diff --git a/product_category_tax/__manifest__.py b/product_category_tax/__manifest__.py
index 92828e0..5326d39 100644
--- a/product_category_tax/__manifest__.py
+++ b/product_category_tax/__manifest__.py
@@ -12,7 +12,7 @@
     'description': "",
     'author': 'Akretion',
     'website': 'http://www.akretion.com',
-    'depends': ['account'],
+    'depends': ['account', 'base_suspend_security'],
     'data': ['product_view.xml'],
     'installable': True,
 }
diff --git a/product_category_tax/product.py b/product_category_tax/product.py
index a82154b..732b5b5 100644
--- a/product_category_tax/product.py
+++ b/product_category_tax/product.py
@@ -36,11 +36,15 @@ class ProductCategTaxMixin(models.AbstractModel):
 
     @api.model
     def create(self, vals):
+        # suspend_security() is needed to read/set taxes in all companies
+        self = self.suspend_security()
         self.write_or_create(vals)
         return super(ProductCategTaxMixin, self).create(vals)
 
     @api.multi
     def write(self, vals):
+        # suspend_security() is needed to read/set taxes in all companies
+        self = self.suspend_security()
         self.write_or_create(vals)
         return super(ProductCategTaxMixin, self).write(vals)