**Impacted versions:** 11.0

**Steps to reproduce:** 

- Configures a user with access to several companies


![administrator odoo](https://user-images.githubusercontent.com/5775695/29488651-46b4cec2-84dd-11e7-9495-e8518e93d336.png)

**Current behavior:**

- In the accounting configuration there is shared field displayed by defects for the sales tax account and purchase tax account
![configure accounting odoo 1](https://user-images.githubusercontent.com/5775695/29488677-f5b53d12-84dd-11e7-8124-831b52423719.png)


**Expected behavior:**

The value of those fields depends on the company. The users that belong to different companies may see by default different values for the field on a given record

Video/Screenshot link (optional):


addons/account/models/chart_template.py
help="Check this if the price you use on the product and invoices includes this tax.")
    include_base_amount = fields.Boolean(string='Affect Subsequent Taxes', default=False,
        help="If set, taxes which are computed after this one will be computed based on the price tax included.")
    analytic = fields.Boolean(string="Analytic Cost", help="If set, the amount computed by this tax will be assigned to the same analytic account as the invoice line (if any)")
    tag_ids = fields.Many2many('account.account.tag', string='Account tag', help="Optional tags you may want to assign for custom reporting")
    tax_group_id = fields.Many2one('account.tax.group', string="Tax Group")
    tax_exigibility = fields.Selection(
        [('on_invoice', 'Based on Invoice'),
         ('on_payment', 'Based on Payment'),
        ], string='Tax Due', default='on_invoice',
        oldname='use_cash_basis',
        help="Based on Invoice: the tax is due as soon as the invoice is validated.\n"
        "Based on Payment: the tax is due as soon as the payment of the invoice is received.")
    cash_basis_account = fields.Many2one(
        'account.account.template',
        string='Tax Received Account',
        domain=[('deprecated', '=', False)],
        help='Account used as counterpart for the journal entry, for taxes eligible based on payments.')
    _sql_constraints = [
        ('name_company_uniq', 'unique(name, company_id, type_tax_use, chart_template_id)', 'Tax names must be unique !'),
    ]
    @api.multi
    @api.depends('name', 'description')
    def name_get(self):
        res = []
        for record in self:
            name = record.description and record.description or record.name
            res.append((record.id, name))
        return res
    def _get_tax_vals(self, company, tax_template_to_tax):