diff --git a/sale_order_invoice_untaxed_amount/.gitignore b/sale_order_invoice_untaxed_amount/.gitignore
new file mode 100644
index 0000000..6da5887
--- /dev/null
+++ b/sale_order_invoice_untaxed_amount/.gitignore
@@ -0,0 +1,2 @@
+*.*~
+*pyc
diff --git a/sale_order_invoice_untaxed_amount/README.md b/sale_order_invoice_untaxed_amount/README.md
new file mode 100644
index 0000000..f8d9d69
--- /dev/null
+++ b/sale_order_invoice_untaxed_amount/README.md
@@ -0,0 +1,65 @@
+# sale_order_invoice_untaxed_amount
+
+Display the invoiced and uninvoiced untaxed total in the sale order.
+
+This module adds two stored computed fields on the sale order:
+
+- **Invoiced Untaxed Amount**: the sum of the untaxed amounts of all
+  non-cancelled invoices linked to the sale order.
+- **Uninvoiced Untaxed Amount**: the remaining untaxed amount still to be
+  invoiced (`amount_untaxed - invoiced_untaxed_amount`, never negative).
+
+Both fields are displayed:
+
+- In the **sale order form**, below the tax totals block.
+- In the **sale order list view**, as optional columns (hidden by default)
+  with column totals.
+
+## Installation
+
+Use Odoo normal module installation procedure to install
+`sale_order_invoice_untaxed_amount`.
+
+## Configuration
+
+This module does not require any configuration.
+
+## Usage
+
+1. Open or create a sale order.
+2. Confirm the order and create one or more invoices from it.
+3. The **Invoiced Untaxed Amount** and **Uninvoiced Untaxed Amount** are
+   displayed below the totals block of the sale order form.
+4. In the sale orders list view, enable the optional columns **Invoiced
+   Untaxed Amount** and **Uninvoiced Untaxed Amount** to compare invoiced and
+   remaining untaxed amounts across orders.
+
+The amounts are recomputed automatically whenever the order state, its
+invoices, or the invoices state change.
+
+## Known issues / Roadmap
+
+None yet.
+
+## Bug Tracker
+
+Bugs are tracked on [our issues website](https://github.com/elabore-coop/sale-tools/issues).
+In case of trouble, please check there if your issue has already been
+reported. If you spotted it first, help us smashing it by providing a
+detailed and welcomed feedback.
+
+## Credits
+
+### Contributors
+
+- Stéphan Sainléger
+
+### Funders
+
+The development of this module has been financially supported by:
+
+- Elabore (https://elabore.coop)
+
+### Maintainer
+
+This module is maintained by Elabore.
diff --git a/sale_order_invoice_untaxed_amount/__init__.py b/sale_order_invoice_untaxed_amount/__init__.py
new file mode 100644
index 0000000..fd46080
--- /dev/null
+++ b/sale_order_invoice_untaxed_amount/__init__.py
@@ -0,0 +1,3 @@
+
+from . import models
+
diff --git a/sale_order_invoice_untaxed_amount/__manifest__.py b/sale_order_invoice_untaxed_amount/__manifest__.py
new file mode 100644
index 0000000..e3956d8
--- /dev/null
+++ b/sale_order_invoice_untaxed_amount/__manifest__.py
@@ -0,0 +1,37 @@
+# Copyright 2022 Stéphan Sainléger (Elabore)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+{
+    "name": "sale_order_invoice_untaxed_amount",
+    "version": "18.0.1.0.0",
+    "author": "Elabore",
+    "website": "https://elabore.coop",
+    "maintainer": "Stéphan Sainléger",
+    "license": "AGPL-3",
+    "category": "Tools",
+    "summary": "Display the invoiced and uninvoiced untaxed total in the sale order",
+    # any module necessary for this one to work correctly
+    "depends": [
+        "account",
+        "sale",
+    ],
+    "qweb": [
+        # "static/src/xml/*.xml",
+    ],
+    "external_dependencies": {
+        "python": [],
+    },
+    # always loaded
+    "data": [
+        "views/sale_order_view.xml",
+    ],
+    # only loaded in demonstration mode
+    "demo": [],
+    "js": [],
+    "css": [],
+    "installable": True,
+    # Install this module automatically if all dependency have been previously
+    # and independently installed.  Used for synergetic or glue modules.
+    "auto_install": False,
+    "application": False,
+}
\ No newline at end of file
diff --git a/sale_order_invoice_untaxed_amount/i18n/README b/sale_order_invoice_untaxed_amount/i18n/README
new file mode 100644
index 0000000..62197a1
--- /dev/null
+++ b/sale_order_invoice_untaxed_amount/i18n/README
@@ -0,0 +1 @@
+This directory should contain the *.po for Odoo translation.
diff --git a/sale_order_invoice_untaxed_amount/i18n/fr.po b/sale_order_invoice_untaxed_amount/i18n/fr.po
new file mode 100644
index 0000000..707f5f7
--- /dev/null
+++ b/sale_order_invoice_untaxed_amount/i18n/fr.po
@@ -0,0 +1,56 @@
+# Translation of Odoo Server.
+# This file contains the translation of the following modules:
+# 	* sale_order_invoice_untaxed_amount
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Odoo Server 14.0\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2022-12-02 08:32+0000\n"
+"PO-Revision-Date: 2022-12-02 08:32+0000\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: sale_order_invoice_untaxed_amount
+#: model:ir.model.fields,field_description:sale_order_invoice_untaxed_amount.field_sale_order__display_name
+msgid "Display Name"
+msgstr "Nom affiché"
+
+#. module: sale_order_invoice_untaxed_amount
+#: model:ir.model.fields,field_description:sale_order_invoice_untaxed_amount.field_sale_order__id
+msgid "ID"
+msgstr ""
+
+#. module: sale_order_invoice_untaxed_amount
+#: model:ir.model.fields,field_description:sale_order_invoice_untaxed_amount.field_sale_order__invoiced_untaxed_amount
+msgid "Invoiced  Untaxed Amount"
+msgstr "Facturé HT"
+
+#. module: sale_order_invoice_untaxed_amount
+#: model_terms:ir.ui.view,arch_db:sale_order_invoice_untaxed_amount.view_order_tree_invoiced_untaxed_amount
+msgid "Invoiced Untaxed Total"
+msgstr "Facturé HT Total"
+
+#. module: sale_order_invoice_untaxed_amount
+#: model:ir.model.fields,field_description:sale_order_invoice_untaxed_amount.field_sale_order____last_update
+msgid "Last Modified on"
+msgstr "Dernière modification le"
+
+#. module: sale_order_invoice_untaxed_amount
+#: model:ir.model,name:sale_order_invoice_untaxed_amount.model_sale_order
+msgid "Sales Order"
+msgstr "Bon de commande"
+
+#. module: sale_order_invoice_untaxed_amount
+#: model:ir.model.fields,field_description:sale_order_invoice_untaxed_amount.field_sale_order__uninvoiced_untaxed_amount
+msgid "Uninvoiced Untaxed Amount"
+msgstr "Non-facturé HT"
+
+#. module: sale_order_invoice_untaxed_amount
+#: model_terms:ir.ui.view,arch_db:sale_order_invoice_untaxed_amount.view_order_tree_invoiced_untaxed_amount
+msgid "Uninvoiced Untaxed Total"
+msgstr "Non-facturé HT Total"
diff --git a/sale_order_invoice_untaxed_amount/i18n/sale_order_invoice_untaxed_amount.pot b/sale_order_invoice_untaxed_amount/i18n/sale_order_invoice_untaxed_amount.pot
new file mode 100644
index 0000000..51939a2
--- /dev/null
+++ b/sale_order_invoice_untaxed_amount/i18n/sale_order_invoice_untaxed_amount.pot
@@ -0,0 +1,56 @@
+# Translation of Odoo Server.
+# This file contains the translation of the following modules:
+# 	* sale_order_invoice_untaxed_amount
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Odoo Server 14.0\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2022-12-02 08:33+0000\n"
+"PO-Revision-Date: 2022-12-02 08:33+0000\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: sale_order_invoice_untaxed_amount
+#: model:ir.model.fields,field_description:sale_order_invoice_untaxed_amount.field_sale_order__display_name
+msgid "Display Name"
+msgstr ""
+
+#. module: sale_order_invoice_untaxed_amount
+#: model:ir.model.fields,field_description:sale_order_invoice_untaxed_amount.field_sale_order__id
+msgid "ID"
+msgstr ""
+
+#. module: sale_order_invoice_untaxed_amount
+#: model:ir.model.fields,field_description:sale_order_invoice_untaxed_amount.field_sale_order__invoiced_untaxed_amount
+msgid "Invoiced  Untaxed Amount"
+msgstr ""
+
+#. module: sale_order_invoice_untaxed_amount
+#: model_terms:ir.ui.view,arch_db:sale_order_invoice_untaxed_amount.view_order_tree_invoiced_untaxed_amount
+msgid "Invoiced Untaxed Total"
+msgstr ""
+
+#. module: sale_order_invoice_untaxed_amount
+#: model:ir.model.fields,field_description:sale_order_invoice_untaxed_amount.field_sale_order____last_update
+msgid "Last Modified on"
+msgstr ""
+
+#. module: sale_order_invoice_untaxed_amount
+#: model:ir.model,name:sale_order_invoice_untaxed_amount.model_sale_order
+msgid "Sales Order"
+msgstr ""
+
+#. module: sale_order_invoice_untaxed_amount
+#: model:ir.model.fields,field_description:sale_order_invoice_untaxed_amount.field_sale_order__uninvoiced_untaxed_amount
+msgid "Uninvoiced Untaxed Amount"
+msgstr ""
+
+#. module: sale_order_invoice_untaxed_amount
+#: model_terms:ir.ui.view,arch_db:sale_order_invoice_untaxed_amount.view_order_tree_invoiced_untaxed_amount
+msgid "Uninvoiced Untaxed Total"
+msgstr ""
diff --git a/sale_order_invoice_untaxed_amount/models/__init__.py b/sale_order_invoice_untaxed_amount/models/__init__.py
new file mode 100644
index 0000000..6aacb75
--- /dev/null
+++ b/sale_order_invoice_untaxed_amount/models/__init__.py
@@ -0,0 +1 @@
+from . import sale_order
diff --git a/sale_order_invoice_untaxed_amount/models/sale_order.py b/sale_order_invoice_untaxed_amount/models/sale_order.py
new file mode 100644
index 0000000..639253e
--- /dev/null
+++ b/sale_order_invoice_untaxed_amount/models/sale_order.py
@@ -0,0 +1,43 @@
+# Copyright (C) 2021 ForgeFlow S.L.
+# License LGPL-3.0 or later (https://www.gnu.org/licenses/lgpl.html)
+
+from odoo import api, fields, models
+
+
+class SaleOrder(models.Model):
+
+    _inherit = "sale.order"
+
+    invoiced_untaxed_amount = fields.Monetary(
+        string="Invoiced  Untaxed Amount",
+        compute="_compute_invoice_untaxed_amount",
+        store=True,
+    )
+
+    uninvoiced_untaxed_amount = fields.Monetary(
+        string="Uninvoiced Untaxed Amount",
+        compute="_compute_invoice_untaxed_amount",
+        store=True,
+    )
+
+    @api.depends(
+        "state",
+        "invoice_ids",
+        "invoice_ids.amount_untaxed_signed",
+        "amount_total",
+        "invoice_ids.state",
+    )
+    def _compute_invoice_untaxed_amount(self):
+        for rec in self:
+            if rec.state != "cancel" and rec.invoice_ids:
+                rec.invoiced_untaxed_amount = 0.0
+                for invoice in rec.invoice_ids:
+                    if invoice.state != "cancel":
+                        rec.invoiced_untaxed_amount += invoice.amount_untaxed_signed
+                rec.uninvoiced_untaxed_amount = max(0, rec.amount_untaxed - rec.invoiced_untaxed_amount)
+            else:
+                rec.invoiced_untaxed_amount = 0.0
+                if rec.state in ["draft", "sent", "cancel"]:
+                    rec.uninvoiced_untaxed_amount = 0.0
+                else:
+                    rec.uninvoiced_untaxed_amount = rec.amount_untaxed
diff --git a/sale_order_invoice_untaxed_amount/tests/__init__.py b/sale_order_invoice_untaxed_amount/tests/__init__.py
new file mode 100644
index 0000000..7dd777d
--- /dev/null
+++ b/sale_order_invoice_untaxed_amount/tests/__init__.py
@@ -0,0 +1 @@
+from . import test_sale_order_invoice_untaxed_amount
diff --git a/sale_order_invoice_untaxed_amount/tests/test_sale_order_invoice_untaxed_amount.py b/sale_order_invoice_untaxed_amount/tests/test_sale_order_invoice_untaxed_amount.py
new file mode 100644
index 0000000..baebf0c
--- /dev/null
+++ b/sale_order_invoice_untaxed_amount/tests/test_sale_order_invoice_untaxed_amount.py
@@ -0,0 +1,134 @@
+# Copyright (C) 2021 ForgeFlow S.L.
+# License LGPL-3.0 or later (https://www.gnu.org/licenses/lgpl.html)
+
+from odoo.tests import common
+
+
+class TestSaleOrderInvoiceUntaxedAmount(common.TransactionCase):
+    @classmethod
+    def setUpClass(cls):
+        super().setUpClass()
+
+        # Partners
+        cls.res_partner_1 = cls.env["res.partner"].create({"name": "Wood Corner"})
+
+        # Products
+        cls.product_1 = cls.env["product.product"].create(
+            {
+                "name": "Desk Combination",
+                "type": "consu",
+                "invoice_policy": "order",
+            }
+        )
+        cls.product_2 = cls.env["product.product"].create(
+            {
+                "name": "Conference Chair",
+                "type": "consu",
+                "invoice_policy": "order",
+            }
+        )
+        cls.product_3 = cls.env["product.product"].create(
+            {
+                "name": "Repair Services",
+                "type": "service",
+                "invoice_policy": "order",
+            }
+        )
+
+        # Sale Order
+        cls.tax = cls.env["account.tax"].create(
+            {"name": "Tax 21", "type_tax_use": "sale", "amount": 21}
+        )
+        cls.sale_order_1 = cls.env["sale.order"].create(
+            {"partner_id": cls.res_partner_1.id}
+        )
+        cls.order_line_1 = cls.env["sale.order.line"].create(
+            {
+                "order_id": cls.sale_order_1.id,
+                "product_id": cls.product_1.id,
+                "product_uom": cls.product_1.uom_id.id,
+                "product_uom_qty": 10.0,
+                "price_unit": 10.0,
+                "tax_id": [(6, 0, cls.tax.ids)],
+            }
+        )
+        cls.order_line_2 = cls.env["sale.order.line"].create(
+            {
+                "order_id": cls.sale_order_1.id,
+                "product_id": cls.product_2.id,
+                "product_uom": cls.product_2.uom_id.id,
+                "product_uom_qty": 25.0,
+                "price_unit": 4.0,
+                "tax_id": [(6, 0, cls.tax.ids)],
+            }
+        )
+        cls.order_line_3 = cls.env["sale.order.line"].create(
+            {
+                "order_id": cls.sale_order_1.id,
+                "product_id": cls.product_3.id,
+                "product_uom": cls.product_3.uom_id.id,
+                "product_uom_qty": 20.0,
+                "price_unit": 5.0,
+                "tax_id": [(6, 0, cls.tax.ids)],
+            }
+        )
+        # Total untaxed amount: 10*10 + 25*4 + 20*5 = 100 + 100 + 100 = 300
+
+    def test_untaxed_amount_without_invoice(self):
+        """No invoice yet: nothing invoiced, everything uninvoiced."""
+        self.assertEqual(self.sale_order_1.amount_untaxed, 300.0)
+        self.assertEqual(
+            self.sale_order_1.invoiced_untaxed_amount,
+            0.0,
+            "Invoiced Untaxed Amount should be 0.0 without invoice",
+        )
+        # Order still in draft: uninvoiced amount is forced to 0.0
+        self.assertEqual(
+            self.sale_order_1.uninvoiced_untaxed_amount,
+            0.0,
+            "Uninvoiced Untaxed Amount should be 0.0 while in draft",
+        )
+
+    def test_untaxed_amount_with_down_payment(self):
+        """A fixed down payment of 100 is invoiced."""
+        context_payment = {
+            "active_ids": [self.sale_order_1.id],
+            "active_id": self.sale_order_1.id,
+        }
+        payment = (
+            self.env["sale.advance.payment.inv"]
+            .with_context(context_payment)
+            .create({"advance_payment_method": "fixed", "fixed_amount": 100})
+        )
+        payment.create_invoices()
+
+        # The fixed down payment (100) is a tax-included amount.
+        # With a 21% tax, the invoiced untaxed amount is 100 / 1.21 = 82.64.
+        self.assertAlmostEqual(
+            self.sale_order_1.invoiced_untaxed_amount,
+            82.64,
+            places=2,
+            msg="Invoiced Untaxed Amount should be 82.64 (100 tax included / 1.21)",
+        )
+        self.assertAlmostEqual(
+            self.sale_order_1.uninvoiced_untaxed_amount,
+            217.36,
+            places=2,
+            msg="Uninvoiced Untaxed Amount should be 217.36 (300 - 82.64)",
+        )
+
+    def test_untaxed_amount_fully_invoiced(self):
+        """The whole order is invoiced: nothing remains uninvoiced."""
+        self.sale_order_1.action_confirm()
+        self.sale_order_1._create_invoices(final=True)
+
+        self.assertEqual(
+            self.sale_order_1.invoiced_untaxed_amount,
+            300.0,
+            "Invoiced Untaxed Amount should equal the full untaxed total",
+        )
+        self.assertEqual(
+            self.sale_order_1.uninvoiced_untaxed_amount,
+            0.0,
+            "Uninvoiced Untaxed Amount should be 0 once fully invoiced",
+        )
diff --git a/sale_order_invoice_untaxed_amount/views/sale_order_view.xml b/sale_order_invoice_untaxed_amount/views/sale_order_view.xml
new file mode 100644
index 0000000..d17433c
--- /dev/null
+++ b/sale_order_invoice_untaxed_amount/views/sale_order_view.xml
@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<odoo>
+    <record id="view_order_form_invoiced_untaxed_amount" model="ir.ui.view">
+        <field name="name">sale.order.form.invoiced.untaxed.amount</field>
+        <field name="model">sale.order</field>
+        <field name="inherit_id" ref="sale.view_order_form" />
+        <field name="arch" type="xml">
+            <group name="sale_total" position="after">
+                <group name="invoiced_untaxed" class="oe_subtotal_footer order-2 order-lg-2" colspan="2">
+                    <field name="invoiced_untaxed_amount" />
+                    <field name="uninvoiced_untaxed_amount" />
+                </group>
+            </group>
+        </field>
+    </record>
+    <record id="view_order_tree_invoiced_untaxed_amount" model="ir.ui.view">
+        <field name="name">sale.order.list.invoiced.untaxed.amount</field>
+        <field name="model">sale.order</field>
+        <field name="inherit_id" ref="sale.view_order_tree" />
+        <field name="arch" type="xml">
+            <xpath expr="//field[@name='amount_tax']" position="after">
+                <field name="invoiced_untaxed_amount" sum="Invoiced Untaxed Total" optional="hide" />
+                <field
+                    name="uninvoiced_untaxed_amount"
+                    sum="Uninvoiced Untaxed Total"
+                    optional="hide"
+                />
+            </xpath>
+        </field>
+    </record>
+</odoo>
\ No newline at end of file