Include additional taxes (Bebat, Recupel, etc.) in purchase price when calculating margin

The additional taxes (Bebat, Recupel, etc.) are currently displayed in your quotations but are not automatically included in the product’s purchase price.
As a result, when I set a margin per category, it’s calculated based on the purchase price excluding taxes.

Since we work with all our clients on a cost-plus model for hardware (purchase price + 5%), it’s important that the 5% margin is applied to the purchase price including all taxes.
5% is already a small margin, and if taxes are left out, the difference becomes even smaller.

At the moment, I manually adjust this by clicking the pencil icon for each product, re-entering the purchase price including taxes, and then updating the sales price.

Would it be possible to have this adjusted on your side?