diff --git a/l10n_jp_summary_invoice/__manifest__.py b/l10n_jp_summary_invoice/__manifest__.py
index d0191a7..3de962d 100644
--- a/l10n_jp_summary_invoice/__manifest__.py
+++ b/l10n_jp_summary_invoice/__manifest__.py
@@ -13,7 +13,6 @@
     "data": [
         "reports/report.xml",
         "reports/report_summary_invoice.xml",
-        "views/account_account_tag_views.xml",
         "views/account_billing_views.xml",
     ],
     "installable": True,
diff --git a/l10n_jp_summary_invoice/models/__init__.py b/l10n_jp_summary_invoice/models/__init__.py
index 8d22a58..c43433a 100644
--- a/l10n_jp_summary_invoice/models/__init__.py
+++ b/l10n_jp_summary_invoice/models/__init__.py
@@ -1,2 +1 @@
 from . import account_billing
-from . import account_account_tag
diff --git a/l10n_jp_summary_invoice/models/account_account_tag.py b/l10n_jp_summary_invoice/models/account_account_tag.py
deleted file mode 100644
index c63297b..0000000
--- a/l10n_jp_summary_invoice/models/account_account_tag.py
+++ /dev/null
@@ -1,10 +0,0 @@
-# Copyright 2024 Quartile (https://www.quartile.co)
-# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).
-
-from odoo import models, fields, api
-
-
-class AccountAccounttag(models.Model):
-    _inherit = 'account.account.tag'
-
-    is_use_in_tax_adjustment = fields.Boolean(help="If enabled, this will be used as the tax grid in adjustment tax records.")
diff --git a/l10n_jp_summary_invoice/models/account_billing.py b/l10n_jp_summary_invoice/models/account_billing.py
index 15703e1..30e274b 100644
--- a/l10n_jp_summary_invoice/models/account_billing.py
+++ b/l10n_jp_summary_invoice/models/account_billing.py
@@ -18,7 +18,7 @@ def _get_tax_summary_from_invoices(self):
         tax_summary = {}
         for line in self.billing_line_ids:
             invoice = line.move_id
-            for tax_line in invoice.line_ids.filtered(lambda l: l.tax_line_id):
+            for tax_line in invoice.line_ids.filtered(lambda line: line.display_type == 'tax' or (line.display_type == 'rounding' and line.tax_repartition_line_id)):
                 tax = tax_line.tax_line_id
                 tax_summary[tax] = tax_summary.get(tax, 0) + tax_line.credit
         return tax_summary
diff --git a/l10n_jp_summary_invoice/views/account_account_tag_views.xml b/l10n_jp_summary_invoice/views/account_account_tag_views.xml
deleted file mode 100644
index 44fb439..0000000
--- a/l10n_jp_summary_invoice/views/account_account_tag_views.xml
+++ /dev/null
@@ -1,12 +0,0 @@
-<odoo>
-    <record id="view_account_account_tag_form_inherit" model="ir.ui.view">
-        <field name="name">account.account.tag.form.inherit</field>
-        <field name="model">account.account.tag</field>
-        <field name="inherit_id" ref="account.account_tag_view_form"/>
-        <field name="arch" type="xml">
-            <xpath expr="//field[@name='applicability']" position="after">
-                <field name="is_use_in_tax_adjustment" attrs="{'invisible': [('applicability', '!=', 'taxes')]}" />
-            </xpath>
-        </field>
-    </record>
-</odoo>