diff --git a/litellm/proxy/common_utils/http_parsing_utils.py b/litellm/proxy/common_utils/http_parsing_utils.py
index cc24713919c..fb14325512c 100644
--- a/litellm/proxy/common_utils/http_parsing_utils.py
+++ b/litellm/proxy/common_utils/http_parsing_utils.py
@@ -1,6 +1,11 @@
+import ast
+import json
 from typing import Optional
-from fastapi import Request
-import ast, json
+
+from fastapi import Request, UploadFile, status
+
+from litellm._logging import verbose_proxy_logger
+from litellm.types.router import Deployment
 
 
 async def _read_request_body(request: Optional[Request]) -> dict:
@@ -29,3 +34,66 @@ async def _read_request_body(request: Optional[Request]) -> dict:
         return request_data
     except:
         return {}
+
+
+def check_file_size_under_limit(
+    request_data: dict,
+    file: UploadFile,
+    router_model_names: list[str],
+) -> bool:
+    """
+    Check if any files passed in request are under max_file_size_mb
+
+    Returns True -> when file size is under max_file_size_mb limit
+    Raises ProxyException -> when file size is over max_file_size_mb limit or not a premium_user
+    """
+    from litellm.proxy.proxy_server import (
+        CommonProxyErrors,
+        ProxyException,
+        llm_router,
+        premium_user,
+    )
+
+    file_contents_size = file.size or 0
+    file_content_size_in_mb = file_contents_size / (1024 * 1024)
+
+    if llm_router is not None and request_data["model"] in router_model_names:
+        try:
+            deployment: Optional[Deployment] = (
+                llm_router.get_deployment_by_model_group_name(
+                    model_group_name=request_data["model"]
+                )
+            )
+            if (
+                deployment
+                and deployment.litellm_params is not None
+                and deployment.litellm_params.max_file_size_mb is not None
+            ):
+                max_file_size_mb = deployment.litellm_params.max_file_size_mb
+        except Exception as e:
+            verbose_proxy_logger.error(
+                "Got error when checking file size: %s", (str(e))
+            )
+
+    if max_file_size_mb is not None:
+        verbose_proxy_logger.debug(
+            "Checking file size, file content size=%s, max_file_size_mb=%s",
+            file_content_size_in_mb,
+            max_file_size_mb,
+        )
+        if not premium_user:
+            raise ProxyException(
+                message=f"Tried setting max_file_size_mb for /audio/transcriptions. {CommonProxyErrors.not_premium_user.value}",
+                code=status.HTTP_400_BAD_REQUEST,
+                type="bad_request",
+                param="file",
+            )
+        if file_content_size_in_mb > max_file_size_mb:
+            raise ProxyException(
+                message="File size is too large. Please check your file size",
+                code=status.HTTP_400_BAD_REQUEST,
+                type="bad_request",
+                param="file",
+            )
+
+    return True