diff --git a/source/helper/util.py b/source/helper/util.py
index 956a953..bc34f9f 100644
--- a/source/helper/util.py
+++ b/source/helper/util.py
@@ -667,9 +667,11 @@ class DataToDict():
                     'Base': data[i + 1],
                     'Impuesto': data[i + 2],
                     'TipoFactor': data[i + 3],
-                    'TasaOCuota': data[i + 4],
-                    'Importe': data[i + 5],
                 }
+                if data[i + 4]:
+                    tax['TasaOCuota'] = data[i + 4]
+                if data[i + 5]:
+                    tax['Importe'] = data[i + 5]
                 traslados.append(tax)
             elif type_tax == self.RETENCION:
                 tax = {