diff --git a/addons/sale_project/models/project.py b/addons/sale_project/models/project.py
index 523fad6b108..94df2d0c965 100644
--- a/addons/sale_project/models/project.py
+++ b/addons/sale_project/models/project.py
@@ -1,6 +1,8 @@
 # -*- coding: utf-8 -*-
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
+from ast import literal_eval
+
 from odoo import api, fields, models, _
 from odoo.exceptions import ValidationError
 
@@ -38,6 +40,8 @@ class ProjectTask(models.Model):
         "and if this employee is not in the 'Employee/Sales Order Item Mapping' of the project, the "
         "timesheet entry will be linked to this sales order item.")
     project_sale_order_id = fields.Many2one('sale.order', string="project's sale order", related='project_id.sale_order_id')
+    invoice_count = fields.Integer("Number of invoices", related='sale_order_id.invoice_count')
+    task_to_invoice = fields.Boolean("To invoice", compute='_compute_task_to_invoice', search='_search_task_to_invoice', groups='sales_team.group_sale_salesman_all_leads')
 
     @api.depends('project_id.sale_line_id.order_partner_id')
     def _compute_partner_id(self):
@@ -96,3 +100,42 @@ class ProjectTask(models.Model):
         if partner:
             return partner
         return super().rating_get_partner_id()
+
+    @api.depends('sale_order_id.invoice_status', 'sale_order_id.order_line')
+    def _compute_task_to_invoice(self):
+        for task in self:
+            if task.sale_order_id:
+                task.task_to_invoice = bool(task.sale_order_id.invoice_status not in ('no', 'invoiced'))
+            else:
+                task.task_to_invoice = False
+
+    @api.model
+    def _search_task_to_invoice(self, operator, value):
+        query = """
+            SELECT so.id
+            FROM sale_order so
+            WHERE so.invoice_status != 'invoiced'
+                AND so.invoice_status != 'no'
+        """
+        operator_new = 'inselect'
+        if(bool(operator == '=') ^ bool(value)):
+            operator_new = 'not inselect'
+        return [('sale_order_id', operator_new, (query, ()))]
+
+    def action_create_invoice(self):
+        # ensure the SO exists before invoicing, then confirm it
+        so_to_confirm = self.filtered(
+            lambda task: task.sale_order_id and task.sale_order_id.state in ['draft', 'sent']
+        ).mapped('sale_order_id')
+        so_to_confirm.action_confirm()
+
+        # redirect create invoice wizard (of the Sales Order)
+        action = self.env.ref('sale.action_view_sale_advance_payment_inv').read()[0]
+        context = literal_eval(action.get('context', "{}"))
+        context.update({
+            'active_id': self.sale_order_id.id if len(self) == 1 else False,
+            'active_ids': self.mapped('sale_order_id').ids,
+            'default_company_id': self.company_id.id,
+        })
+        action['context'] = context
+        return action
diff --git a/addons/sale_project/views/project_task_views.xml b/addons/sale_project/views/project_task_views.xml
index 4ccd0f8b9c9..d45fdd10d26 100644
--- a/addons/sale_project/views/project_task_views.xml
+++ b/addons/sale_project/views/project_task_views.xml
@@ -56,6 +56,22 @@
             <xpath expr="//field[@name='stage_id']" position="before">
                 <field name="sale_order_id" string="Sale Order" filter_domain="['|', ('sale_order_id', 'ilike', self), ('sale_line_id', 'ilike', self)]"/>
             </xpath>
+            <filter name="inactive" position="before">
+                <filter string="To Invoice" name="to_invoice" domain="[('task_to_invoice', '=', True)]" groups="sales_team.group_sale_salesman" />
+                <separator/>
+            </filter>
+        </field>
+    </record>
+
+    <!-- To invoice batch action -->
+    <record id="project_task_server_action_batch_invoice" model="ir.actions.server">
+        <field name="name">Create invoice</field>
+        <field name="model_id" ref="project.model_project_task"/>
+        <field name="binding_model_id" ref="project.model_project_task"/>
+        <field name="state">code</field>
+        <field name="code">
+            if records:
+                action = records.action_create_invoice()
         </field>
     </record>