diff --git a/sale_calc_discount_b2c/__init__.py b/sale_calc_discount_b2c/__init__.py
new file mode 100644
index 0000000..0650744
--- /dev/null
+++ b/sale_calc_discount_b2c/__init__.py
@@ -0,0 +1 @@
+from . import models
diff --git a/sale_calc_discount_b2c/__manifest__.py b/sale_calc_discount_b2c/__manifest__.py
new file mode 100644
index 0000000..c735c40
--- /dev/null
+++ b/sale_calc_discount_b2c/__manifest__.py
@@ -0,0 +1,14 @@
+# Copyright 2021 Criptomart
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+{
+    'name': 'Sale Calc Discount B2C',
+    'summary': 'When prices are tax included, calculates the discount in price excluding tax.',
+    'version': '12.0.1.0.0',
+    'author': 'Criptomart',
+    'depends': [
+        'sale',
+     ],
+    'installable': True,
+    'auto_install': False,
+    'application': False,
+}
diff --git a/sale_calc_discount_b2c/models/__init__.py b/sale_calc_discount_b2c/models/__init__.py
new file mode 100644
index 0000000..8a0dc04
--- /dev/null
+++ b/sale_calc_discount_b2c/models/__init__.py
@@ -0,0 +1 @@
+from . import sale
diff --git a/sale_calc_discount_b2c/models/sale.py b/sale_calc_discount_b2c/models/sale.py
new file mode 100644
index 0000000..4c359fb
--- /dev/null
+++ b/sale_calc_discount_b2c/models/sale.py
@@ -0,0 +1,32 @@
+# Copyright (C) 2021: Criptomart (<https://criptomart.net/>)
+# @author: Criptomart (<tech@criptomart.net>)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+#import logging
+
+from odoo import models, fields, api
+
+#_logger = logging.getLogger(__name__)
+
+class SaleOrderOrderLine(models.Model):
+    _inherit = 'sale.order.line'
+
+    @api.depends('product_uom_qty', 'discount', 'price_unit', 'tax_id')
+    def _compute_amount(self):
+        """
+        Compute the amounts of the SO line.
+        """
+        for line in self:
+
+          price = line.price_unit
+          taxes = line.tax_id.compute_all(price, line.order_id.currency_id, line.product_uom_qty, product=line.product_id, partner=line.order_id.partner_shipping_id)
+          if  line.discount:
+             price_disc = taxes['total_excluded'] * (1 - (line.discount or 0.0) / 100.0)
+             ctx = dict(self.env.context, force_price_include=False)
+             taxes = line.tax_id.with_context(ctx).compute_all(price_disc, line.order_id.currency_id, line.product_uom_qty, product=line.product_id, partner=line.order_id.partner_shipping_id)
+
+          line.update({
+                'price_tax': sum(t.get('amount', 0.0) for t in taxes.get('taxes', [])),
+                'price_total': taxes['total_included'],
+                'price_subtotal': taxes['total_excluded'],
+          })