diff -u b/inline_entity_form.module b/inline_entity_form.module
--- b/inline_entity_form.module
+++ b/inline_entity_form.module
@@ -408,14 +408,20 @@
   // Get the entity type labels for the UI strings.
   $labels = $controller->labels();
 
+  // Use current form language for translatable field.
+  if (!empty($form_state['entity_translation']['is_translation']) && $langcode != LANGUAGE_NONE) {
+    $langcode = $form_state['entity_translation']['form_langcode'];
+  }
+
   // Build a parents array for this element's values in the form.
-  $parents = array_merge($element['#field_parents'], array($element['#field_name'], $element['#language']));
+  $parents = array_merge($element['#field_parents'], array($element['#field_name'], $langcode));
 
-  // If the parent entity is new, the language is not yet set. Use the langcode
-  // from the parent form if exisiting in this case.
+  // If the parent entity is new, the language is not yet set.
+  // Use the langcode from the parent form if exisiting in this case.
   if (!isset($element['#entity']->$parent_entity_info['entity keys']['id']) && isset($form_state['complete form']['language'])) {
     $parent_langcode = isset($form_state['complete form']['language']['#value']) ? $form_state['complete form']['language']['#value'] : $form_state['complete form']['language']['#default_value'];
-  } else {
+  }
+  else {
     // Get the langcode of the parent entity.
     $parent_langcode = entity_language($element['#entity_type'], $element['#entity']);
   }
@@ -1467,12 +1473,27 @@
   foreach (field_info_instances($parent_entity_type, $bundle_name) as $instance_name => $instance) {
     if (isset($instance['widget']) && strpos($instance['widget']['type'], 'inline_entity_form') === 0) {
       $field_name = $instance['field_name'];
+      $field = field_info_field($field_name);
+
       if (!isset($form[$field_name])) {
         // The field wasn't found on this form, skip it.
         // Usually happens on stub entity forms that don't contain all fields.
         continue;
       }
-      $langcode = $form[$field_name]['#language'];
+
+      // check inline entity translatable sion fallback parent
+      if ($form_state['entity_translation']['is_translation'] == TRUE) {
+        $langcode = $form_state['entity_translation']['form_langcode'];
+      }
+      else {
+        $langcode = ($field['translatable'] ? $parent_entity->language : $form[$field_name]['#language']);
+      }
+
+      if (!isset($form[$field_name][$langcode]['#ief_id']) && isset($form[$field_name][LANGUAGE_NONE]['#ief_id'])) {
+        $form[$field_name][$langcode]['#ief_id'] = $form[$field_name][LANGUAGE_NONE]['#ief_id'];
+        unset($form[$field_name][LANGUAGE_NONE]);
+      }
+
       if (!isset($form[$field_name][$langcode]['#ief_id'])) {
         // The field is present on the form, but the IEF widget wasn't added,
         // usually due to inline_entity_form_field_widget_properties_alter().