Multistore - wrong VAT until country chosen in cart

[mysho]

Hi,

I am trying to setup a multistore. There are four domains:

.EU - main, shipping to every country
.DE - DE/AT
.CZ - CZ (VAT 21%)
.SK - SK (VAT 20%)

I am trying to setup VAT for .CZ domain. There is only one country enabled (CZ) and one tax rule (where is only CZ with 21% VAT enabled).

My problem: when I open the store, I see prices with 20% VAT until I choose country (Czech republic) in a cart. After that it changes value of the cart and also in catalog (after that I see all prices in the store with 21%).

So when I enter the store, I see a product for 120€. Add it to cart, fill in name/address etc, then choose country and boom I now see 121€. Then I open the store again and I see 121€ (not 120€). 

 

I have two tax rules. 

1. EU - every EU country with corresponding VAT rate (there is also Czech republic with 21%)
2. CZ - there is just Czech republic with 21% VAT rate

 

As I am editing the product (chosen .CZ store from the multistore switch) - prices - tax rule, it is showing like this:

Any idea? 

[Nickz]

Why do you try an ultra complex approach?
Isn't ist hard enough to launch a shop successfully?

A multi-shop is not necessary to sell more. First you need to break even, accumulate a little then launch nationally. Accumulate and get financing to launch internationally. 

I haven't seen one single multi-shop who made it big.

In order to help you need to give more details, i.e shop theme.