diff --git a/java/google/registry/tools/sql/billing_data_view.sql b/java/google/registry/tools/sql/billing_data_view.sql
index 5ebc2b7bb..b0a618a3b 100644
--- a/java/google/registry/tools/sql/billing_data_view.sql
+++ b/java/google/registry/tools/sql/billing_data_view.sql
@@ -146,7 +146,10 @@ LEFT JOIN EACH (
       [%SOURCE_DATASET%.Cancellation]
     WHERE
       -- Filter out Registry 1.0 data - TODO(b/20828509): remove this.
-      __key__.namespace = '')
+      __key__.namespace = ''
+        -- TODO(b/27562876): Filter out synthetic OneTime events until we verify
+        -- that expanded OneTime events via MapReduce are correct and complete.
+        AND syntheticCreationTime IS NULL)
   WHERE
     -- Filter out prober data.
     tld IN