When you pay for any product, any food or drink or any service, you pay tax at the same time. This is a small additional amount on the value of each product. This is called the Value Added Tax (IVA) and is incorporated into the price offered to the public.
No company can demand additional payment for taxes, since the sale price must reflect the relevant IVA percentage. There are three types, 6%, 21% and 32%, depending on whether the product is of prime necessity or luxury.