diff --git a/addons/account/account.py b/addons/account/account.py
index acbf65acf20..829b440efba 100644
--- a/addons/account/account.py
+++ b/addons/account/account.py
@@ -1551,7 +1551,7 @@ class account_tax_code(osv.osv):
         'child_ids': fields.one2many('account.tax.code', 'parent_id', 'Child Codes'),
         'line_ids': fields.one2many('account.move.line', 'tax_code_id', 'Lines'),
         'company_id': fields.many2one('res.company', 'Company', required=True),
-        'sign': fields.float('Sign for parent', required=True),
+        'sign': fields.float('Coefficent for parent', required=True, help='You can specify here the coefficient that will be used when consolidating the amount of this case into its parent. For example, set 1/-1 if you want to add/substract it.'),
         'notprintable':fields.boolean("Not Printable in Invoice", help="Check this box if you don't want any VAT related to this Tax Code to appear on invoices"),
     }
 
diff --git a/addons/account/account_view.xml b/addons/account/account_view.xml
index 8feb7e3ffdf..f6294b762c0 100644
--- a/addons/account/account_view.xml
+++ b/addons/account/account_view.xml
@@ -742,16 +742,22 @@
             <field name="type">form</field>
             <field name="arch" type="xml">
                 <form string="Account Tax Code">
-                    <field name="name" select="1"/>
-                    <field name="code" select="1"/>
-                    <field name="company_id" select="1"/>
-                    <field name="notprintable"/>
-                    <field name="parent_id" select="1"/>
-                    <field name="sign"/>
-                    <newline/>
-                    <field name="sum"/>
-                    <field name="sum_period"/>
-                    <newline/>
+                    <group col="6" colspan="4">
+                        <field name="name" select="1"/>
+                        <field name="code" select="1"/>
+                        <field name="parent_id" select="1"/>
+                        <field name="company_id" select="1" groups="base.group_multi_company"/>
+                    </group>
+                    <group colspan="2" col="2">
+                        <separator string="Reporting Configuration" colspan="4"/>
+                        <field name="notprintable"/>
+                        <field name="sign"/>
+                    </group>
+                    <group colspan="2" col="2">
+                        <separator string="Statistics" colspan="4"/>
+                        <field name="sum_period"/>
+                        <field name="sum"/>
+                    </group>
                     <separator string="Description" colspan="4"/>
                     <field colspan="4" name="info" nolabel="1"/>
                 </form>