diff --git a/rest_framework_simplejwt/tokens.py b/rest_framework_simplejwt/tokens.py
index 9e9c3b9df..0105df094 100644
--- a/rest_framework_simplejwt/tokens.py
+++ b/rest_framework_simplejwt/tokens.py
@@ -202,6 +202,8 @@ def for_user(cls: Type[T], user: AuthUser) -> T:
         Returns an authorization token for the given user that will be provided
         after authenticating the user's credentials.
         """
+        if not user.is_active:
+            raise Exception("User is inactive.")
         user_id = getattr(user, api_settings.USER_ID_FIELD)
         if not isinstance(user_id, int):
             user_id = str(user_id)