diff --git a/account_avatax_sale_oca/views/sale_order_view.xml b/account_avatax_sale_oca/views/sale_order_view.xml
index c01f4375d..b4536ec8a 100644
--- a/account_avatax_sale_oca/views/sale_order_view.xml
+++ b/account_avatax_sale_oca/views/sale_order_view.xml
@@ -60,11 +60,11 @@
                 <field name="calculate_tax_on_save" invisible="1" />
                 <field name="tax_amount" invisible="1" />
             </field>
-            <xpath expr="//field[@name='order_line']//tree" position="inside">
+            <xpath expr="//field[@name='order_line']/tree" position="inside">
                 <field name="tax_amt" groups="base.group_no_one" optional="hide" />
             </xpath>
             <xpath
-                expr="//field[@name='order_line']//form//field[@name='product_id']"
+                expr="//field[@name='order_line']/form//field[@name='product_id']"
                 position="after"
             >
                 <field name="tax_amt" groups="base.group_no_one" optional="hide" />
diff --git a/account_ecotax_sale/README.rst b/account_ecotax_sale/README.rst
new file mode 100644
index 000000000..fcd771554
--- /dev/null
+++ b/account_ecotax_sale/README.rst
@@ -0,0 +1,89 @@
+======================
+sale Ecotax Management
+======================
+
+.. 
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! This file is generated by oca-gen-addon-readme !!
+   !! changes will be overwritten.                   !!
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! source digest: sha256:731b0e3366890dbeca7db020b75324a2d458308b74991b4ce1d16937c9591178
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+.. |badge1| image:: https://img.shields.io/badge/maturity-Beta-yellow.png
+    :target: https://odoo-community.org/page/development-status
+    :alt: Beta
+.. |badge2| image:: https://img.shields.io/badge/licence-AGPL--3-blue.png
+    :target: http://www.gnu.org/licenses/agpl-3.0-standalone.html
+    :alt: License: AGPL-3
+.. |badge3| image:: https://img.shields.io/badge/github-OCA%2Faccount--fiscal--rule-lightgray.png?logo=github
+    :target: https://github.com/OCA/account-fiscal-rule/tree/16.0/account_ecotax_sale
+    :alt: OCA/account-fiscal-rule
+.. |badge4| image:: https://img.shields.io/badge/weblate-Translate%20me-F47D42.png
+    :target: https://translation.odoo-community.org/projects/account-fiscal-rule-16-0/account-fiscal-rule-16-0-account_ecotax_sale
+    :alt: Translate me on Weblate
+.. |badge5| image:: https://img.shields.io/badge/runboat-Try%20me-875A7B.png
+    :target: https://runboat.odoo-community.org/builds?repo=OCA/account-fiscal-rule&target_branch=16.0
+    :alt: Try me on Runboat
+
+|badge1| |badge2| |badge3| |badge4| |badge5|
+
+This module is an extension of the module *l10n_fr_ecotax* for sale orders. Please refer to the README of the module *account_ecotax* for more info about ecotax management.
+
+**Table of contents**
+
+.. contents::
+   :local:
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues <https://github.com/OCA/account-fiscal-rule/issues>`_.
+In case of trouble, please check there if your issue has already been reported.
+If you spotted it first, help us to smash it by providing a detailed and welcomed
+`feedback <https://github.com/OCA/account-fiscal-rule/issues/new?body=module:%20account_ecotax_sale%0Aversion:%2016.0%0A%0A**Steps%20to%20reproduce**%0A-%20...%0A%0A**Current%20behavior**%0A%0A**Expected%20behavior**>`_.
+
+Do not contact contributors directly about support or help with technical issues.
+
+Credits
+=======
+
+Authors
+~~~~~~~
+
+* Akretion
+
+Contributors
+~~~~~~~~~~~~
+
+* Mourad EL HADJ MIMOUNE <mourad.elhadj.mimoune@akretion.com>
+* Florian DA COSTA <florian.dacosta@akretion.com>
+
+
+Maintainers
+~~~~~~~~~~~
+
+This module is maintained by the OCA.
+
+.. image:: https://odoo-community.org/logo.png
+   :alt: Odoo Community Association
+   :target: https://odoo-community.org
+
+OCA, or the Odoo Community Association, is a nonprofit organization whose
+mission is to support the collaborative development of Odoo features and
+promote its widespread use.
+
+.. |maintainer-mourad-ehm| image:: https://github.com/mourad-ehm.png?size=40px
+    :target: https://github.com/mourad-ehm
+    :alt: mourad-ehm
+.. |maintainer-florian-dacosta| image:: https://github.com/florian-dacosta.png?size=40px
+    :target: https://github.com/florian-dacosta
+    :alt: florian-dacosta
+
+Current `maintainers <https://odoo-community.org/page/maintainer-role>`__:
+
+|maintainer-mourad-ehm| |maintainer-florian-dacosta| 
+
+This module is part of the `OCA/account-fiscal-rule <https://github.com/OCA/account-fiscal-rule/tree/16.0/account_ecotax_sale>`_ project on GitHub.
+
+You are welcome to contribute. To learn how please visit https://odoo-community.org/page/Contribute.
diff --git a/account_ecotax_sale/__init__.py b/account_ecotax_sale/__init__.py
new file mode 100644
index 000000000..0650744f6
--- /dev/null
+++ b/account_ecotax_sale/__init__.py
@@ -0,0 +1 @@
+from . import models
diff --git a/account_ecotax_sale/__manifest__.py b/account_ecotax_sale/__manifest__.py
new file mode 100644
index 000000000..dde2d6d54
--- /dev/null
+++ b/account_ecotax_sale/__manifest__.py
@@ -0,0 +1,19 @@
+# © 2014-2023 Akretion (http://www.akretion.com)
+#   @author Mourad EL HADJ MIMOUNE <mourad.elhadj.mimoune@akretion.com>
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+{
+    "name": "sale Ecotax Management",
+    "summary": "Sale Ecotaxe",
+    "version": "16.0.2.0.0",
+    "maintainers": ["mourad-ehm", "florian-dacosta"],
+    "author": "Akretion,Odoo Community Association (OCA)",
+    "website": "https://github.com/OCA/account-fiscal-rule",
+    "category": "Localization/Account Taxes",
+    "license": "AGPL-3",
+    "depends": ["account_ecotax", "sale"],
+    "data": [
+        "views/sale_view.xml",
+        "security/ir.model.access.csv",
+    ],
+    "installable": True,
+}
diff --git a/account_ecotax_sale/i18n/account_ecotaxe_sale.pot b/account_ecotax_sale/i18n/account_ecotaxe_sale.pot
new file mode 100644
index 000000000..097bb7fc3
--- /dev/null
+++ b/account_ecotax_sale/i18n/account_ecotaxe_sale.pot
@@ -0,0 +1,39 @@
+# Translation of Odoo Server.
+# This file contains the translation of the following modules:
+# 	* l10n_fr_ecotaxe_sale
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Odoo Server 15.0\n"
+"Report-Msgid-Bugs-To: \n"
+"Last-Translator: \n"
+"Language-Team: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: \n"
+"Plural-Forms: \n"
+
+#. module: l10n_fr_ecotaxe_sale
+#: model:ir.model.fields,field_description:l10n_fr_ecotaxe_sale.field_sale_order__amount_ecotaxe
+msgid "Included Ecotaxe"
+msgstr ""
+
+#. module: l10n_fr_ecotaxe_sale
+#: model:ir.model,name:l10n_fr_ecotaxe_sale.model_sale_order
+msgid "Sales Order"
+msgstr ""
+
+#. module: l10n_fr_ecotaxe_sale
+#: model:ir.model,name:l10n_fr_ecotaxe_sale.model_sale_order_line
+msgid "Sales Order Line"
+msgstr ""
+
+#. module: l10n_fr_ecotaxe_sale
+#: model:ir.model.fields,field_description:l10n_fr_ecotaxe_sale.field_sale_order_line__subtotal_ecotaxe
+msgid "Subtotal Ecotaxe"
+msgstr ""
+
+#. module: l10n_fr_ecotaxe_sale
+#: model:ir.model.fields,field_description:l10n_fr_ecotaxe_sale.field_sale_order_line__unit_ecotaxe_amount
+msgid "ecotaxe Unit."
+msgstr ""
diff --git a/account_ecotax_sale/i18n/fr.po b/account_ecotax_sale/i18n/fr.po
new file mode 100644
index 000000000..c39f68b5e
--- /dev/null
+++ b/account_ecotax_sale/i18n/fr.po
@@ -0,0 +1,42 @@
+# Translation of Odoo Server.
+# This file contains the translation of the following modules:
+# 	* l10n_fr_ecotaxe_sale
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Odoo Server 15.0+e\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2022-03-01 13:01+0000\n"
+"PO-Revision-Date: 2022-03-01 13:01+0000\n"
+"Last-Translator: \n"
+"Language-Team: \n"
+"Language: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: \n"
+"Plural-Forms: \n"
+
+#. module: l10n_fr_ecotaxe_sale
+#: model:ir.model.fields,field_description:l10n_fr_ecotaxe_sale.field_sale_order__amount_ecotaxe
+msgid "Included Ecotaxe"
+msgstr "Ecotaxe Incluse"
+
+#. module: l10n_fr_ecotaxe_sale
+#: model:ir.model,name:l10n_fr_ecotaxe_sale.model_sale_order
+msgid "Sales Order"
+msgstr "Bon de commande"
+
+#. module: l10n_fr_ecotaxe_sale
+#: model:ir.model,name:l10n_fr_ecotaxe_sale.model_sale_order_line
+msgid "Sales Order Line"
+msgstr "Ligne de bons de commande"
+
+#. module: l10n_fr_ecotaxe_sale
+#: model:ir.model.fields,field_description:l10n_fr_ecotaxe_sale.field_sale_order_line__subtotal_ecotaxe
+msgid "Subtotal Ecotaxe"
+msgstr "Sous-total Ecotaxe"
+
+#. module: l10n_fr_ecotaxe_sale
+#: model:ir.model.fields,field_description:l10n_fr_ecotaxe_sale.field_sale_order_line__unit_ecotaxe_amount
+msgid "ecotaxe Unit."
+msgstr "Ecotaxe par Unité"
diff --git a/account_ecotax_sale/models/__init__.py b/account_ecotax_sale/models/__init__.py
new file mode 100644
index 000000000..e95c7e574
--- /dev/null
+++ b/account_ecotax_sale/models/__init__.py
@@ -0,0 +1,3 @@
+from . import sale_order_line_ecotax
+from . import sale_order_line
+from . import sale_order
diff --git a/account_ecotax_sale/models/sale_order.py b/account_ecotax_sale/models/sale_order.py
new file mode 100644
index 000000000..2b930c623
--- /dev/null
+++ b/account_ecotax_sale/models/sale_order.py
@@ -0,0 +1,25 @@
+# © 2015 -2023 Akretion (http://www.akretion.com)
+#   @author Mourad EL HADJ MIMOUNE <mourad.elhadj.mimoune@akretion.com>
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from odoo import api, fields, models
+
+
+class SaleOrder(models.Model):
+
+    _inherit = "sale.order"
+
+    amount_ecotax = fields.Float(
+        digits="Ecotaxe",
+        string="Included Ecotaxe",
+        store=True,
+        compute="_compute_ecotax",
+    )
+
+    @api.depends("order_line.subtotal_ecotax")
+    def _compute_ecotax(self):
+        for order in self:
+            val_ecotax = 0.0
+            for line in order.order_line:
+                val_ecotax += line.subtotal_ecotax
+            order.amount_ecotax = val_ecotax
diff --git a/account_ecotax_sale/models/sale_order_line.py b/account_ecotax_sale/models/sale_order_line.py
new file mode 100644
index 000000000..5b512907f
--- /dev/null
+++ b/account_ecotax_sale/models/sale_order_line.py
@@ -0,0 +1,105 @@
+# © 2015 -2023 Akretion (http://www.akretion.com)
+#   @author Mourad EL HADJ MIMOUNE <mourad.elhadj.mimoune@akretion.com>
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from odoo import Command, api, fields, models
+
+
+class SaleOrderLine(models.Model):
+
+    _inherit = "sale.order.line"
+
+    ecotax_line_ids = fields.One2many(
+        "sale.order.line.ecotax",
+        "sale_order_line_id",
+        compute="_compute_ecotax_line_ids",
+        store=True,
+        readonly=False,
+        string="Ecotax lines",
+        copy=True,
+    )
+    subtotal_ecotax = fields.Float(
+        string="Ecotax", digits="Ecotax", store=True, compute="_compute_ecotax"
+    )
+    ecotax_amount_unit = fields.Float(
+        digits="Ecotax",
+        string="Ecotax Unit",
+        store=True,
+        compute="_compute_ecotax",
+    )
+
+    def _get_ecotax_amounts(self):
+        self.ensure_one()
+        unit = sum(self.ecotax_line_ids.mapped("amount_unit"))
+        subtotal_ecotax = sum(self.ecotax_line_ids.mapped("amount_total"))
+        return unit, subtotal_ecotax
+
+    @api.depends(
+        "currency_id",
+        "ecotax_line_ids.amount_unit",
+        "ecotax_line_ids.amount_total",
+    )
+    def _compute_ecotax(self):
+        for line in self:
+            amount_unit, subtotal = line._get_ecotax_amounts()
+            line.subtotal_ecotax = subtotal
+            line.ecotax_amount_unit = amount_unit
+
+    def _get_new_vals_list(self):
+        self.ensure_one()
+        new_vals_list = [
+            Command.create(
+                {
+                    "classification_id": ecotaxline_prod.classification_id.id,
+                    "force_amount_unit": ecotaxline_prod.force_amount,
+                }
+            )
+            for ecotaxline_prod in self.product_id.all_ecotax_line_product_ids
+        ]
+        return new_vals_list
+
+    @api.depends("product_id")
+    def _compute_ecotax_line_ids(self):
+        """Unlink and recreate ecotax_lines when modifying the product_id."""
+        for line in self:
+            delete_vals_list = [
+                Command.delete(taxline.id) for taxline in line.ecotax_line_ids
+            ]
+            new_vals_list = line._get_new_vals_list()
+            update = new_vals_list + delete_vals_list
+            line.ecotax_line_ids = update
+
+    def edit_ecotax_lines(self):
+        view = {
+            "name": ("Ecotax classification"),
+            "view_type": "form",
+            "view_mode": "form",
+            "res_model": "sale.order.line",
+            "view_id": self.env.ref(
+                "account_ecotax_sale.view_sale_line_ecotax_form"
+            ).id,
+            "type": "ir.actions.act_window",
+            "target": "new",
+            "res_id": self.id,
+        }
+        return view
+
+    def _prepare_invoice_line(self, **optional_values):
+        """Create equivalente ecotax_line_ids for account move line
+        from sale order line ecotax_line_ids .
+        """
+        res = super()._prepare_invoice_line(**optional_values)
+        ecotax_cls_vals = []
+        for ecotaxline in self.ecotax_line_ids:
+            ecotax_cls_vals.append(
+                (
+                    0,
+                    0,
+                    {
+                        "classification_id": ecotaxline.classification_id.id,
+                        "force_amount_unit": ecotaxline.force_amount_unit,
+                    },
+                )
+            )
+        res["ecotax_line_ids"] = ecotax_cls_vals
+        return res
diff --git a/account_ecotax_sale/models/sale_order_line_ecotax.py b/account_ecotax_sale/models/sale_order_line_ecotax.py
new file mode 100644
index 000000000..7e604197d
--- /dev/null
+++ b/account_ecotax_sale/models/sale_order_line_ecotax.py
@@ -0,0 +1,28 @@
+# © 2014-2023 Akretion (http://www.akretion.com)
+#   @author Mourad EL HADJ MIMOUNE <mourad.elhadj.mimoune@akretion.com>
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from odoo import fields, models
+
+
+class SaleOrderLineEcotaxe(models.Model):
+    _name = "sale.order.line.ecotax"
+    _inherit = "ecotax.line.mixin"
+    _description = "Sale order line ecotax"
+
+    sale_order_line_id = fields.Many2one(
+        comodel_name="sale.order.line",
+        string="Sale line",
+        required=True,
+        readonly=True,
+        index=True,
+        auto_join=True,
+        ondelete="cascade",
+    )
+    product_id = fields.Many2one(
+        "product.product", related="sale_order_line_id.product_id", readonly=True
+    )
+    quantity = fields.Float(related="sale_order_line_id.product_uom_qty", readonly=True)
+    currency_id = fields.Many2one(
+        related="sale_order_line_id.currency_id", readonly=True
+    )
diff --git a/account_ecotax_sale/readme/CONTRIBUTORS.rst b/account_ecotax_sale/readme/CONTRIBUTORS.rst
new file mode 100644
index 000000000..934f6e19b
--- /dev/null
+++ b/account_ecotax_sale/readme/CONTRIBUTORS.rst
@@ -0,0 +1,3 @@
+* Mourad EL HADJ MIMOUNE <mourad.elhadj.mimoune@akretion.com>
+* Florian DA COSTA <florian.dacosta@akretion.com>
+
diff --git a/account_ecotax_sale/readme/DESCRIPTION.rst b/account_ecotax_sale/readme/DESCRIPTION.rst
new file mode 100644
index 000000000..72cb84d5e
--- /dev/null
+++ b/account_ecotax_sale/readme/DESCRIPTION.rst
@@ -0,0 +1 @@
+This module is an extension of the module *l10n_fr_ecotax* for sale orders. Please refer to the README of the module *account_ecotax* for more info about ecotax management.
diff --git a/account_ecotax_sale/security/ir.model.access.csv b/account_ecotax_sale/security/ir.model.access.csv
new file mode 100644
index 000000000..4bf00332b
--- /dev/null
+++ b/account_ecotax_sale/security/ir.model.access.csv
@@ -0,0 +1,4 @@
+id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink
+access_ecotax_line_product_sale_readonly,ecotax.line.product readonly,account_ecotax.model_ecotax_line_product,sales_team.group_sale_salesman,1,0,0,0
+access_account_move_line_ecotax_readonly_sale_user,account.move.line.ecotax readonly sale user,account_ecotax.model_account_move_line_ecotax,sales_team.group_sale_salesman,1,0,0,0
+ir_model_access_sale_order_line_ecotax_group_sale_salesman,Read Full acess to model_sale_order_line_ecotax to group sale_salesman,model_sale_order_line_ecotax,sales_team.group_sale_salesman,1,1,1,1
diff --git a/account_ecotax_sale/static/description/icon.png b/account_ecotax_sale/static/description/icon.png
new file mode 100644
index 000000000..3a0328b51
Binary files /dev/null and b/account_ecotax_sale/static/description/icon.png differ
diff --git a/account_ecotax_sale/static/description/index.html b/account_ecotax_sale/static/description/index.html
new file mode 100644
index 000000000..5093f8750
--- /dev/null
+++ b/account_ecotax_sale/static/description/index.html
@@ -0,0 +1,426 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+<meta name="generator" content="Docutils: https://docutils.sourceforge.io/" />
+<title>sale Ecotax Management</title>
+<style type="text/css">
+
+/*
+:Author: David Goodger (goodger@python.org)
+:Id: $Id: html4css1.css 9511 2024-01-13 09:50:07Z milde $
+:Copyright: This stylesheet has been placed in the public domain.
+
+Default cascading style sheet for the HTML output of Docutils.
+Despite the name, some widely supported CSS2 features are used.
+
+See https://docutils.sourceforge.io/docs/howto/html-stylesheets.html for how to
+customize this style sheet.
+*/
+
+/* used to remove borders from tables and images */
+.borderless, table.borderless td, table.borderless th {
+  border: 0 }
+
+table.borderless td, table.borderless th {
+  /* Override padding for "table.docutils td" with "! important".
+     The right padding separates the table cells. */
+  padding: 0 0.5em 0 0 ! important }
+
+.first {
+  /* Override more specific margin styles with "! important". */
+  margin-top: 0 ! important }
+
+.last, .with-subtitle {
+  margin-bottom: 0 ! important }
+
+.hidden {
+  display: none }
+
+.subscript {
+  vertical-align: sub;
+  font-size: smaller }
+
+.superscript {
+  vertical-align: super;
+  font-size: smaller }
+
+a.toc-backref {
+  text-decoration: none ;
+  color: black }
+
+blockquote.epigraph {
+  margin: 2em 5em ; }
+
+dl.docutils dd {
+  margin-bottom: 0.5em }
+
+object[type="image/svg+xml"], object[type="application/x-shockwave-flash"] {
+  overflow: hidden;
+}
+
+/* Uncomment (and remove this text!) to get bold-faced definition list terms
+dl.docutils dt {
+  font-weight: bold }
+*/
+
+div.abstract {
+  margin: 2em 5em }
+
+div.abstract p.topic-title {
+  font-weight: bold ;
+  text-align: center }
+
+div.admonition, div.attention, div.caution, div.danger, div.error,
+div.hint, div.important, div.note, div.tip, div.warning {
+  margin: 2em ;
+  border: medium outset ;
+  padding: 1em }
+
+div.admonition p.admonition-title, div.hint p.admonition-title,
+div.important p.admonition-title, div.note p.admonition-title,
+div.tip p.admonition-title {
+  font-weight: bold ;
+  font-family: sans-serif }
+
+div.attention p.admonition-title, div.caution p.admonition-title,
+div.danger p.admonition-title, div.error p.admonition-title,
+div.warning p.admonition-title, .code .error {
+  color: red ;
+  font-weight: bold ;
+  font-family: sans-serif }
+
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+<body>
+<div class="document" id="sale-ecotax-management">
+<h1 class="title">sale Ecotax Management</h1>
+
+<!-- !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+!! This file is generated by oca-gen-addon-readme !!
+!! changes will be overwritten.                   !!
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+!! source digest: sha256:731b0e3366890dbeca7db020b75324a2d458308b74991b4ce1d16937c9591178
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! -->
+<p><a class="reference external image-reference" href="https://odoo-community.org/page/development-status"><img alt="Beta" src="https://img.shields.io/badge/maturity-Beta-yellow.png" /></a> <a class="reference external image-reference" href="http://www.gnu.org/licenses/agpl-3.0-standalone.html"><img alt="License: AGPL-3" src="https://img.shields.io/badge/licence-AGPL--3-blue.png" /></a> <a class="reference external image-reference" href="https://github.com/OCA/account-fiscal-rule/tree/16.0/account_ecotax_sale"><img alt="OCA/account-fiscal-rule" src="https://img.shields.io/badge/github-OCA%2Faccount--fiscal--rule-lightgray.png?logo=github" /></a> <a class="reference external image-reference" href="https://translation.odoo-community.org/projects/account-fiscal-rule-16-0/account-fiscal-rule-16-0-account_ecotax_sale"><img alt="Translate me on Weblate" src="https://img.shields.io/badge/weblate-Translate%20me-F47D42.png" /></a> <a class="reference external image-reference" href="https://runboat.odoo-community.org/builds?repo=OCA/account-fiscal-rule&amp;target_branch=16.0"><img alt="Try me on Runboat" src="https://img.shields.io/badge/runboat-Try%20me-875A7B.png" /></a></p>
+<p>This module is an extension of the module <em>l10n_fr_ecotax</em> for sale orders. Please refer to the README of the module <em>account_ecotax</em> for more info about ecotax management.</p>
+<p><strong>Table of contents</strong></p>
+<div class="contents local topic" id="contents">
+<ul class="simple">
+<li><a class="reference internal" href="#bug-tracker" id="toc-entry-1">Bug Tracker</a></li>
+<li><a class="reference internal" href="#credits" id="toc-entry-2">Credits</a><ul>
+<li><a class="reference internal" href="#authors" id="toc-entry-3">Authors</a></li>
+<li><a class="reference internal" href="#contributors" id="toc-entry-4">Contributors</a></li>
+<li><a class="reference internal" href="#maintainers" id="toc-entry-5">Maintainers</a></li>
+</ul>
+</li>
+</ul>
+</div>
+<div class="section" id="bug-tracker">
+<h1><a class="toc-backref" href="#toc-entry-1">Bug Tracker</a></h1>
+<p>Bugs are tracked on <a class="reference external" href="https://github.com/OCA/account-fiscal-rule/issues">GitHub Issues</a>.
+In case of trouble, please check there if your issue has already been reported.
+If you spotted it first, help us to smash it by providing a detailed and welcomed
+<a class="reference external" href="https://github.com/OCA/account-fiscal-rule/issues/new?body=module:%20account_ecotax_sale%0Aversion:%2016.0%0A%0A**Steps%20to%20reproduce**%0A-%20...%0A%0A**Current%20behavior**%0A%0A**Expected%20behavior**">feedback</a>.</p>
+<p>Do not contact contributors directly about support or help with technical issues.</p>
+</div>
+<div class="section" id="credits">
+<h1><a class="toc-backref" href="#toc-entry-2">Credits</a></h1>
+<div class="section" id="authors">
+<h2><a class="toc-backref" href="#toc-entry-3">Authors</a></h2>
+<ul class="simple">
+<li>Akretion</li>
+</ul>
+</div>
+<div class="section" id="contributors">
+<h2><a class="toc-backref" href="#toc-entry-4">Contributors</a></h2>
+<ul class="simple">
+<li>Mourad EL HADJ MIMOUNE &lt;<a class="reference external" href="mailto:mourad.elhadj.mimoune&#64;akretion.com">mourad.elhadj.mimoune&#64;akretion.com</a>&gt;</li>
+<li>Florian DA COSTA &lt;<a class="reference external" href="mailto:florian.dacosta&#64;akretion.com">florian.dacosta&#64;akretion.com</a>&gt;</li>
+</ul>
+</div>
+<div class="section" id="maintainers">
+<h2><a class="toc-backref" href="#toc-entry-5">Maintainers</a></h2>
+<p>This module is maintained by the OCA.</p>
+<a class="reference external image-reference" href="https://odoo-community.org">
+<img alt="Odoo Community Association" src="https://odoo-community.org/logo.png" />
+</a>
+<p>OCA, or the Odoo Community Association, is a nonprofit organization whose
+mission is to support the collaborative development of Odoo features and
+promote its widespread use.</p>
+<p>Current <a class="reference external" href="https://odoo-community.org/page/maintainer-role">maintainers</a>:</p>
+<p><a class="reference external image-reference" href="https://github.com/mourad-ehm"><img alt="mourad-ehm" src="https://github.com/mourad-ehm.png?size=40px" /></a> <a class="reference external image-reference" href="https://github.com/florian-dacosta"><img alt="florian-dacosta" src="https://github.com/florian-dacosta.png?size=40px" /></a></p>
+<p>This module is part of the <a class="reference external" href="https://github.com/OCA/account-fiscal-rule/tree/16.0/account_ecotax_sale">OCA/account-fiscal-rule</a> project on GitHub.</p>
+<p>You are welcome to contribute. To learn how please visit <a class="reference external" href="https://odoo-community.org/page/Contribute">https://odoo-community.org/page/Contribute</a>.</p>
+</div>
+</div>
+</div>
+</body>
+</html>
diff --git a/account_ecotax_sale/tests/__init__.py b/account_ecotax_sale/tests/__init__.py
new file mode 100644
index 000000000..809acf6a1
--- /dev/null
+++ b/account_ecotax_sale/tests/__init__.py
@@ -0,0 +1 @@
+from . import test_sale_ecotax
diff --git a/account_ecotax_sale/tests/test_sale_ecotax.py b/account_ecotax_sale/tests/test_sale_ecotax.py
new file mode 100644
index 000000000..7fd8a648f
--- /dev/null
+++ b/account_ecotax_sale/tests/test_sale_ecotax.py
@@ -0,0 +1,115 @@
+# © 2021-2023 Akretion (http://www.akretion.com)
+#   @author Mourad EL HADJ MIMOUNE <mourad.elhadj.mimoune@akretion.com>
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from odoo.tests.common import Form
+
+from odoo.addons.account_ecotax.tests.test_ecotax import TestInvoiceEcotaxCommon
+
+
+class TestsaleEcotaxCommon(TestInvoiceEcotaxCommon):
+    @classmethod
+    def setUpClass(cls):
+        super().setUpClass()
+        cls.product_a = cls.env["product.product"].create(
+            {
+                "name": "product_a",
+                "uom_id": cls.env.ref("uom.product_uom_unit").id,
+                "weight": 100,
+                "list_price": 200,
+            }
+        )
+        cls.product_b = cls.env["product.product"].create(
+            {
+                "name": "product_b",
+                "uom_id": cls.env.ref("uom.product_uom_unit").id,
+                "list_price": 200,
+                "weight": 400,
+            }
+        )
+
+        cls.product_a.ecotax_line_product_ids = [
+            (
+                0,
+                0,
+                {
+                    # 2.4
+                    "classification_id": cls.ecotax_fixed.id,
+                },
+            )
+        ]
+        cls.product_b.ecotax_line_product_ids = [
+            (
+                0,
+                0,
+                {
+                    "classification_id": cls.ecotax_weight.id,
+                },
+            )
+        ]
+
+    def create_sale_partner(self, partner_id, products_and_qty):
+        sale_form = Form(self.env["sale.order"])
+        sale_form.partner_id = partner_id
+
+        for product, qty in products_and_qty:
+            with sale_form.order_line.new() as line_form:
+                line_form.product_id = product
+                line_form.product_uom_qty = qty
+
+        sale = sale_form.save()
+
+        return sale
+
+    def _test_01_classification_weight_based_ecotax(self):
+        """Tests  with weight based ecotaxs"""
+        # in order to test the correct assignment of weight ecotax
+        # I create a customer sale.
+        partner12 = self.env.ref("base.res_partner_12")
+        self.sale = self.create_sale_partner(
+            partner_id=partner12, products_and_qty=[(self.product_b, 1.0)]
+        )
+        self.assertEqual(self.product_b.ecotax_amount, 16)
+        so_form = Form(self.sale)
+        with so_form.order_line.edit(0) as line:
+            line.product_uom_qty = 3.0
+        so_form.save()
+        self.assertEqual(self.sale.order_line.ecotax_amount_unit, 16)
+        self.assertEqual(self.sale.order_line.subtotal_ecotax, 48)
+        self.assertEqual(self.sale.amount_total, 600)
+        self.assertEqual(self.sale.amount_ecotax, 48)
+
+    def _test_02_classification_ecotax(self):
+        """Tests multiple lines with mixed ecotaxs"""
+        # in order to test the correct assignment of fixed ecotax and weight ecotax
+        # I create a customer sale.
+        partner12 = self.env.ref("base.res_partner_12")
+        self.sale = self.create_sale_partner(
+            partner_id=partner12,
+            products_and_qty=[(self.product_a, 1.0), (self.product_b, 2.0)],
+        )
+        # I assign a product with fixed ecotaxte to sale line
+        sale_line1 = self.sale.order_line[0]
+        # make sure to have 1 tax and fix tax rate
+        sale_line2 = self.sale.order_line[1]
+        # make sure to have 1 tax and fix tax rate
+        self.assertEqual(self.product_a.ecotax_amount, 5.0)
+        so_form = Form(self.sale)
+        with so_form.order_line.edit(0) as line:
+            line.product_uom_qty = 3.0
+        so_form.save()
+
+        self.assertEqual(sale_line1.ecotax_amount_unit, 5.0)
+        self.assertAlmostEqual(sale_line1.subtotal_ecotax, 15.0)
+        self.assertEqual(sale_line2.ecotax_amount_unit, 16)
+        self.assertEqual(sale_line2.subtotal_ecotax, 32)
+        self.assertEqual(self.sale.amount_total, 1000.0)
+        self.assertEqual(self.sale.amount_ecotax, 47.0)
+
+
+class TestsaleEcotax(TestsaleEcotaxCommon):
+    def test_01_classification_weight_based_ecotax(self):
+        self._test_01_classification_weight_based_ecotax()
+
+    def test_02_classification_ecotax(self):
+        self._test_02_classification_ecotax()
diff --git a/account_ecotax_sale/views/sale_view.xml b/account_ecotax_sale/views/sale_view.xml
new file mode 100644
index 000000000..b5162cf8a
--- /dev/null
+++ b/account_ecotax_sale/views/sale_view.xml
@@ -0,0 +1,161 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<!--
+   Copyright (C) 2015-2023 Akretion (http://www.akretion.com/)
+   @author: Mourad EL HADJ MIMOUNE <mourad.elhadj.mimoune@akretion.com>
+-->
+<odoo>
+    <record id="view_order_form" model="ir.ui.view">
+        <field name="model">sale.order</field>
+        <field name="inherit_id" ref="sale.view_order_form" />
+        <field name="arch" type="xml">
+            <field name="tax_totals" position="after">
+                <field name="amount_ecotax" class="oe_subtotal_footer_separator" />
+            </field>
+            <xpath
+                expr="//field[@name='order_line']/form//field[@name='tax_id']"
+                position="after"
+            >
+                <field name="ecotax_line_ids" colspan="2">
+                    <tree editable="bottom">
+                        <field name="classification_id" />
+                        <field name="force_amount_unit" />
+                        <field name="amount_unit" />
+                        <field name="amount_total" />
+                    </tree>
+                </field>
+                <field name="subtotal_ecotax" />
+                <field name="ecotax_amount_unit" />
+            </xpath>
+
+            <xpath
+                expr="//field[@name='order_line']/tree/field[last()]"
+                position="after"
+            >
+                <field name="subtotal_ecotax" optional="show" />
+                <field name="ecotax_amount_unit" optional="hide" />
+                <button name="edit_ecotax_lines" type="object" string="Ecotax" />
+                <field name="ecotax_line_ids" invisible="1">
+                    <!-- This is important to have these fields in view for the computed readonly False ecotax_line_ids field compute well
+                    as it acts as an onchange. -->
+                    <tree>
+                        <field name="classification_id" />
+                        <field name="force_amount_unit" />
+                        <field name="amount_unit" />
+                        <field name="amount_total" />
+                    </tree>
+                </field>
+            </xpath>
+        </field>
+    </record>
+
+    <record id="view_sale_line_ecotax_form" model="ir.ui.view">
+        <field name="name">sale.order.line.ecotax.form</field>
+        <field name="model">sale.order.line</field>
+        <field name="priority" eval="1000" />
+        <field name="arch" type="xml">
+            <form create="false">
+                <sheet>
+                    <field name="display_type" invisible="1" />
+                    <!--
+                        We need the sequence field to be here for new lines to be added at the correct position.
+                        TODO: at some point we want to fix this in the framework so that an invisible field is not required.
+                    -->
+                    <field name="sequence" invisible="1" />
+                    <field name="product_uom_category_id" invisible="1" />
+                    <group>
+                        <group attrs="{'invisible': [('display_type', '!=', False)]}">
+                            <field
+                                name="product_id"
+                                readonly="1"
+                                widget="many2one_barcode"
+                            />
+                            <field name="product_type" invisible="1" />
+                            <field name="invoice_status" invisible="1" />
+                            <field name="qty_to_invoice" invisible="1" />
+                            <field name="product_uom_qty" readonly="1" />
+                            <label
+                                for="qty_delivered"
+                                string="Delivered"
+                                invisible="1"
+                            />
+                            <div name="delivered_qty" invisible="1">
+                                <field name="qty_delivered" invisible="1" />
+                            </div>
+                            <label for="qty_invoiced" string="Invoiced" invisible="1" />
+                            <div name="invoiced_qty" invisible="1">
+                                <field name="qty_invoiced" />
+                            </div>
+                            <field
+                                name="product_packaging_qty"
+                                invisible="1"
+                                groups="product.group_stock_packaging"
+                            />
+                            <field
+                                name="product_packaging_id"
+                                invisible="1"
+                                groups="product.group_stock_packaging"
+                            />
+                            <field name="price_unit" />
+                            <field
+                                name="tax_id"
+                                widget="many2many_tags"
+                                options="{'no_create': True}"
+                                readonly="1"
+                            />
+                            <t groups="product.group_discount_per_so_line">
+                                <label for="discount" />
+                                <div name="discount">
+                                    <field name="discount" class="oe_inline" /> %
+                                </div>
+                            </t>
+                            <field name="sequence" invisible="1" />
+                        </group>
+                    </group>
+                    <label
+                        for="name"
+                        string="Description"
+                        attrs="{'invisible': [('display_type', '!=', False)]}"
+                    />
+                    <label
+                        for="name"
+                        string="Section Name (eg. Products, Services)"
+                        attrs="{'invisible': [('display_type', '!=', 'line_section')]}"
+                    />
+                    <label
+                        for="name"
+                        string="Note"
+                        attrs="{'invisible': [('display_type', '!=', 'line_note')]}"
+                    />
+                    <field name="name" />
+                    <div name="invoice_lines" groups="base.group_no_one" invisible="1">
+                        <label for="invoice_lines" />
+                        <field name="invoice_lines" />
+                    </div>
+                    <field name="state" invisible="1" />
+                    <field name="company_id" invisible="1" />
+                    <notebook>
+                        <page string="Ecotax lines" name="ecotax_line">
+                            <field
+                                name="ecotax_line_ids"
+                                nolabel="1"
+                                attrs="{'readonly': [('state', 'in', ('done', 'cancel'))]}"
+                            >
+                                   <tree editable="bottom">
+                                        <field name="classification_id" />
+                                        <field name="force_amount_unit" />
+                                        <field name="amount_unit" />
+                                        <field name="amount_total" sum="Total Ecotax" />
+                                   </tree>
+                                </field>
+                        </page>
+                    </notebook>
+                    <group>
+                        <field name="price_subtotal" string="Subtotal" />
+                        <field name="price_total" string="Total" />
+                    </group>
+                </sheet>
+            </form>
+        </field>
+    </record>
+
+</odoo>
diff --git a/account_ecotax_sale_tax/README.rst b/account_ecotax_sale_tax/README.rst
new file mode 100644
index 000000000..0c1c81cba
--- /dev/null
+++ b/account_ecotax_sale_tax/README.rst
@@ -0,0 +1,88 @@
+=================================
+sale Ecotax Management (as a tax)
+=================================
+
+.. 
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! This file is generated by oca-gen-addon-readme !!
+   !! changes will be overwritten.                   !!
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! source digest: sha256:731b0e3366890dbeca7db020b75324a2d458308b74991b4ce1d16937c9591178
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+.. |badge1| image:: https://img.shields.io/badge/maturity-Beta-yellow.png
+    :target: https://odoo-community.org/page/development-status
+    :alt: Beta
+.. |badge2| image:: https://img.shields.io/badge/licence-AGPL--3-blue.png
+    :target: http://www.gnu.org/licenses/agpl-3.0-standalone.html
+    :alt: License: AGPL-3
+.. |badge3| image:: https://img.shields.io/badge/github-OCA%2Faccount--fiscal--rule-lightgray.png?logo=github
+    :target: https://github.com/OCA/account-fiscal-rule/tree/16.0/account_ecotax_sale_tax
+    :alt: OCA/account-fiscal-rule
+.. |badge4| image:: https://img.shields.io/badge/weblate-Translate%20me-F47D42.png
+    :target: https://translation.odoo-community.org/projects/account-fiscal-rule-16-0/account-fiscal-rule-16-0-account_ecotax_sale_tax
+    :alt: Translate me on Weblate
+.. |badge5| image:: https://img.shields.io/badge/runboat-Try%20me-875A7B.png
+    :target: https://runboat.odoo-community.org/builds?repo=OCA/account-fiscal-rule&target_branch=16.0
+    :alt: Try me on Runboat
+
+|badge1| |badge2| |badge3| |badge4| |badge5|
+
+This module is an extension of the module *l10n_fr_ecotax* for sale orders. Please refer to the README of the module *l10n_fr_ecotax* for more info about ecotax management.
+
+**Table of contents**
+
+.. contents::
+   :local:
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues <https://github.com/OCA/account-fiscal-rule/issues>`_.
+In case of trouble, please check there if your issue has already been reported.
+If you spotted it first, help us to smash it by providing a detailed and welcomed
+`feedback <https://github.com/OCA/account-fiscal-rule/issues/new?body=module:%20account_ecotax_sale_tax%0Aversion:%2016.0%0A%0A**Steps%20to%20reproduce**%0A-%20...%0A%0A**Current%20behavior**%0A%0A**Expected%20behavior**>`_.
+
+Do not contact contributors directly about support or help with technical issues.
+
+Credits
+=======
+
+Authors
+~~~~~~~
+
+* Akretion
+
+Contributors
+~~~~~~~~~~~~
+
+* Mourad EL HADJ MIMOUNE <mourad.elhadj.mimoune@akretion.com>
+* Florian DA COSTA <florian.dacosta@akretion.com>
+
+Maintainers
+~~~~~~~~~~~
+
+This module is maintained by the OCA.
+
+.. image:: https://odoo-community.org/logo.png
+   :alt: Odoo Community Association
+   :target: https://odoo-community.org
+
+OCA, or the Odoo Community Association, is a nonprofit organization whose
+mission is to support the collaborative development of Odoo features and
+promote its widespread use.
+
+.. |maintainer-mourad-ehm| image:: https://github.com/mourad-ehm.png?size=40px
+    :target: https://github.com/mourad-ehm
+    :alt: mourad-ehm
+.. |maintainer-florian-dacosta| image:: https://github.com/florian-dacosta.png?size=40px
+    :target: https://github.com/florian-dacosta
+    :alt: florian-dacosta
+
+Current `maintainers <https://odoo-community.org/page/maintainer-role>`__:
+
+|maintainer-mourad-ehm| |maintainer-florian-dacosta| 
+
+This module is part of the `OCA/account-fiscal-rule <https://github.com/OCA/account-fiscal-rule/tree/16.0/account_ecotax_sale_tax>`_ project on GitHub.
+
+You are welcome to contribute. To learn how please visit https://odoo-community.org/page/Contribute.
diff --git a/account_ecotax_sale_tax/__init__.py b/account_ecotax_sale_tax/__init__.py
new file mode 100644
index 000000000..0650744f6
--- /dev/null
+++ b/account_ecotax_sale_tax/__init__.py
@@ -0,0 +1 @@
+from . import models
diff --git a/account_ecotax_sale_tax/__manifest__.py b/account_ecotax_sale_tax/__manifest__.py
new file mode 100644
index 000000000..f568e8a49
--- /dev/null
+++ b/account_ecotax_sale_tax/__manifest__.py
@@ -0,0 +1,17 @@
+# © 2014-2023 Akretion (http://www.akretion.com)
+#   @author Mourad EL HADJ MIMOUNE <mourad.elhadj.mimoune@akretion.com>
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+{
+    "name": "sale Ecotax Management (as a tax)",
+    "summary": "Sale Ecotaxe managed as a tax",
+    "version": "16.0.2.0.0",
+    "author": "Akretion,Odoo Community Association (OCA)",
+    "maintainers": ["mourad-ehm", "florian-dacosta"],
+    "website": "https://github.com/OCA/account-fiscal-rule",
+    "category": "Localization/Account Taxes",
+    "license": "AGPL-3",
+    "depends": ["account_ecotax_sale", "account_ecotax_tax"],
+    "data": ["views/sale_view.xml"],
+    "installable": True,
+    "auto_install": True,
+}
diff --git a/account_ecotax_sale_tax/models/__init__.py b/account_ecotax_sale_tax/models/__init__.py
new file mode 100644
index 000000000..8eb9d1d40
--- /dev/null
+++ b/account_ecotax_sale_tax/models/__init__.py
@@ -0,0 +1 @@
+from . import sale_order_line
diff --git a/account_ecotax_sale_tax/models/sale_order_line.py b/account_ecotax_sale_tax/models/sale_order_line.py
new file mode 100644
index 000000000..78606fb2d
--- /dev/null
+++ b/account_ecotax_sale_tax/models/sale_order_line.py
@@ -0,0 +1,85 @@
+# © 2015 -2023 Akretion (http://www.akretion.com)
+#   @author Mourad EL HADJ MIMOUNE <mourad.elhadj.mimoune@akretion.com>
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from odoo import api, fields, models
+
+
+class SaleOrderLine(models.Model):
+    _inherit = "sale.order.line"
+
+    subtotal_ecotax = fields.Float(compute="_compute_ecotax_tax")
+    ecotax_amount_unit = fields.Float(
+        compute="_compute_ecotax_tax",
+    )
+
+    def _get_ecotax_amounts(self):
+        self.ensure_one()
+        # do not call super as we completly change the way to compute it
+        ecotax_ids = self.tax_id.filtered(lambda tax: tax.is_ecotax)
+        if (self.display_type and self.display_type != "product") or not ecotax_ids:
+            return 0.0, 0.0
+        amount_currency = self.price_unit * (1 - self.discount / 100)
+        quantity = self.product_uom_qty
+        compute_all_currency = ecotax_ids.compute_all(
+            amount_currency,
+            currency=self.currency_id,
+            quantity=quantity,
+            product=self.product_id,
+            partner=self.order_id.partner_shipping_id,
+        )
+        subtotal_ecotax = 0.0
+        for tax in compute_all_currency["taxes"]:
+            subtotal_ecotax += tax["amount"]
+
+        unit = quantity and subtotal_ecotax / quantity or subtotal_ecotax
+        return unit, subtotal_ecotax
+
+    @api.depends(
+        "tax_id",
+        "product_uom_qty",
+        "product_id",
+    )
+    def _compute_ecotax_tax(self):
+        return self._compute_ecotax()
+
+    def _get_new_vals_list(self):
+        if not self.subtotal_ecotax:
+            return []
+        return super()._get_new_vals_list()
+
+    # ensure lines are re-generated in case ecotax_amount_unit of invoice line change
+    # without changing the product
+    @api.depends("ecotax_amount_unit", "subtotal_ecotax")
+    def _compute_ecotax_line_ids(self):
+        return super()._compute_ecotax_line_ids()
+
+    @api.depends("product_id", "company_id")
+    def _compute_tax_id(self):
+        res = super()._compute_tax_id()
+        for line in self:
+            line.tax_id |= line._get_computed_ecotaxes()
+        return res
+
+    def _get_computed_ecotaxes(self):
+        self.ensure_one()
+        sale_ecotaxes = self.product_id.all_ecotax_line_product_ids.mapped(
+            "classification_id"
+        ).mapped("sale_ecotax_ids")
+        ecotax_ids = sale_ecotaxes.filtered(
+            lambda tax: tax.company_id == self.order_id.company_id
+        )
+
+        if ecotax_ids and self.order_id.fiscal_position_id:
+            ecotax_ids = self.order_id.fiscal_position_id.map_tax(ecotax_ids)
+        return ecotax_ids
+
+    def _prepare_invoice_line(self, **optional_values):
+        res = super()._prepare_invoice_line(**optional_values)
+        # remove ecoltax_line_ids value if empty in vals so it is recomputed during
+        # invoice line creation. Example of use case : Ship a product not present in
+        # SO. So line is created with qty 0 (so with no ecotax) but in invoice it is
+        # added with a qty, with ecotax, so we want to recompute the ecotax report lines
+        if "ecotax_line_ids" in res and not res["ecotax_line_ids"]:
+            res.pop("ecotax_line_ids")
+        return res
diff --git a/account_ecotax_sale_tax/readme/CONTRIBUTORS.rst b/account_ecotax_sale_tax/readme/CONTRIBUTORS.rst
new file mode 100644
index 000000000..b38466d33
--- /dev/null
+++ b/account_ecotax_sale_tax/readme/CONTRIBUTORS.rst
@@ -0,0 +1,2 @@
+* Mourad EL HADJ MIMOUNE <mourad.elhadj.mimoune@akretion.com>
+* Florian DA COSTA <florian.dacosta@akretion.com>
diff --git a/account_ecotax_sale_tax/readme/DESCRIPTION.rst b/account_ecotax_sale_tax/readme/DESCRIPTION.rst
new file mode 100644
index 000000000..ad5cc0194
--- /dev/null
+++ b/account_ecotax_sale_tax/readme/DESCRIPTION.rst
@@ -0,0 +1 @@
+This module is an extension of the module *l10n_fr_ecotax* for sale orders. Please refer to the README of the module *l10n_fr_ecotax* for more info about ecotax management.
diff --git a/account_ecotax_sale_tax/static/description/icon.png b/account_ecotax_sale_tax/static/description/icon.png
new file mode 100644
index 000000000..3a0328b51
Binary files /dev/null and b/account_ecotax_sale_tax/static/description/icon.png differ
diff --git a/account_ecotax_sale_tax/static/description/index.html b/account_ecotax_sale_tax/static/description/index.html
new file mode 100644
index 000000000..b96ef45c4
--- /dev/null
+++ b/account_ecotax_sale_tax/static/description/index.html
@@ -0,0 +1,426 @@
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+<h1 class="title">sale Ecotax Management (as a tax)</h1>
+
+<!-- !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+!! This file is generated by oca-gen-addon-readme !!
+!! changes will be overwritten.                   !!
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+!! source digest: sha256:731b0e3366890dbeca7db020b75324a2d458308b74991b4ce1d16937c9591178
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! -->
+<p><a class="reference external image-reference" href="https://odoo-community.org/page/development-status"><img alt="Beta" src="https://img.shields.io/badge/maturity-Beta-yellow.png" /></a> <a class="reference external image-reference" href="http://www.gnu.org/licenses/agpl-3.0-standalone.html"><img alt="License: AGPL-3" src="https://img.shields.io/badge/licence-AGPL--3-blue.png" /></a> <a class="reference external image-reference" href="https://github.com/OCA/account-fiscal-rule/tree/16.0/account_ecotax_sale_tax"><img alt="OCA/account-fiscal-rule" src="https://img.shields.io/badge/github-OCA%2Faccount--fiscal--rule-lightgray.png?logo=github" /></a> <a class="reference external image-reference" href="https://translation.odoo-community.org/projects/account-fiscal-rule-16-0/account-fiscal-rule-16-0-account_ecotax_sale_tax"><img alt="Translate me on Weblate" src="https://img.shields.io/badge/weblate-Translate%20me-F47D42.png" /></a> <a class="reference external image-reference" href="https://runboat.odoo-community.org/builds?repo=OCA/account-fiscal-rule&amp;target_branch=16.0"><img alt="Try me on Runboat" src="https://img.shields.io/badge/runboat-Try%20me-875A7B.png" /></a></p>
+<p>This module is an extension of the module <em>l10n_fr_ecotax</em> for sale orders. Please refer to the README of the module <em>l10n_fr_ecotax</em> for more info about ecotax management.</p>
+<p><strong>Table of contents</strong></p>
+<div class="contents local topic" id="contents">
+<ul class="simple">
+<li><a class="reference internal" href="#bug-tracker" id="toc-entry-1">Bug Tracker</a></li>
+<li><a class="reference internal" href="#credits" id="toc-entry-2">Credits</a><ul>
+<li><a class="reference internal" href="#authors" id="toc-entry-3">Authors</a></li>
+<li><a class="reference internal" href="#contributors" id="toc-entry-4">Contributors</a></li>
+<li><a class="reference internal" href="#maintainers" id="toc-entry-5">Maintainers</a></li>
+</ul>
+</li>
+</ul>
+</div>
+<div class="section" id="bug-tracker">
+<h1><a class="toc-backref" href="#toc-entry-1">Bug Tracker</a></h1>
+<p>Bugs are tracked on <a class="reference external" href="https://github.com/OCA/account-fiscal-rule/issues">GitHub Issues</a>.
+In case of trouble, please check there if your issue has already been reported.
+If you spotted it first, help us to smash it by providing a detailed and welcomed
+<a class="reference external" href="https://github.com/OCA/account-fiscal-rule/issues/new?body=module:%20account_ecotax_sale_tax%0Aversion:%2016.0%0A%0A**Steps%20to%20reproduce**%0A-%20...%0A%0A**Current%20behavior**%0A%0A**Expected%20behavior**">feedback</a>.</p>
+<p>Do not contact contributors directly about support or help with technical issues.</p>
+</div>
+<div class="section" id="credits">
+<h1><a class="toc-backref" href="#toc-entry-2">Credits</a></h1>
+<div class="section" id="authors">
+<h2><a class="toc-backref" href="#toc-entry-3">Authors</a></h2>
+<ul class="simple">
+<li>Akretion</li>
+</ul>
+</div>
+<div class="section" id="contributors">
+<h2><a class="toc-backref" href="#toc-entry-4">Contributors</a></h2>
+<ul class="simple">
+<li>Mourad EL HADJ MIMOUNE &lt;<a class="reference external" href="mailto:mourad.elhadj.mimoune&#64;akretion.com">mourad.elhadj.mimoune&#64;akretion.com</a>&gt;</li>
+<li>Florian DA COSTA &lt;<a class="reference external" href="mailto:florian.dacosta&#64;akretion.com">florian.dacosta&#64;akretion.com</a>&gt;</li>
+</ul>
+</div>
+<div class="section" id="maintainers">
+<h2><a class="toc-backref" href="#toc-entry-5">Maintainers</a></h2>
+<p>This module is maintained by the OCA.</p>
+<a class="reference external image-reference" href="https://odoo-community.org">
+<img alt="Odoo Community Association" src="https://odoo-community.org/logo.png" />
+</a>
+<p>OCA, or the Odoo Community Association, is a nonprofit organization whose
+mission is to support the collaborative development of Odoo features and
+promote its widespread use.</p>
+<p>Current <a class="reference external" href="https://odoo-community.org/page/maintainer-role">maintainers</a>:</p>
+<p><a class="reference external image-reference" href="https://github.com/mourad-ehm"><img alt="mourad-ehm" src="https://github.com/mourad-ehm.png?size=40px" /></a> <a class="reference external image-reference" href="https://github.com/florian-dacosta"><img alt="florian-dacosta" src="https://github.com/florian-dacosta.png?size=40px" /></a></p>
+<p>This module is part of the <a class="reference external" href="https://github.com/OCA/account-fiscal-rule/tree/16.0/account_ecotax_sale_tax">OCA/account-fiscal-rule</a> project on GitHub.</p>
+<p>You are welcome to contribute. To learn how please visit <a class="reference external" href="https://odoo-community.org/page/Contribute">https://odoo-community.org/page/Contribute</a>.</p>
+</div>
+</div>
+</div>
+</body>
+</html>
diff --git a/account_ecotax_sale_tax/tests/__init__.py b/account_ecotax_sale_tax/tests/__init__.py
new file mode 100644
index 000000000..809acf6a1
--- /dev/null
+++ b/account_ecotax_sale_tax/tests/__init__.py
@@ -0,0 +1 @@
+from . import test_sale_ecotax
diff --git a/account_ecotax_sale_tax/tests/test_sale_ecotax.py b/account_ecotax_sale_tax/tests/test_sale_ecotax.py
new file mode 100644
index 000000000..542a514d4
--- /dev/null
+++ b/account_ecotax_sale_tax/tests/test_sale_ecotax.py
@@ -0,0 +1,19 @@
+# © 2021-2023 Akretion (http://www.akretion.com)
+#   @author Mourad EL HADJ MIMOUNE <mourad.elhadj.mimoune@akretion.com>
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+
+from odoo.addons.account_ecotax_sale.tests.test_sale_ecotax import TestsaleEcotaxCommon
+from odoo.addons.account_ecotax_tax.tests.test_ecotax import TestInvoiceEcotaxTaxComon
+
+
+class TestsaleEcotaxTax(TestInvoiceEcotaxTaxComon, TestsaleEcotaxCommon):
+    @classmethod
+    def setUpClass(cls):
+        super().setUpClass()
+
+    def test_01_classification_weight_based_ecotax(self):
+        self._test_01_classification_weight_based_ecotax()
+
+    def test_02_classification_ecotax(self):
+        self._test_02_classification_ecotax()
diff --git a/account_ecotax_sale_tax/views/sale_view.xml b/account_ecotax_sale_tax/views/sale_view.xml
new file mode 100644
index 000000000..063e95cd1
--- /dev/null
+++ b/account_ecotax_sale_tax/views/sale_view.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<odoo>
+
+    <record id="view_sale_line_ecotax_form" model="ir.ui.view">
+        <field name="model">sale.order.line</field>
+        <field name="inherit_id" ref="account_ecotax_sale.view_sale_line_ecotax_form" />
+        <field name="arch" type="xml">
+            <field name="ecotax_line_ids" position="attributes">
+                <attribute name="readonly">1</attribute>
+            </field>
+        </field>
+    </record>
+
+</odoo>
diff --git a/setup/account_ecotax_sale/odoo/addons/account_ecotax_sale b/setup/account_ecotax_sale/odoo/addons/account_ecotax_sale
new file mode 120000
index 000000000..49b4cc3dd
--- /dev/null
+++ b/setup/account_ecotax_sale/odoo/addons/account_ecotax_sale
@@ -0,0 +1 @@
+../../../../account_ecotax_sale
\ No newline at end of file
diff --git a/setup/account_ecotax_sale/setup.py b/setup/account_ecotax_sale/setup.py
new file mode 100644
index 000000000..28c57bb64
--- /dev/null
+++ b/setup/account_ecotax_sale/setup.py
@@ -0,0 +1,6 @@
+import setuptools
+
+setuptools.setup(
+    setup_requires=['setuptools-odoo'],
+    odoo_addon=True,
+)
diff --git a/setup/account_ecotax_sale_tax/odoo/addons/account_ecotax_sale_tax b/setup/account_ecotax_sale_tax/odoo/addons/account_ecotax_sale_tax
new file mode 120000
index 000000000..a8cf4c763
--- /dev/null
+++ b/setup/account_ecotax_sale_tax/odoo/addons/account_ecotax_sale_tax
@@ -0,0 +1 @@
+../../../../account_ecotax_sale_tax
\ No newline at end of file
diff --git a/setup/account_ecotax_sale_tax/setup.py b/setup/account_ecotax_sale_tax/setup.py
new file mode 100644
index 000000000..28c57bb64
--- /dev/null
+++ b/setup/account_ecotax_sale_tax/setup.py
@@ -0,0 +1,6 @@
+import setuptools
+
+setuptools.setup(
+    setup_requires=['setuptools-odoo'],
+    odoo_addon=True,
+)
diff --git a/test-requirements.txt b/test-requirements.txt
new file mode 100644
index 000000000..660449188
--- /dev/null
+++ b/test-requirements.txt
@@ -0,0 +1,2 @@
+odoo-addon-account_ecotax @ git+https://github.com/OCA/account-fiscal-rule.git@refs/pull/454/head#subdirectory=setup/account_ecotax
+odoo-addon-account_ecotax_tax @ git+https://github.com/OCA/account-fiscal-rule.git@refs/pull/454/head#subdirectory=setup/account_ecotax_tax