flectra/addons/base_vat_autocomplete/views/res_company_view.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- 
  The purpose of this view is to move the VAT field at the top of the 
  company form. That way, the user will fill it first
-->
<flectra>
    <record id="res_company_view_form" model="ir.ui.view">
        <field name="name">res.company.view.form</field>
        <field name="model">res.company</field>
        <field name="inherit_id" ref="base.view_company_form"/>
        <field name="arch" type="xml">
            <xpath expr="//field[@name='vat']" position="replace" />
            <field name="partner_id" position="after">
                <field name="vat" string="VAT"/>
            </field>
        </field>
    </record>
</flectra>