diff --git a/addons/l10n_th/account_data.xml b/addons/l10n_th/account_data.xml
index 0f3a5d6f9a1..a6689ed2bc2 100644
--- a/addons/l10n_th/account_data.xml
+++ b/addons/l10n_th/account_data.xml
@@ -518,7 +518,6 @@
     <field name="base_code_id" ref="tc_base_wht_co_other"/>
     <field name="tax_code_id" ref="tc_tax_wht_co_other"/>
     <field name="type_tax_use">purchase</field>
-    <field name="is_wht" eval="1"/>
 </record>
 
 <record id="tax_wht_co_2" model="account.tax.template">
@@ -531,7 +530,6 @@
     <field name="base_code_id" ref="tc_base_wht_co_other"/>
     <field name="tax_code_id" ref="tc_tax_wht_co_other"/>
     <field name="type_tax_use">purchase</field>
-    <field name="is_wht" eval="1"/>
 </record>
 
 <record id="tax_wht_co_3" model="account.tax.template">
@@ -544,7 +542,6 @@
     <field name="base_code_id" ref="tc_base_wht_co_serv"/>
     <field name="tax_code_id" ref="tc_tax_wht_co_serv"/>
     <field name="type_tax_use">purchase</field>
-    <field name="is_wht" eval="1"/>
 </record>
 
 <record id="tax_wht_co_5" model="account.tax.template">
@@ -557,7 +554,6 @@
     <field name="base_code_id" ref="tc_base_wht_co_other"/>
     <field name="tax_code_id" ref="tc_tax_wht_co_other"/>
     <field name="type_tax_use">purchase</field>
-    <field name="is_wht" eval="1"/>
 </record>
 
 <record id="tax_wht_pers_1" model="account.tax.template">
@@ -570,7 +566,6 @@
     <field name="base_code_id" ref="tc_base_wht_pers_other"/>
     <field name="tax_code_id" ref="tc_tax_wht_pers_other"/>
     <field name="type_tax_use">purchase</field>
-    <field name="is_wht" eval="1"/>
 </record>
 
 <record id="tax_wht_pers_2" model="account.tax.template">
@@ -583,7 +578,6 @@
     <field name="base_code_id" ref="tc_base_wht_pers_other"/>
     <field name="tax_code_id" ref="tc_tax_wht_pers_other"/>
     <field name="type_tax_use">purchase</field>
-    <field name="is_wht" eval="1"/>
 </record>
 
 <record id="tax_wht_pers_3" model="account.tax.template">
@@ -596,7 +590,6 @@
     <field name="base_code_id" ref="tc_base_wht_pers_serv"/>
     <field name="tax_code_id" ref="tc_tax_wht_pers_serv"/>
     <field name="type_tax_use">purchase</field>
-    <field name="is_wht" eval="1"/>
 </record>
 
 <record id="tax_wht_pers_5" model="account.tax.template">
@@ -609,7 +602,6 @@
     <field name="base_code_id" ref="tc_base_wht_pers_other"/>
     <field name="tax_code_id" ref="tc_tax_wht_pers_other"/>
     <field name="type_tax_use">purchase</field>
-    <field name="is_wht" eval="1"/>
 </record>
 
 <record id="tax_wht_income_1" model="account.tax.template">
@@ -620,7 +612,6 @@
     <field name="account_collected_id" ref="a_wht_income"/>
     <field name="account_paid_id" ref="a_wht_income"/>
     <field name="type_tax_use">sale</field>
-    <field name="is_wht" eval="1"/>
 </record>
 
 <record id="tax_wht_income_2" model="account.tax.template">
@@ -631,7 +622,6 @@
     <field name="account_collected_id" ref="a_wht_income"/>
     <field name="account_paid_id" ref="a_wht_income"/>
     <field name="type_tax_use">sale</field>
-    <field name="is_wht" eval="1"/>
 </record>
 
 <record id="tax_wht_income_3" model="account.tax.template">
@@ -642,7 +632,6 @@
     <field name="account_collected_id" ref="a_wht_income"/>
     <field name="account_paid_id" ref="a_wht_income"/>
     <field name="type_tax_use">sale</field>
-    <field name="is_wht" eval="1"/>
 </record>
 
 <record id="tax_wht_income_5" model="account.tax.template">
@@ -653,7 +642,6 @@
     <field name="account_collected_id" ref="a_wht_income"/>
     <field name="account_paid_id" ref="a_wht_income"/>
     <field name="type_tax_use">sale</field>
-    <field name="is_wht" eval="1"/>
 </record>
 
 <!-- INSTALL ACTION -->