diff --git a/openedx_tagging/core/tagging/rest_api/v1/serializers.py b/openedx_tagging/core/tagging/rest_api/v1/serializers.py
index d35df865..e4aa0d0b 100644
--- a/openedx_tagging/core/tagging/rest_api/v1/serializers.py
+++ b/openedx_tagging/core/tagging/rest_api/v1/serializers.py
@@ -194,7 +194,6 @@ def to_representation(self, instance: list[ObjectTag]) -> dict:
                 tax_entry = {
                     "name": obj_tag.name,
                     "taxonomy_id": obj_tag.taxonomy_id,
-                    "editable": (not obj_tag.taxonomy.cast().system_defined) if obj_tag.taxonomy else False,
                     "tags": []
                 }
                 taxonomies.append(tax_entry)
diff --git a/tests/openedx_tagging/core/tagging/test_views.py b/tests/openedx_tagging/core/tagging/test_views.py
index a79c7746..a19be95b 100644
--- a/tests/openedx_tagging/core/tagging/test_views.py
+++ b/tests/openedx_tagging/core/tagging/test_views.py
@@ -690,7 +690,6 @@ def test_retrieve_object_tags(self, user_attr, expected_status):
                         {
                             "name": "Life on Earth",
                             "taxonomy_id": 1,
-                            "editable": True,
                             "tags": [
                                 # Note: based on tree order (Animalia before Fungi), this tag comes first even though it
                                 # starts with "M" and Fungi starts with "F"
@@ -719,7 +718,6 @@ def test_retrieve_object_tags(self, user_attr, expected_status):
                         {
                             "name": "User Authors",
                             "taxonomy_id": 3,
-                            "editable": False,
                             "tags": [
                                 {
                                     "value": "test_user_1",
@@ -874,7 +872,6 @@ def test_retrieve_object_tags_taxonomy_queryparam(
                         {
                             "name": "User Authors",
                             "taxonomy_id": 3,
-                            "editable": False,
                             "tags": [
                                 {
                                     "value": "test_user_1",