diff --git a/addons/l10n_it_edi_withholding/__init__.py b/addons/l10n_it_edi_withholding/__init__.py
index a8ca4231bc7..ef6df594e94 100644
--- a/addons/l10n_it_edi_withholding/__init__.py
+++ b/addons/l10n_it_edi_withholding/__init__.py
@@ -7,18 +7,11 @@ _logger = logging.getLogger(__name__)
 
 def _l10n_it_edi_withholding_post_init(env):
     """ Existing companies that have the Italian Chart of Accounts set """
-    template_code = 'it'
-    data = {
-        model: env['account.chart.template']._parse_csv(template_code, model, module='l10n_it_edi_withholding')
-        for model in [
-            'account.account',
-            'account.tax.group',
-            'account.tax',
-        ]
-    }
-    for company in env['res.company'].search([('chart_template', '=', template_code)]):
+    for company in env['res.company'].search([('chart_template', '=', 'it')]):
         _logger.info("Company %s already has the Italian localization installed, updating...", company.name)
-        company_chart_template = env['account.chart.template'].with_company(company)
-        company_data = dict(data)
-        company_chart_template._deref_account_tags(template_code, company_data['account.tax'])
-        company_chart_template._load_data(company_data)
+        ChartTemplate = env['account.chart.template'].with_company(company)
+        ChartTemplate._load_data({
+            'account.account': ChartTemplate._get_it_withholding_account_account(),
+            'account.tax': ChartTemplate._get_it_withholding_account_tax(),
+            'account.tax.group': ChartTemplate._get_it_withholding_account_tax_group(),
+        })