I have a QWeb report to print a product pricelist and I want to have an option to print prices without taxes. Inspired by "website_sale" module I used this code:

<t t-set="taxes" t-value="o.partner_id.property_account_position_id.map_tax(product.taxes_id.sudo().filtered(lambda x: x.company_id == res_company.currency_id))"/>
<span t-esc="taxes.compute_all(product.list_price, o.pricelist_id.currency_id, product=product, partner=o.partner_id)['total_excluded']"/>

But the prices are TAX INCL. I have set mu products with tax included in the price. However on the website this code works but not on the report.