diff --git a/htdocs/admin/company.php b/htdocs/admin/company.php
index 5580249c141..ad77a9ba8c7 100644
--- a/htdocs/admin/company.php
+++ b/htdocs/admin/company.php
@@ -561,9 +561,9 @@ if ($action == 'edit' || $action == 'updateedit')
         print '<td align="right">&nbsp;</td>';
         print "</tr>\n";
         $var=true;
-
         $var=!$var;
-        print "<tr ".$bc[$var]."><td width=\"140\"><label><input type=\"radio\" name=\"optionlocaltax1\" value=\"localtax1on\"".($conf->global->FACTURE_LOCAL_TAX1_OPTION != "localtax1off"?" checked":"")."> ".$langs->transcountry("LocalTax1IsUsed",$mysoc->country_code)."</label></td>";
+        // Note: When option is not set, it must not appears as set on on, because there is no default value for this option
+        print "<tr ".$bc[$var]."><td width=\"140\"><label><input type=\"radio\" name=\"optionlocaltax1\" value=\"localtax1on\"".(($conf->global->FACTURE_LOCAL_TAX1_OPTION == '1' || $conf->global->FACTURE_LOCAL_TAX1_OPTION == "localtax1on")?" checked":"")."> ".$langs->transcountry("LocalTax1IsUsed",$mysoc->country_code)."</label></td>";
         print '<td colspan="2">';
         print "<table>";
         print "<tr><td>".$langs->transcountry("LocalTax1IsUsedDesc",$mysoc->country_code)."</td></tr>";
@@ -595,7 +595,8 @@ if ($action == 'edit' || $action == 'updateedit')
         $var=true;
 
         $var=!$var;
-        print "<tr ".$bc[$var]."><td width=\"140\"><label><input type=\"radio\" name=\"optionlocaltax2\" value=\"localtax2on\"".($conf->global->FACTURE_LOCAL_TAX2_OPTION != "localtax2off"?" checked":"")."> ".$langs->transcountry("LocalTax2IsUsed",$mysoc->country_code)."</label></td>";
+        // Note: When option is not set, it must not appears as set on on, because there is no default value for this option
+        print "<tr ".$bc[$var]."><td width=\"140\"><label><input type=\"radio\" name=\"optionlocaltax2\" value=\"localtax2on\"".(($conf->global->FACTURE_LOCAL_TAX2_OPTION == '1' || $conf->global->FACTURE_LOCAL_TAX2_OPTION == "localtax2on")?" checked":"")."> ".$langs->transcountry("LocalTax2IsUsed",$mysoc->country_code)."</label></td>";
         print '<td colspan="2">';
         print "<table>";
         print "<tr><td>".$langs->transcountry("LocalTax2IsUsedDesc",$mysoc->country_code)."</td></tr>";
@@ -941,7 +942,7 @@ else
         $var=true;
 
         $var=!$var;
-        print "<tr ".$bc[$var]."><td width=\"140\"><label><input ".$bc[$var]." type=\"radio\" name=\"optionlocaltax1\" disabled value=\"localtax1on\"".($conf->global->FACTURE_LOCAL_TAX1_OPTION != "localtax1off"?" checked":"")."> ".$langs->transcountry("LocalTax1IsUsed",$mysoc->country_code)."</label></td>";
+        print "<tr ".$bc[$var]."><td width=\"140\"><label><input ".$bc[$var]." type=\"radio\" name=\"optionlocaltax1\" disabled value=\"localtax1on\"".(($conf->global->FACTURE_LOCAL_TAX1_OPTION == '1' || $conf->global->FACTURE_LOCAL_TAX1_OPTION == "localtax1on")?" checked":"")."> ".$langs->transcountry("LocalTax1IsUsed",$mysoc->country_code)."</label></td>";
         print '<td colspan="2">';
         print "<table>";
         print "<tr><td>".$langs->transcountry("LocalTax1IsUsedDesc",$mysoc->country_code)."</td></tr>";
@@ -974,7 +975,7 @@ else
         $var=true;
 
         $var=!$var;
-        print "<tr ".$bc[$var]."><td width=\"140\"><label><input ".$bc[$var]." type=\"radio\" name=\"optionlocaltax2\" disabled value=\"localtax2on\"".($conf->global->FACTURE_LOCAL_TAX2_OPTION != "localtax2off"?" checked":"")."> ".$langs->transcountry("LocalTax2IsUsed",$mysoc->country_code)."</label></td>";
+        print "<tr ".$bc[$var]."><td width=\"140\"><label><input ".$bc[$var]." type=\"radio\" name=\"optionlocaltax2\" disabled value=\"localtax2on\"".(($conf->global->FACTURE_LOCAL_TAX2_OPTION == '1' || $conf->global->FACTURE_LOCAL_TAX2_OPTION == "localtax2on")?" checked":"")."> ".$langs->transcountry("LocalTax2IsUsed",$mysoc->country_code)."</label></td>";
         print '<td colspan="2">';
         print "<table>";
         print "<tr><td>".$langs->transcountry("LocalTax2IsUsedDesc",$mysoc->country_code)."</td></tr>";
diff --git a/htdocs/societe/class/societe.class.php b/htdocs/societe/class/societe.class.php
index 66d40e480ba..4e50a081079 100644
--- a/htdocs/societe/class/societe.class.php
+++ b/htdocs/societe/class/societe.class.php
@@ -2552,8 +2552,8 @@ class Societe extends CommonObject
     	$this->tva_assuj=((isset($conf->global->FACTURE_TVAOPTION) && $conf->global->FACTURE_TVAOPTION=='franchise')?0:1);
 
     	// Define if company use local taxes
-    	$this->localtax1_assuj=((isset($conf->global->FACTURE_LOCAL_TAX1_OPTION) && $conf->global->FACTURE_LOCAL_TAX1_OPTION=='localtax1on')?1:0);
-    	$this->localtax2_assuj=((isset($conf->global->FACTURE_LOCAL_TAX2_OPTION) && $conf->global->FACTURE_LOCAL_TAX2_OPTION=='localtax2on')?1:0);
+    	$this->localtax1_assuj=((isset($conf->global->FACTURE_LOCAL_TAX1_OPTION) && ($conf->global->FACTURE_LOCAL_TAX1_OPTION=='1' || $conf->global->FACTURE_LOCAL_TAX1_OPTION=='localtax1on'))?1:0);
+    	$this->localtax2_assuj=((isset($conf->global->FACTURE_LOCAL_TAX2_OPTION) && ($conf->global->FACTURE_LOCAL_TAX2_OPTION=='1' || $conf->global->FACTURE_LOCAL_TAX2_OPTION=='localtax2on'))?1:0);
     }
 
     /**