diff --git a/addons/l10n_cl/models/res_partner.py b/addons/l10n_cl/models/res_partner.py
index ecef783641e..f54d3b19732 100644
--- a/addons/l10n_cl/models/res_partner.py
+++ b/addons/l10n_cl/models/res_partner.py
@@ -23,6 +23,10 @@ class ResPartner(models.Model):
              '3 - End consumer (only receipts)\n'
              '4 - Foreigner')
 
+    @api.model
+    def _commercial_fields(self):
+        return super()._commercial_fields() + ['l10n_cl_sii_taxpayer_type']
+
     def _format_vat_cl(self, values):
         identification_types = [self.env.ref('l10n_latam_base.it_vat').id, self.env.ref('l10n_cl.it_RUT').id,
                                 self.env.ref('l10n_cl.it_RUN').id]