url of the page with the problem -- : 5.10.105.46/~yamitysb/
-- HikaShop version -- : 2.3.1
-- Joomla version -- : 3.3
-- PHP version -- : 5.3.28

I would like to add one tax rate to all my products.
At the moment my default tax category is 0%.
I managed to set new tax category but i can't make it the default one.
How can I make one tax rate to influent all my products?

Hi,

The tax rule must be applied to the main shop zone, this way it will be set for all the products.
To see the tax rate in the product listings / pages, etc, you have to select "With tax" for the option "Show taxed prices" in Configuration > Main > Taxes