I have problem with tax caluclation.

I defined 2 VATs:
- 20 %
- 8,5 %

Let's say that the product price is 2,00 EUR. When the price for a product with 20% VAT is calculated, it is folowing:

Price withouth VAT: 1,67 EUR
20% VAT: 0,33 EUR
Until here everything is ok.

But then, I get also 8,5% on top of 2,00 EUR. So the final price is: 2,17.

Can anybody help me?

Najtsirk