diff --git a/addons/account/models/chart_template.py b/addons/account/models/chart_template.py
index dd275d218d2..f3eeb4bae50 100644
--- a/addons/account/models/chart_template.py
+++ b/addons/account/models/chart_template.py
@@ -265,7 +265,11 @@ class AccountChartTemplate(models.AbstractModel):
             return (
                 tax.amount_type != template.get('amount_type', 'percent')
                 or tax.amount != template.get('amount', 0)
-                or len(tax.repartition_line_ids) != len(template.get('repartition_line_ids', []))
+                or (
+                    len(tax.repartition_line_ids) != len(template.get('repartition_line_ids', []))
+                    # Taxes that don't have repartition lines in their templates get theirs created by default
+                    and len(template.get('repartition_line_ids', [])) != 0
+                )
             )
 
         obsolete_xmlid = set()
diff --git a/addons/account/tests/test_chart_template.py b/addons/account/tests/test_chart_template.py
index 033213b7770..8b3442a6934 100644
--- a/addons/account/tests/test_chart_template.py
+++ b/addons/account/tests/test_chart_template.py
@@ -444,6 +444,12 @@ class TestChartTemplate(TransactionCase):
         self.assertEqual(len(children_taxes), 2, "Two children should have been created.")
         self.assertEqual(parent_tax.children_tax_ids.ids, children_taxes.ids, "The parent and its children taxes should be linked together.")
 
+        with patch.object(AccountChartTemplate, '_get_chart_template_data', side_effect=local_get_data, autospec=True):
+            # We don't change anything
+            self.env['account.chart.template'].try_loading('test', company=self.company_1, install_demo=False)
+
+        self.assertEqual(parent_tax.name, 'Tax with children', "The parent tax created before should not have changed")
+
     def test_update_taxes_children_tax_ids_inactive(self):
         """ Ensure tax templates are correctly generated when updating taxes with children taxes,
         even if templates are inactive.