diff --git a/addons/purchase/res_config.py b/addons/purchase/res_config.py
index 7f4a9b9b95e..1ef2c87cad7 100644
--- a/addons/purchase/res_config.py
+++ b/addons/purchase/res_config.py
@@ -82,7 +82,7 @@ class purchase_config_settings(osv.osv_memory):
 
     _defaults = {
         'default_invoice_method': 'manual',
-        'tax_policy': 'global_on_order',
+        'tax_policy': 'no_tax',
     }
 
     def onchange_tax_policy(self, cr, uid, ids, tax_policy, context=None):
diff --git a/addons/sale/res_config.py b/addons/sale/res_config.py
index f95c22d7b30..fb551eea0e7 100644
--- a/addons/sale/res_config.py
+++ b/addons/sale/res_config.py
@@ -127,7 +127,7 @@ class sale_configuration(osv.osv_memory):
     _defaults = {
         'default_order_policy': 'manual',
         'time_unit': _get_default_time_unit,
-        'tax_policy': 'global_on_order',
+        'tax_policy': 'no_tax',
     }
 
     def set_sale_defaults(self, cr, uid, ids, context=None):