diff --git a/addons/account/models/account_tax.py b/addons/account/models/account_tax.py
index f429629b087..dab9587751b 100644
--- a/addons/account/models/account_tax.py
+++ b/addons/account/models/account_tax.py
@@ -114,7 +114,6 @@ class AccountTax(models.Model):
     sequence = fields.Integer(required=True, default=1,
         help="The sequence field is used to define order in which the tax lines are applied.")
     amount = fields.Float(required=True, digits=(16, 4), default=0.0)
-    real_amount = fields.Float(string='Real amount to apply', compute='_compute_real_amount', store=True)
     description = fields.Char(string='Label on Invoices')
     price_include = fields.Boolean(string='Included in Price', default=False,
         help="Check this if the price you use on the product and invoices includes this tax.")
@@ -321,13 +320,6 @@ class AccountTax(models.Model):
         if self.price_include:
             self.include_base_amount = True
 
-    @api.depends('invoice_repartition_line_ids', 'amount', 'invoice_repartition_line_ids.factor')
-    def _compute_real_amount(self):
-        for tax in self:
-            tax_repartition_lines = tax.invoice_repartition_line_ids.filtered(lambda x: x.repartition_type == 'tax')
-            total_factor = sum(tax_repartition_lines.mapped('factor'))
-            tax.real_amount = tax.amount * total_factor
-
     def _compute_amount(self, base_amount, price_unit, quantity=1.0, product=None, partner=None, fixed_multiplicator=1):
         """ Returns the amount of a single tax. base_amount is the actual amount on which the tax is applied, which is
             price_unit * quantity eventually affected by previous taxes (if tax is include_base_amount XOR price_include)
diff --git a/addons/point_of_sale/models/pos_session.py b/addons/point_of_sale/models/pos_session.py
index 6378fd9acee..0363e667eb3 100644
--- a/addons/point_of_sale/models/pos_session.py
+++ b/addons/point_of_sale/models/pos_session.py
@@ -1716,18 +1716,26 @@ class PosSession(models.Model):
             'search_params': {
                 'domain': [('company_id', '=', self.company_id.id)],
                 'fields': [
-                    'name', 'real_amount', 'price_include', 'include_base_amount', 'is_base_affected',
-                    'amount_type', 'children_tax_ids'
+                    'name', 'price_include', 'include_base_amount', 'is_base_affected',
+                    'amount_type', 'children_tax_ids', 'amount', 'id'
                 ],
             },
         }
 
     def _get_pos_ui_account_tax(self, params):
         taxes = self.env['account.tax'].search_read(**params['search_params'])
-        # TODO: rename amount to real_amount in front end
+
+        # Add the 'sum_repartition_factor' as needed in the compute_all
+        # Note that the factor = factor_percent/100
+        groups = self.env['account.tax.repartition.line'].read_group(
+            domain=[('invoice_tax_id', 'in', tuple([t['id'] for t in taxes])), ('repartition_type', '=', 'tax')],
+            fields=["factor_percent:sum"],
+            groupby=["invoice_tax_id"],
+        )
+        tax_id_to_factor_sum = {g['invoice_tax_id'][0]: g['factor_percent']/100 for g in groups}
         for tax in taxes:
-            tax['amount'] = tax['real_amount']
-            del tax['real_amount']
+            tax['sum_repartition_factor'] = tax_id_to_factor_sum[tax['id']]
+
         return taxes
 
     def _loader_params_pos_session(self):
diff --git a/addons/point_of_sale/static/src/js/models.js b/addons/point_of_sale/static/src/js/models.js
index 297925478c8..44ef48be33c 100644
--- a/addons/point_of_sale/static/src/js/models.js
+++ b/addons/point_of_sale/static/src/js/models.js
@@ -1197,11 +1197,11 @@ export class PosGlobalState extends PosModel {
                 }
                 if (tax.price_include) {
                     if (tax.amount_type === "percent") {
-                        incl_percent_amount += tax.amount;
+                        incl_percent_amount += tax.amount * tax.sum_repartition_factor;
                     } else if (tax.amount_type === "division") {
-                        incl_division_amount += tax.amount;
+                        incl_division_amount += tax.amount * tax.sum_repartition_factor;
                     } else if (tax.amount_type === "fixed") {
-                        incl_fixed_amount += Math.abs(quantity) * tax.amount;
+                        incl_fixed_amount += Math.abs(quantity) * tax.amount * tax.sum_repartition_factor;
                     } else {
                         var tax_amount = self._compute_all(tax, base, quantity);
                         incl_fixed_amount += tax_amount;
@@ -1241,7 +1241,8 @@ export class PosGlobalState extends PosModel {
             if (
                 !skip_checkpoint &&
                 tax.price_include &&
-                total_included_checkpoints[i] !== undefined
+                total_included_checkpoints[i] !== undefined &&
+                tax.sum_repartition_factor != 0
             ) {
                 var tax_amount =
                     total_included_checkpoints[i] - (base + cumulated_tax_included_amount);
@@ -1251,26 +1252,27 @@ export class PosGlobalState extends PosModel {
             }
 
             tax_amount = round_pr(tax_amount, currency_rounding);
+            var factorized_tax_amount = round_pr(tax_amount * tax.sum_repartition_factor, currency_rounding)
 
             if (tax.price_include && total_included_checkpoints[i] === undefined) {
-                cumulated_tax_included_amount += tax_amount;
+                cumulated_tax_included_amount += factorized_tax_amount;
             }
 
             taxes_vals.push({
                 id: tax.id,
                 name: tax.name,
-                amount: sign * tax_amount,
+                amount: sign * factorized_tax_amount,
                 base: sign * round_pr(tax_base_amount, currency_rounding),
             });
 
             if (tax.include_base_amount) {
-                base += tax_amount;
+                base += factorized_tax_amount;
                 if (!tax.price_include) {
                     skip_checkpoint = true;
                 }
             }
 
-            total_included += tax_amount;
+            total_included += factorized_tax_amount;
             i += 1;
         });