diff --git a/app/social/api/routers/v1/upload.py b/app/social/api/routers/v1/upload.py
index a6272d0..cdf667c 100644
--- a/app/social/api/routers/v1/upload.py
+++ b/app/social/api/routers/v1/upload.py
@@ -178,8 +178,11 @@ async def upload_to_social(
     )
 
     # 6. 백그라운드 태스크 등록 (즉시 업로드 or 예약 없을 때만)
-    from app.utils.timezone import now as utcnow
-    is_scheduled = body.scheduled_at and body.scheduled_at > utcnow().replace(tzinfo=None)
+    # scheduled_at은 naive datetime (클라이언트에서 KST 기준으로 전송)
+    # config의 TIMEZONE(KST) 기준 현재 시간과 비교
+    from config import TIMEZONE
+    now_kst_naive = datetime.now(TIMEZONE).replace(tzinfo=None)
+    is_scheduled = body.scheduled_at and body.scheduled_at > now_kst_naive
     if not is_scheduled:
         background_tasks.add_task(process_social_upload, social_upload.id)