I have a problem with my Magento installation. I have set up the website with 21% Tax. When you look in the cart, you see a completely wrong price calculation.
The excluding price is right, but the tax amount and including tax price are not. An example:
Total without Tax: €2.149,00
Total with Tax: €2.699.29.
As you can see, nothing makes sense:
21% of €2.149,00 = €451,29.
21% of (2.149+99) = €472,08.
The total of the amounts: €2.149 + €99 + €468,47 is not: €2.699,29.
Can anyone please help with this problem? All the taxes are set up in the right way, and I am completely lost here.