diff --git a/addons/sale/i18n/sale.pot b/addons/sale/i18n/sale.pot
index 50585f72ac1..1c951b42789 100644
--- a/addons/sale/i18n/sale.pot
+++ b/addons/sale/i18n/sale.pot
@@ -1722,6 +1722,11 @@ msgstr ""
 msgid "Group By"
 msgstr ""
 
+#. module: sale
+#: model:ir.model.fields,field_description:sale.field_sale_order__show_update_fpos
+msgid "Has Fiscal Position Changed"
+msgstr ""
+
 #. module: sale
 #: model:ir.model.fields,field_description:sale.field_sale_order__has_message
 msgid "Has Message"
@@ -2818,6 +2823,13 @@ msgstr ""
 msgid "Product prices have been recomputed according to pricelist %s."
 msgstr ""
 
+#. module: sale
+#: code:addons/sale/models/sale_order.py:0
+#, python-format
+msgid ""
+"Product taxes have been recomputed according to fiscal position <b>%s<b>."
+msgstr ""
+
 #. module: sale
 #: model_terms:ir.ui.view,arch_db:sale.res_config_settings_view_form
 msgid "Product used for down payments"
@@ -3014,6 +3026,11 @@ msgstr ""
 msgid "Recompute all prices based on this pricelist"
 msgstr ""
 
+#. module: sale
+#: model_terms:ir.ui.view,arch_db:sale.view_order_form
+msgid "Recompute all taxes based on this fiscal position"
+msgstr ""
+
 #. module: sale
 #: code:addons/sale/controllers/portal.py:0
 #, python-format
@@ -3698,6 +3715,13 @@ msgid ""
 "Tech field caching pricelist rule used for price & discount computation"
 msgstr ""
 
+#. module: sale
+#: model:ir.model.fields,help:sale.field_sale_order__show_update_fpos
+msgid ""
+"Technical Field, True if the fiscal position was changed;\n"
+" this will then display a recomputation button"
+msgstr ""
+
 #. module: sale
 #: model:ir.model.fields,help:sale.field_sale_order__show_update_pricelist
 msgid ""
@@ -3997,6 +4021,12 @@ msgid ""
 "Invoice Analysis report in the Accounting application."
 msgstr ""
 
+#. module: sale
+#: model_terms:ir.ui.view,arch_db:sale.view_order_form
+msgid ""
+"This will update all taxes based on the currently selected fiscal position."
+msgstr ""
+
 #. module: sale
 #: model_terms:ir.ui.view,arch_db:sale.view_order_form
 msgid "This will update all unit prices based on the currently set pricelist."
@@ -4194,6 +4224,11 @@ msgstr ""
 msgid "Update Prices"
 msgstr ""
 
+#. module: sale
+#: model_terms:ir.ui.view,arch_db:sale.view_order_form
+msgid "Update Taxes"
+msgstr ""
+
 #. module: sale
 #: code:addons/sale/models/sale_order.py:0
 #, python-format
diff --git a/addons/sale/models/sale_order.py b/addons/sale/models/sale_order.py
index 60ae6f15818..b9961bfcf7c 100644
--- a/addons/sale/models/sale_order.py
+++ b/addons/sale/models/sale_order.py
@@ -192,6 +192,10 @@ class SaleOrder(models.Model):
         digits=(12, 6),
         store=True, precompute=True,
         help='The rate of the currency to the currency of rate 1 applicable at the date of the order')
+    show_update_fpos = fields.Boolean(
+        string="Has Fiscal Position Changed", store=False,
+        help="Technical Field, True if the fiscal position was changed;\n"
+             " this will then display a recomputation button")
     show_update_pricelist = fields.Boolean(
         string="Has Pricelist Changed",
         help="Technical Field, True if the pricelist was changed;\n"
@@ -624,6 +628,14 @@ class SaleOrder(models.Model):
                 updated_credit = order.partner_id.credit + (order.amount_total * order.currency_rate)
                 order.partner_credit_warning = self.env['account.move']._build_credit_warning_message(order, updated_credit)
 
+    @api.onchange('fiscal_position_id')
+    def _onchange_fpos_id_show_update_fpos(self):
+        if self.order_line and (
+            not self.fiscal_position_id
+            or (self.fiscal_position_id and self._origin.fiscal_position_id != self.fiscal_position_id)
+        ):
+            self.show_update_fpos = True
+
     @api.onchange('partner_id')
     def _onchange_partner_id_warning(self):
         if not self.partner_id:
@@ -856,6 +868,17 @@ class SaleOrder(models.Model):
             return False
         return any(so.state != 'draft' for so in self)
 
+    def action_update_taxes(self):
+        self.ensure_one()
+        lines_to_recompute = self.order_line.filtered(lambda line: not line.display_type)
+        lines_to_recompute._compute_tax_id()
+        self.show_update_fpos = False
+        if self.partner_id and self.id:
+            self.message_post(body=_(
+                "Product taxes have been recomputed according to fiscal position %s.",
+                self.fiscal_position_id._get_html_link() if self.fiscal_position_id else "",
+            ))
+
     def update_prices(self):
         self.ensure_one()
         lines_to_recompute = self.order_line.filtered(lambda line: not line.display_type)
diff --git a/addons/sale/views/sale_order_views.xml b/addons/sale/views/sale_order_views.xml
index a1d9dbafa36..fc2e7615099 100644
--- a/addons/sale/views/sale_order_views.xml
+++ b/addons/sale/views/sale_order_views.xml
@@ -590,7 +590,17 @@
                                 <field name="tag_ids" widget="many2many_tags" options="{'color_field': 'color', 'no_create_edit': True}"/>
                             </group>
                             <group name="sale_info" string="Invoicing and Payments">
-                                <field name="fiscal_position_id" options="{'no_create': True}"/>
+                                <field name="show_update_fpos" invisible="1"/>
+                                <label for="fiscal_position_id"/>
+                                <div class="o_row">
+                                    <field name="fiscal_position_id" options="{'no_create': True}"/>
+                                    <button name="action_update_taxes" type="object"
+                                        string=" Update Taxes"
+                                        help="Recompute all taxes based on this fiscal position"
+                                        class="btn-link mb-1 px-0" icon="fa-refresh"
+                                        confirm="This will update all taxes based on the currently selected fiscal position."
+                                        attrs="{'invisible': ['|', ('show_update_fpos', '=', False), ('state', 'in', ['sale', 'done','cancel'])]}"/>
+                                </div>
                                 <field name="analytic_account_id" context="{'default_partner_id':partner_invoice_id, 'default_name':name}" attrs="{'readonly': [('invoice_count','!=',0),('state','=','sale')]}" groups="analytic.group_analytic_accounting" force_save="1"/>
                                 <field name="invoice_status" states="sale,done" groups="base.group_no_one"/>
                             </group>