diff --git a/addons/account/models/partner.py b/addons/account/models/partner.py
index 40a200950c2..4dc1252eded 100644
--- a/addons/account/models/partner.py
+++ b/addons/account/models/partner.py
@@ -147,12 +147,17 @@ class AccountFiscalPosition(models.Model):
         if not fpos:
             # Fallback on catchall (no country, no group)
             fpos = self.search(base_domain + null_country_dom, limit=1)
-        return fpos or False
+        return fpos
 
     @api.model
     def get_fiscal_position(self, partner_id, delivery_id=None):
+        """
+        :return: fiscal position found (recordset)
+        :rtype: :class:`account.fiscal.position`
+        """
         if not partner_id:
-            return False
+            return self.env['account.fiscal.position']
+
         # This can be easily overridden to apply more complex fiscal rules
         PartnerObj = self.env['res.partner']
         partner = PartnerObj.browse(partner_id)
@@ -165,7 +170,7 @@ class AccountFiscalPosition(models.Model):
 
         # partner manually set fiscal position always win
         if delivery.property_account_position_id or partner.property_account_position_id:
-            return delivery.property_account_position_id.id or partner.property_account_position_id.id
+            return delivery.property_account_position_id or partner.property_account_position_id
 
         # First search only matching VAT positions
         vat_required = bool(partner.vat)
@@ -175,7 +180,7 @@ class AccountFiscalPosition(models.Model):
         if not fp and vat_required:
             fp = self._get_fpos_by_region(delivery.country_id.id, delivery.state_id.id, delivery.zip, False)
 
-        return fp.id if fp else False
+        return fp or self.env['account.fiscal.position']
 
 
 class AccountFiscalPositionTax(models.Model):
diff --git a/addons/l10n_ar/models/account_fiscal_position.py b/addons/l10n_ar/models/account_fiscal_position.py
index d2032de8f7b..82b7b7618ef 100644
--- a/addons/l10n_ar/models/account_fiscal_position.py
+++ b/addons/l10n_ar/models/account_fiscal_position.py
@@ -21,7 +21,7 @@ class AccountFiscalPosition(models.Model):
                     partner_id).l10n_ar_afip_responsibility_type_id.id),
                 ('company_id', '=', company.id),
             ]
-            return self.search(domain, limit=1).id
+            return self.search(domain, limit=1)
         return super().get_fiscal_position(partner_id, delivery_id=delivery_id)
 
     @api.onchange('l10n_ar_afip_responsibility_type_ids', 'country_group_id', 'country_id', 'zip_from', 'zip_to')
diff --git a/addons/website_sale/models/website.py b/addons/website_sale/models/website.py
index 89c7dcdcd08..147e024fd61 100644
--- a/addons/website_sale/models/website.py
+++ b/addons/website_sale/models/website.py
@@ -283,8 +283,7 @@ class Website(models.Model):
                 country_code = request.session['geoip'].get('country_code')
                 if country_code:
                     country_id = request.env['res.country'].search([('code', '=', country_code)], limit=1).id
-                    fp_id = request.env['account.fiscal.position'].sudo().with_company(request.website.company_id.id)._get_fpos_by_region(country_id)
-                    sale_order.fiscal_position_id = fp_id
+                    sale_order.fiscal_position_id = request.env['account.fiscal.position'].sudo().with_company(request.website.company_id.id)._get_fpos_by_region(country_id)
                 else:
                     # if no geolocation, use the public user fp
                     sale_order.onchange_partner_shipping_id()