diff --git a/litellm/exceptions.py b/litellm/exceptions.py
index d189b7ebe..abddb108a 100644
--- a/litellm/exceptions.py
+++ b/litellm/exceptions.py
@@ -314,6 +314,7 @@ class BudgetExceededError(Exception):
         self.current_cost = current_cost
         self.max_budget = max_budget
         message = f"Budget has been exceeded! Current cost: {current_cost}, Max budget: {max_budget}"
+        self.message = message
         super().__init__(message)
 
 
diff --git a/litellm/integrations/slack_alerting.py b/litellm/integrations/slack_alerting.py
index c1fdc553b..08af88562 100644
--- a/litellm/integrations/slack_alerting.py
+++ b/litellm/integrations/slack_alerting.py
@@ -1443,7 +1443,9 @@ Model Info:
         if response.status_code == 200:
             pass
         else:
-            print("Error sending slack alert. Error=", response.text)  # noqa
+            verbose_proxy_logger.debug(
+                "Error sending slack alert. Error=", response.text
+            )
 
     async def async_log_success_event(self, kwargs, response_obj, start_time, end_time):
         """Log deployment latency"""
diff --git a/litellm/proxy/auth/auth_checks.py b/litellm/proxy/auth/auth_checks.py
index d06469b71..a6e97960e 100644
--- a/litellm/proxy/auth/auth_checks.py
+++ b/litellm/proxy/auth/auth_checks.py
@@ -193,13 +193,27 @@ async def get_end_user_object(
     if end_user_id is None:
         return None
     _key = "end_user_id:{}".format(end_user_id)
+
+    def check_in_budget(end_user_obj: LiteLLM_EndUserTable):
+        if end_user_obj.litellm_budget_table is None:
+            return
+        end_user_budget = end_user_obj.litellm_budget_table.max_budget
+        if end_user_budget is not None and end_user_obj.spend > end_user_budget:
+            raise litellm.BudgetExceededError(
+                current_cost=end_user_obj.spend, max_budget=end_user_budget
+            )
+
     # check if in cache
     cached_user_obj = await user_api_key_cache.async_get_cache(key=_key)
     if cached_user_obj is not None:
         if isinstance(cached_user_obj, dict):
-            return LiteLLM_EndUserTable(**cached_user_obj)
+            return_obj = LiteLLM_EndUserTable(**cached_user_obj)
+            check_in_budget(end_user_obj=return_obj)
+            return return_obj
         elif isinstance(cached_user_obj, LiteLLM_EndUserTable):
-            return cached_user_obj
+            return_obj = cached_user_obj
+            check_in_budget(end_user_obj=return_obj)
+            return return_obj
     # else, check db
     try:
         response = await prisma_client.db.litellm_endusertable.find_unique(
@@ -217,8 +231,12 @@ async def get_end_user_object(
 
         _response = LiteLLM_EndUserTable(**response.dict())
 
+        check_in_budget(end_user_obj=_response)
+
         return _response
     except Exception as e:  # if end-user not in db
+        if isinstance(e, litellm.BudgetExceededError):
+            raise e
         return None
 
 
diff --git a/litellm/proxy/proxy_server.py b/litellm/proxy/proxy_server.py
index 2e9c25665..f75a1e9d1 100644
--- a/litellm/proxy/proxy_server.py
+++ b/litellm/proxy/proxy_server.py
@@ -722,6 +722,8 @@ async def user_api_key_auth(
                                 budget_info.max_budget
                             )
             except Exception as e:
+                if isinstance(e, litellm.BudgetExceededError):
+                    raise e
                 verbose_proxy_logger.debug(
                     "Unable to find user in db. Error - {}".format(str(e))
                 )
@@ -1410,6 +1412,10 @@ async def user_api_key_auth(
             raise Exception()
     except Exception as e:
         traceback.print_exc()
+        if isinstance(e, litellm.BudgetExceededError):
+            raise ProxyException(
+                message=e.message, type="auth_error", param=None, code=400
+            )
         if isinstance(e, HTTPException):
             raise ProxyException(
                 message=getattr(e, "detail", f"Authentication Error({str(e)})"),