diff --git a/terragrunt/org_account/cost_usage_report/lambdas/billing_extract_tags/main.py b/terragrunt/org_account/cost_usage_report/lambdas/billing_extract_tags/main.py
index eb746d4c..5dd21c89 100644
--- a/terragrunt/org_account/cost_usage_report/lambdas/billing_extract_tags/main.py
+++ b/terragrunt/org_account/cost_usage_report/lambdas/billing_extract_tags/main.py
@@ -3,6 +3,7 @@
 This is then used to enrich the billing data with the account tags to allow
 for business unit filtering.
 """
+
 import json
 import logging
 import os
@@ -61,11 +62,26 @@ def handler(event, context):
 
     # .write json to string and add a newline between each record
     logging.info("Writing account tags to json")
-    accounts = json.dumps(accounts, default=str, indent=2)
-    logging.info(f"Accounts: {accounts}")
+    accounts_json = (
+        "[\n"
+        + ",\n".join(
+            json.dumps(
+                {k.lower(): v for k, v in account.items()},
+                default=str,
+                separators=(",", ": "),
+            )
+            for account in accounts
+        )
+        + "\n]"
+    )
+    logging.info(f"Accounts: {accounts_json}")
 
     # save accounts to an s3 bucket
     logging.info("Saving account tags to s3")
-    s3.put_object(Bucket=TARGET_BUCKET, Key="operations/aws/organization/account-tags.json", Body=accounts)
+    s3.put_object(
+        Bucket=TARGET_BUCKET,
+        Key="operations/aws/organization/account-tags.json",
+        Body=accounts_json,
+    )
 
     return {"statusCode": 200}
diff --git a/terragrunt/org_account/cost_usage_report/lambdas/billing_extract_tags/test_main.py b/terragrunt/org_account/cost_usage_report/lambdas/billing_extract_tags/test_main.py
index dd98c31d..86733de4 100644
--- a/terragrunt/org_account/cost_usage_report/lambdas/billing_extract_tags/test_main.py
+++ b/terragrunt/org_account/cost_usage_report/lambdas/billing_extract_tags/test_main.py
@@ -3,7 +3,7 @@
 from main import handler
 
 TARGET_BUCKET = "TARGET_BUCKET"
-ACCOUNT_TAGS_KEY = "account_tags.json"
+ACCOUNT_TAGS_KEY = "operations/aws/organization/account-tags.json"
 
 
 class TestLambdaHandler(unittest.TestCase):
@@ -31,7 +31,8 @@ def test_lambda_handler(
             Bucket=TARGET_BUCKET,
             Key=ACCOUNT_TAGS_KEY,
             Body="""[
-{"Id": "123", "tag_Name": "Dev"}]""",
+{"id": "123","tag_name": "Dev"}
+]""",
         )
 
         self.assertEqual(response, {"statusCode": 200})
@@ -61,6 +62,7 @@ def test_lambda_handler_pagination(
             Bucket=TARGET_BUCKET,
             Key=ACCOUNT_TAGS_KEY,
             Body="""[
-{"Id": "123", "tag_Name": "Dev"},
-{"Id": "456", "tag_Name": "Prod"}]""",
+{"id": "123","tag_name": "Dev"},
+{"id": "456","tag_name": "Prod"}
+]""",
         )