Applying Tax on the commission


For some items, we need to apply the VAT on the commission. For example, for a product of 10 euro, we give 10% to the customers, so the selling price becomes 9 euro. In this case, the system applies the VAT on the 9 euro.

However, in this particular case, I’m looking for a way to get the VAT on 1 euro which is the amount of the commission.

Any help is much appreciated!
thank you,