diff --git a/modules/account_es_sii/account.py b/modules/account_es_sii/account.py
index 5cfa8d6a66..f6e1d6c3c0 100644
--- a/modules/account_es_sii/account.py
+++ b/modules/account_es_sii/account.py
@@ -486,6 +486,18 @@ class InvoiceSII(ModelSQL, ModelView):
             ('operation_key', tax.es_sii_operation_key or ''),
             ('excluded', tax.es_exclude_from_sii),
             ('product_key', product_type),
+            )
+
+    @classmethod
+    def tax_detail_grouping_key(cls, tax_line):
+        if not tax_line.tax:
+            return tuple()
+        tax = tax_line.tax
+        if tax.es_reported_with:
+            tax = tax.es_reported_with
+        if not tax.es_sii_operation_key:
+            return tuple()
+        return (
             ('rate', tax.rate * 100),
             )
 
@@ -620,18 +632,21 @@ class InvoiceSII(ModelSQL, ModelView):
         tax_amount = Decimal(0)
         for tax_key, tax_lines in groupby(
                 tax_lines, key=self.tax_grouping_key):
-            key = dict(tax_key)
-            values = self.get_tax_values(key, list(tax_lines))
-            if not values:
-                continue
-            operation_keys.add(key['operation_key'])
-            tax_amount += values["Cuota%s" % key['cuota_suffix']]
-            total_amount += (
-                values['BaseImponible']
-                + values["Cuota%s" % key['cuota_suffix']])
-            if 'CuotaRecargoEquivalencia' in values:
-                total_amount += values['CuotaRecargoEquivalencia']
-            tax_values[tax_key].append(values)
+            tax_lines = sorted(tax_lines, key=self.tax_detail_grouping_key)
+            for detail_key, tax_lines in groupby(
+                    tax_lines, key=self.tax_detail_grouping_key):
+                key = dict(tax_key + detail_key)
+                values = self.get_tax_values(key, list(tax_lines))
+                if not values:
+                    continue
+                operation_keys.add(key['operation_key'])
+                tax_amount += values["Cuota%s" % key['cuota_suffix']]
+                total_amount += (
+                    values['BaseImponible']
+                    + values["Cuota%s" % key['cuota_suffix']])
+                if 'CuotaRecargoEquivalencia' in values:
+                    total_amount += values['CuotaRecargoEquivalencia']
+                tax_values[tax_key].append(values)
         return self.get_invoice_detail(
             tax_values, operation_keys, total_amount, tax_amount)
 
diff --git a/modules/account_es_sii/tests/test_module.py b/modules/account_es_sii/tests/test_module.py
index 2a56543a8a..cc8268d983 100644
--- a/modules/account_es_sii/tests/test_module.py
+++ b/modules/account_es_sii/tests/test_module.py
@@ -362,6 +362,58 @@ class AccountEsSiiTestCase(ModuleTestCase):
                 payload['FacturaExpedida']['TipoDesglose']['DesgloseFactura'][
                     'Sujeta'][0]['NoExenta']['DesgloseIVA'], tax_detail)
 
+    @with_transaction()
+    def test_customer_invoice_multiple_taxes_sii_payload(self):
+        "Test Customer Invoice Multiple Taxes SII Payload"
+        pool = Pool()
+        FiscalYear = pool.get('account.fiscalyear')
+        Tax = pool.get('account.tax')
+        company = create_company()
+        with set_company(company):
+            create_chart(company, chart='account_es.pgc_0_pyme')
+            fiscalyear = set_invoice_sequences(get_fiscalyear(company))
+            fiscalyear.save()
+            FiscalYear.create_period([fiscalyear])
+            fiscalyear.es_sii_send_invoices = True
+            fiscalyear.save()
+            fiscalyear.es_sii_send_invoices = True
+
+            party = create_party('Customer', 'eu_vat', 'ES00000000T')
+            normal_tax, = Tax.search([
+                    ('company', '=', company.id),
+                    ('name', '=', 'IVA 21% (bienes)'),
+                    ('group.kind', '=', 'sale'),
+                    ])
+            reduced_tax, = Tax.search([
+                    ('company', '=', company.id),
+                    ('name', '=', 'IVA 10% (bienes)'),
+                    ('group.kind', '=', 'sale'),
+                    ])
+            taxes = [normal_tax, reduced_tax]
+            sii_invoice = create_invoice('out', company, party, taxes)
+
+            payload = sii_invoice.get_payload()
+
+            self.assertListEqual(
+                list(payload.keys()),
+                ['PeriodoLiquidacion', 'IDFactura', 'FacturaExpedida'])
+            self.assertEqual(
+                payload['FacturaExpedida']['TipoFactura'], 'F1')
+            tax_detail = {
+                'DetalleIVA': [{
+                    'BaseImponible': Decimal('50.00'),
+                    'TipoImpositivo': '10.0',
+                    'CuotaRepercutida': Decimal('5.00'),
+                    }, {
+                    'BaseImponible': Decimal('50.00'),
+                    'TipoImpositivo': '21.00',
+                    'CuotaRepercutida': Decimal('10.50'),
+                    }],
+                }
+            self.assertDictEqual(
+                payload['FacturaExpedida']['TipoDesglose']['DesgloseFactura'][
+                    'Sujeta'][0]['NoExenta']['DesgloseIVA'], tax_detail)
+
     @with_transaction()
     def test_customer_credit_note_sii_payload(self):
         "Test Customer Credit Note SII Payload"