diff --git a/project_sale_usability/README.rst b/project_sale_usability/README.rst
new file mode 100644
index 00000000..89ba4999
--- /dev/null
+++ b/project_sale_usability/README.rst
@@ -0,0 +1,28 @@
+.. image:: https://img.shields.io/badge/license-AGPL--3-blue.png
+   :target: https://www.gnu.org/licenses/agpl
+   :alt: License: AGPL-3
+
+======================
+Project Sale Usability
+======================
+
+With this module you can access to customer invoices related to the project.
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues
+<https://github.com/avanzosc/project-addons/issues>`_. In case of trouble, please
+check there if your issue has already been reported. If you spotted it first,
+help us smash it by providing detailed and welcomed feedback.
+
+Do not contact contributors directly about support or help with technical issues.
+
+Credits
+=======
+
+Contributors
+------------
+
+* Oihane Crucelaegui <oihanecrucelaegi@avanzosc.es>
+* Ana Juaristi <anajuaristi@avanzosc.es>
diff --git a/project_sale_usability/__init__.py b/project_sale_usability/__init__.py
new file mode 100644
index 00000000..0650744f
--- /dev/null
+++ b/project_sale_usability/__init__.py
@@ -0,0 +1 @@
+from . import models
diff --git a/project_sale_usability/__manifest__.py b/project_sale_usability/__manifest__.py
new file mode 100644
index 00000000..68c246e5
--- /dev/null
+++ b/project_sale_usability/__manifest__.py
@@ -0,0 +1,21 @@
+# Copyright 2020 Oihane Crucelaegui - AvanzOSC
+# License AGPL-3 - See http://www.gnu.org/licenses/agpl-3.0.html
+
+{
+    "name": "Project Sale Usability",
+    "version": "18.0.1.0.0",
+    "license": "AGPL-3",
+    "depends": [
+        "project",
+        "sale",
+        "sales_team",
+        "sale_project",
+    ],
+    "author": "AvanzOSC",
+    "website": "https://github.com/avanzosc/project-addons",
+    "category": "Hidden",
+    "data": [
+        "views/project_project_view.xml",
+    ],
+    "installable": True,
+}
diff --git a/project_sale_usability/i18n/es.po b/project_sale_usability/i18n/es.po
new file mode 100644
index 00000000..4a68ea9e
--- /dev/null
+++ b/project_sale_usability/i18n/es.po
@@ -0,0 +1,63 @@
+# Translation of Odoo Server.
+# This file contains the translation of the following modules:
+# 	* project_sale_usability
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Odoo Server 18.0\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2023-10-09 12:11+0000\n"
+"PO-Revision-Date: 2023-10-09 12:11+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: project_sale_usability
+#: model:ir.model.fields,field_description:project_sale_usability.field_project_project__out_invoice_count
+msgid "# Sale Invoice"
+msgstr "N.º de facturas de venta"
+
+#. module: project_sale_usability
+#: model:ir.model.fields,field_description:project_sale_usability.field_project_project__out_refund_count
+msgid "# Sale Refund"
+msgstr "N.º de rectificativas de venta"
+
+#. module: project_sale_usability
+#. odoo-python
+#: code:addons/project_sale_usability/models/project_project.py:0
+#: model_terms:ir.ui.view,arch_db:project_sale_usability.project_project_view_form
+#, python-format
+msgid "Out Invoice Lines"
+msgstr "Lineas de facturas de venta"
+
+#. module: project_sale_usability
+#: model:ir.model.fields,field_description:project_sale_usability.field_project_project__out_invoiced
+msgid "Out Invoiced"
+msgstr "Facturado en ventas"
+
+#. module: project_sale_usability
+#: model_terms:ir.ui.view,arch_db:project_sale_usability.project_project_view_form
+msgid "Out Invoices"
+msgstr "Facturas de venta"
+
+#. module: project_sale_usability
+#: model:ir.model.fields,field_description:project_sale_usability.field_project_project__out_refund
+#: model_terms:ir.ui.view,arch_db:project_sale_usability.project_project_view_form
+msgid "Out Refund"
+msgstr "Rectificado en venta"
+
+#. module: project_sale_usability
+#. odoo-python
+#: code:addons/project_sale_usability/models/project_project.py:0
+#: model_terms:ir.ui.view,arch_db:project_sale_usability.project_project_view_form
+#, python-format
+msgid "Out Refund Lines"
+msgstr "Lineas de rectificadas de venta"
+
+#. module: project_sale_usability
+#: model:ir.model,name:project_sale_usability.model_project_project
+msgid "Project"
+msgstr "Proyecto"
diff --git a/project_sale_usability/i18n/project_sale_usability.pot b/project_sale_usability/i18n/project_sale_usability.pot
new file mode 100644
index 00000000..9dba2984
--- /dev/null
+++ b/project_sale_usability/i18n/project_sale_usability.pot
@@ -0,0 +1,63 @@
+# Translation of Odoo Server.
+# This file contains the translation of the following modules:
+# 	* project_sale_usability
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Odoo Server 18.0\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2023-10-09 12:10+0000\n"
+"PO-Revision-Date: 2023-10-09 12:10+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: project_sale_usability
+#: model:ir.model.fields,field_description:project_sale_usability.field_project_project__out_invoice_count
+msgid "# Sale Invoice"
+msgstr ""
+
+#. module: project_sale_usability
+#: model:ir.model.fields,field_description:project_sale_usability.field_project_project__out_refund_count
+msgid "# Sale Refund"
+msgstr ""
+
+#. module: project_sale_usability
+#. odoo-python
+#: code:addons/project_sale_usability/models/project_project.py:0
+#: model_terms:ir.ui.view,arch_db:project_sale_usability.project_project_view_form
+#, python-format
+msgid "Out Invoice Lines"
+msgstr ""
+
+#. module: project_sale_usability
+#: model:ir.model.fields,field_description:project_sale_usability.field_project_project__out_invoiced
+msgid "Out Invoiced"
+msgstr ""
+
+#. module: project_sale_usability
+#: model_terms:ir.ui.view,arch_db:project_sale_usability.project_project_view_form
+msgid "Out Invoices"
+msgstr ""
+
+#. module: project_sale_usability
+#: model:ir.model.fields,field_description:project_sale_usability.field_project_project__out_refund
+#: model_terms:ir.ui.view,arch_db:project_sale_usability.project_project_view_form
+msgid "Out Refund"
+msgstr ""
+
+#. module: project_sale_usability
+#. odoo-python
+#: code:addons/project_sale_usability/models/project_project.py:0
+#: model_terms:ir.ui.view,arch_db:project_sale_usability.project_project_view_form
+#, python-format
+msgid "Out Refund Lines"
+msgstr ""
+
+#. module: project_sale_usability
+#: model:ir.model,name:project_sale_usability.model_project_project
+msgid "Project"
+msgstr ""
diff --git a/project_sale_usability/models/__init__.py b/project_sale_usability/models/__init__.py
new file mode 100644
index 00000000..56545d0d
--- /dev/null
+++ b/project_sale_usability/models/__init__.py
@@ -0,0 +1 @@
+from . import project_project
diff --git a/project_sale_usability/models/project_project.py b/project_sale_usability/models/project_project.py
new file mode 100644
index 00000000..74baa16a
--- /dev/null
+++ b/project_sale_usability/models/project_project.py
@@ -0,0 +1,144 @@
+# Copyright 2020 Oihane Crucelaegui - AvanzOSC
+# License AGPL-3 - See http://www.gnu.org/licenses/agpl-3.0.html
+
+from odoo import _, fields, models
+from odoo.osv import expression
+from odoo.tools.safe_eval import safe_eval
+
+
+class ProjectProject(models.Model):
+    _inherit = "project.project"
+
+    out_invoice_count = fields.Integer(
+        compute="_compute_out_invoiced", string="# Sale Invoice"
+    )
+    out_invoiced = fields.Monetary(compute="_compute_out_invoiced")
+    out_refund_count = fields.Integer(
+        compute="_compute_out_refund", string="# Sale Refund"
+    )
+    out_refund = fields.Monetary(compute="_compute_out_refund")
+
+    def _domain_sale_invoice_line(self):
+        query = self.env["account.move.line"]._search(
+            [
+                ("move_id.state", "!=", "cancel"),
+                ("move_id.move_type", "in", ["out_invoice", "out_refund"]),
+            ]
+        )
+        # check if analytic_distribution contains id of analytic account
+        query.add_where(
+            "account_move_line.analytic_distribution ?| array[%s]",
+            [str(project.account_id.id) for project in self if project.account_id],
+        )
+        query.order = None
+        query_string, query_param = query.select(
+            "account_move_line.id as id",
+        )
+        self._cr.execute(query_string, query_param)
+        purchase_invoice_lines_ids = [
+            int(record.get("id")) for record in self._cr.dictfetchall()
+        ]
+        domain = [("id", "in", purchase_invoice_lines_ids)]
+        return domain
+
+    def _get_out_invoiced(self, domain=False):
+        filter_domain = expression.AND(
+            [
+                [("move_id.move_type", "=", "out_invoice")],
+                self._domain_sale_invoice_line(),
+            ]
+        )
+        if domain:
+            return filter_domain
+        invoice_lines = self.env["account.move.line"].search(filter_domain)
+        return invoice_lines
+
+    def _get_out_refund(self, domain=False):
+        filter_domain = expression.AND(
+            [
+                [("move_id.move_type", "=", "out_refund")],
+                self._domain_sale_invoice_line(),
+            ]
+        )
+        if domain:
+            return filter_domain
+        invoice_lines = self.env["account.move.line"].search(filter_domain)
+        return invoice_lines
+
+    def _compute_out_invoiced(self):
+        for project in self:
+            lines = project._get_out_invoiced()
+            project.out_invoiced = sum(lines.mapped("price_subtotal"))
+            project.out_invoice_count = len(lines.mapped("move_id"))
+
+    def _compute_out_refund(self):
+        for project in self:
+            lines = project._get_out_refund()
+            project.out_refund = sum(lines.mapped("price_subtotal"))
+            project.out_refund_count = len(lines.mapped("move_id"))
+
+    def button_open_out_invoice(self):
+        self.ensure_one()
+        lines = self._get_out_invoiced()
+        action = self.env["ir.actions.actions"]._for_xml_id(
+            "account.action_move_out_invoice_type"
+        )
+        domain = expression.AND(
+            [
+                [("id", "in", lines.mapped("move_id").ids)],
+                safe_eval(action.get("domain") or "[]"),
+            ]
+        )
+        context = safe_eval(action.get("context") or "{}")
+        context.update({"group_by": ["payment_state"]})
+        action.update(
+            {
+                "domain": domain,
+                "context": context,
+            }
+        )
+        return action
+
+    def button_open_out_refund(self):
+        self.ensure_one()
+        lines = self._get_out_refund()
+        action = self.env["ir.actions.actions"]._for_xml_id(
+            "account.action_move_out_refund_type"
+        )
+        domain = expression.AND(
+            [
+                [("id", "in", lines.mapped("move_id").ids)],
+                safe_eval(action.get("domain") or "[]"),
+            ]
+        )
+        context = safe_eval(action.get("context") or "{}")
+        context.update({"group_by": ["payment_state"]})
+        action.update(
+            {
+                "domain": domain,
+                "context": context,
+            }
+        )
+        return action
+
+    def button_open_out_invoice_line(self):
+        self.ensure_one()
+        domain = self._get_out_invoiced(domain=True)
+        return {
+            "name": _("Out Invoice Lines"),
+            "domain": domain,
+            "type": "ir.actions.act_window",
+            "view_mode": "tree",
+            "res_model": "account.move.line",
+        }
+
+    def button_open_out_refund_line(self):
+        self.ensure_one()
+        domain = self._get_out_refund(domain=True)
+        return {
+            "name": _("Out Refund Lines"),
+            "domain": domain,
+            "type": "ir.actions.act_window",
+            "view_mode": "tree",
+            "res_model": "account.move.line",
+        }
diff --git a/project_sale_usability/pyproject.toml b/project_sale_usability/pyproject.toml
new file mode 100644
index 00000000..4231d0cc
--- /dev/null
+++ b/project_sale_usability/pyproject.toml
@@ -0,0 +1,3 @@
+[build-system]
+requires = ["whool"]
+build-backend = "whool.buildapi"
diff --git a/project_sale_usability/tests/__init__.py b/project_sale_usability/tests/__init__.py
new file mode 100644
index 00000000..f2d533d1
--- /dev/null
+++ b/project_sale_usability/tests/__init__.py
@@ -0,0 +1 @@
+from . import test_project_sale_utilities
diff --git a/project_sale_usability/tests/test_project_sale_utilities.py b/project_sale_usability/tests/test_project_sale_utilities.py
new file mode 100644
index 00000000..aac62bc3
--- /dev/null
+++ b/project_sale_usability/tests/test_project_sale_utilities.py
@@ -0,0 +1,98 @@
+# Copyright 2020 Oihane Crucelaegui - AvanzOSC
+# License AGPL-3 - See http://www.gnu.org/licenses/agpl-3.0.html
+
+from collections import OrderedDict
+
+from odoo.osv import expression
+from odoo.tests import common, tagged
+from odoo.tools.safe_eval import safe_eval
+
+
+@tagged("post_install", "-at_install")
+class TestProjectSaleUtilities(common.TransactionCase):
+    @classmethod
+    def setUpClass(cls):
+        super().setUpClass()
+        cls.products = OrderedDict(
+            [
+                ("prod_order", cls.env.ref("product.product_order_01")),
+                ("prod_del", cls.env.ref("product.product_delivery_01")),
+            ]
+        )
+        cls.partner = cls.env["res.partner"].create(
+            {
+                "name": "Test Customer",
+            }
+        )
+        cls.project = cls.env["project.project"].create(
+            {
+                "name": "Test Project",
+                "partner_id": cls.partner.id,
+            }
+        )
+        cls.project._create_analytic_account()
+        cls.sale_model = cls.env["sale.order"]
+        cls.sale = cls.sale_model.create(
+            {
+                "partner_id": cls.partner.id,
+                "analytic_account_id": cls.project.analytic_account_id.id,
+                "order_line": [
+                    (
+                        0,
+                        0,
+                        {
+                            "name": p.name,
+                            "product_id": p.id,
+                            "product_uom_qty": 2,
+                            "product_uom": p.uom_id.id,
+                            "price_unit": p.list_price,
+                        },
+                    )
+                    for p in cls.products.values()
+                ],
+            }
+        )
+        cls.invoice_model = cls.env["account.move"]
+
+    def test_project_sale_out_invoice(self):
+        inv = self.create_invoice_from_sale_order()
+        self.assertEqual(self.project.out_invoice_count, 1.0)
+        self.assertEqual(
+            self.project.out_invoiced,
+            sum(inv.mapped("invoice_line_ids.price_subtotal")),
+        )
+        line_domain = [
+            (
+                "analytic_distribution",
+                "in",
+                self.project.mapped("analytic_account_id").ids,
+            ),
+            ("move_id.move_type", "=", "out_invoice"),
+        ]
+        invoice_lines = self.env["account.move.line"].search(line_domain)
+        invoice_action = self.browse_ref("account.action_move_out_invoice_type")
+        invoice_domain = expression.AND(
+            [
+                [("id", "in", invoice_lines.mapped("move_id").ids)],
+                safe_eval(invoice_action.domain or "[]"),
+            ]
+        )
+        invoice_dict = self.project.button_open_out_invoice()
+        self.assertEqual(invoice_dict.get("domain"), invoice_domain)
+        invoice_line_domain = self.project._get_out_invoiced(domain=True)
+        invoice_line_dict = self.project.button_open_out_invoice_line()
+        self.assertEqual(invoice_line_dict.get("domain"), invoice_line_domain)
+
+    def create_invoice_from_sale_order(self):
+        self.assertTrue(self.sale.state == "draft")
+        self.sale.action_confirm()
+        self.assertTrue(self.sale.state == "sale")
+        self.assertTrue(self.sale.invoice_status == "to invoice")
+        inv = self.sale._create_invoices()
+        self.assertTrue(
+            self.sale.invoice_status == "no",
+            'Sale: SO status after invoicing should be "nothing to invoice"',
+        )
+        self.assertEqual(len(inv.invoice_line_ids), 1, "Sale: invoice is missing lines")
+        self.assertTrue(len(self.sale.invoice_ids) == 1, "Sale: invoice is missing")
+        return inv
diff --git a/project_sale_usability/views/project_project_view.xml b/project_sale_usability/views/project_project_view.xml
new file mode 100644
index 00000000..8ad73aa4
--- /dev/null
+++ b/project_sale_usability/views/project_project_view.xml
@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<odoo>
+  <record id="project_project_view_form" model="ir.ui.view">
+    <field name="model">project.project</field>
+    <field name="inherit_id" ref="project.edit_project" />
+    <field name="arch" type="xml">
+      <div name="button_box" position="inside">
+        <button
+          class="oe_stat_button"
+          name="button_open_out_invoice"
+          type="object"
+          icon="fa-pencil-square-o"
+          groups="sales_team.group_sale_salesman"
+        >
+          <field string="Out Invoices" name="out_invoice_count" widget="statinfo" />
+        </button>
+        <button
+          class="oe_stat_button"
+          name="button_open_out_invoice_line"
+          type="object"
+          icon="fa-pencil-square-o"
+          groups="sales_team.group_sale_salesman"
+        >
+          <field string="Out Invoice Lines" name="out_invoiced" widget="statinfo" />
+        </button>
+        <button
+          class="oe_stat_button"
+          name="button_open_out_refund"
+          type="object"
+          icon="fa-pencil-square-o"
+          groups="sales_team.group_sale_salesman"
+        >
+          <field string="Out Refund" name="out_refund_count" widget="statinfo" />
+        </button>
+        <button
+          class="oe_stat_button"
+          name="button_open_out_refund_line"
+          type="object"
+          icon="fa-pencil-square-o"
+          groups="sales_team.group_sale_salesman"
+        >
+          <field string="Out Refund Lines" name="out_refund" widget="statinfo" />
+        </button>
+      </div>
+    </field>
+  </record>
+</odoo>