diff --git a/litellm/proxy/litellm_pre_call_utils.py b/litellm/proxy/litellm_pre_call_utils.py
index 9be78264e85..49d31c1efec 100644
--- a/litellm/proxy/litellm_pre_call_utils.py
+++ b/litellm/proxy/litellm_pre_call_utils.py
@@ -1539,8 +1539,15 @@ def add_guardrails_from_policy_engine(
     """
     from litellm._logging import verbose_proxy_logger
     from litellm.proxy.common_utils.callback_utils import (
+        add_policy_sources_to_metadata,
         add_policy_to_applied_policies_header,
     )
+    from litellm.proxy.common_utils.http_parsing_utils import (
+        get_tags_from_request_body,
+    )
+    from litellm.proxy.policy_engine.attachment_registry import (
+        get_attachment_registry,
+    )
     from litellm.proxy.policy_engine.policy_matcher import PolicyMatcher
     from litellm.proxy.policy_engine.policy_registry import get_policy_registry
     from litellm.proxy.policy_engine.policy_resolver import PolicyResolver
@@ -1561,20 +1568,31 @@ def add_guardrails_from_policy_engine(
         )
         return
 
-    # Build context from request
+    # Extract tags using the shared helper (handles metadata / litellm_metadata,
+    # top-level tags, deduplication, and type filtering).
+
+    all_tags = get_tags_from_request_body(data) or None
+
     context = PolicyMatchContext(
         team_alias=user_api_key_dict.team_alias,
         key_alias=user_api_key_dict.key_alias,
         model=data.get("model"),
+        tags=all_tags,
     )
 
     verbose_proxy_logger.debug(
         f"Policy engine: matching policies for context team_alias={context.team_alias}, "
-        f"key_alias={context.key_alias}, model={context.model}"
+        f"key_alias={context.key_alias}, model={context.model}, tags={context.tags}"
     )
 
-    # Get matching policies via attachments
-    matching_policy_names = PolicyMatcher.get_matching_policies(context=context)
+    # Get matching policies via attachments (with match reasons for attribution)
+    attachment_registry = get_attachment_registry()
+    matches_with_reasons = attachment_registry.get_attached_policies_with_reasons(
+        context
+    )
+    matching_policy_names = [m["policy_name"] for m in matches_with_reasons]
+    # Build reasons map: {"hipaa-policy": "tag:healthcare", ...}
+    policy_reasons = {m["policy_name"]: m["matched_via"] for m in matches_with_reasons}
 
     verbose_proxy_logger.debug(
         f"Policy engine: matched policies via attachments: {matching_policy_names}"
@@ -1607,6 +1625,16 @@ def add_guardrails_from_policy_engine(
             request_data=data, policy_name=policy_name
         )
 
+    # Track policy attribution sources for x-litellm-policy-sources header
+    applied_reasons = {
+        name: policy_reasons[name]
+        for name in applied_policy_names
+        if name in policy_reasons
+    }
+    add_policy_sources_to_metadata(
+        request_data=data, policy_sources=applied_reasons
+    )
+
     # Resolve guardrails from matching policies
     resolved_guardrails = PolicyResolver.resolve_guardrails_for_context(context=context)