diff --git a/moto/sns/models.py b/moto/sns/models.py
index 23c36915b648..cfa406cad786 100644
--- a/moto/sns/models.py
+++ b/moto/sns/models.py
@@ -1272,6 +1272,7 @@ def get_config_resource(self, resource_id: str) -> dict[str, Any] | None:
             "arn": topic.arn,
             "awsRegion": self.region_name,
             "availabilityZone": "Not Applicable",
+            "tags": dict(topic._tags),
             "configuration": {
                 "topicArn": topic.arn,
                 "displayName": topic.display_name,
@@ -1284,7 +1285,7 @@ def get_config_resource(self, resource_id: str) -> dict[str, Any] | None:
             },
             "supplementaryConfiguration": {
                 "Tags": json.dumps(
-                    [{"Key": k, "Value": v} for k, v in topic._tags.items()]
+                    [{"key": k, "value": v} for k, v in topic._tags.items()]
                 )
             },
             "configurationItemMD5Hash": "",
diff --git a/tests/test_sns/test_topics.py b/tests/test_sns/test_topics.py
index 46fa524adee5..846af82cd4db 100644
--- a/tests/test_sns/test_topics.py
+++ b/tests/test_sns/test_topics.py
@@ -711,7 +711,12 @@ def test_get_config_resource():
     assert configuration["fifoTopic"] is True
     assert configuration["contentBasedDeduplication"] is True
     tags = json.loads(config_item["supplementaryConfiguration"]["Tags"])
-    assert tags == [{"Key": "Environment", "Value": "Test"}]
+    assert tags == [{"key": "Environment", "value": "Test"}]
+
+    history = config_client.get_resource_config_history(
+        resourceType="AWS::SNS::Topic", resourceId=topic_arn
+    )
+    assert history["configurationItems"][0]["tags"] == {"Environment": "Test"}
 
     response = config_client.batch_get_resource_config(
         resourceKeys=[