diff --git a/addons/account/models/product.py b/addons/account/models/product.py
index 92a735bc18f..296ab735348 100644
--- a/addons/account/models/product.py
+++ b/addons/account/models/product.py
@@ -27,12 +27,12 @@ class ProductTemplate(models.Model):
 
     taxes_id = fields.Many2many('account.tax', 'product_taxes_rel', 'prod_id', 'tax_id', help="Default taxes used when selling the product.", string='Customer Taxes',
         domain=[('type_tax_use', '=', 'sale')],
-        default=lambda self: self.env.companies.account_sale_tax_id or self.env.companies.root_id.account_sale_tax_id,
+        default=lambda self: self.env.companies.account_sale_tax_id or self.env.companies.root_id.sudo().account_sale_tax_id,
     )
     tax_string = fields.Char(compute='_compute_tax_string')
     supplier_taxes_id = fields.Many2many('account.tax', 'product_supplier_taxes_rel', 'prod_id', 'tax_id', string='Vendor Taxes', help='Default taxes used when buying the product.',
         domain=[('type_tax_use', '=', 'purchase')],
-        default=lambda self: self.env.companies.account_purchase_tax_id or self.env.companies.root_id.account_purchase_tax_id,
+        default=lambda self: self.env.companies.account_purchase_tax_id or self.env.companies.root_id.sudo().account_purchase_tax_id,
     )
     property_account_income_id = fields.Many2one('account.account', company_dependent=True,
         string="Income Account",