diff -u b/multifield.migrate.inc b/multifield.migrate.inc
--- b/multifield.migrate.inc
+++ b/multifield.migrate.inc
@@ -126,6 +126,21 @@
       }
     }
 
+    // Remove multifield values that are completely empty.
+    foreach ($items as $delta => $value) {
+      $is_empty = TRUE;
+
+      foreach ($value as $field_name => $v) {
+        if (reset($v) !== NULL) {
+          $is_empty = FALSE;
+        }
+      }
+
+      if ($is_empty) {
+        unset($items[$delta]);
+      }
+    }
+
     // Migrate each set of subfields.
     // @see MigrateFieldsEntityHandler::prepare()
     $language = $this->getFieldLanguage($entity, $field_info, $arguments);