diff --git a/addons/at_accounting/models/account_journal_csv.py b/addons/at_accounting/models/account_journal_csv.py
new file mode 100644
index 0000000..2add424
--- /dev/null
+++ b/addons/at_accounting/models/account_journal_csv.py
@@ -0,0 +1,48 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from odoo import _, models
+from odoo.exceptions import UserError
+
+
+class AccountJournal(models.Model):
+    _inherit = 'account.journal'
+
+    def _get_bank_statements_available_import_formats(self):
+        rslt = super()._get_bank_statements_available_import_formats()
+        rslt.extend(['CSV', 'XLS', 'XLSX'])
+        return rslt
+
+    def _check_file_format(self, filename):
+        return filename and filename.lower().strip().endswith(('.csv', '.xls', '.xlsx'))
+
+    def _import_bank_statement(self, attachments):
+        # In case of CSV files, only one file can be imported at a time.
+        if len(attachments) > 1:
+            csv = [bool(self._check_file_format(att.name)) for att in attachments]
+            if True in csv and False in csv:
+                raise UserError(_('Mixing CSV files with other file types is not allowed.'))
+            if csv.count(True) > 1:
+                raise UserError(_('Only one CSV file can be selected.'))
+            return super()._import_bank_statement(attachments)
+
+        if not self._check_file_format(attachments.name):
+            return super()._import_bank_statement(attachments)
+        ctx = dict(self.env.context)
+        import_wizard = self.env['base_import.import'].create({
+            'res_model': 'account.bank.statement.line',
+            'file': attachments.raw,
+            'file_name': attachments.name,
+            'file_type': attachments.mimetype,
+        })
+        ctx['wizard_id'] = import_wizard.id
+        ctx['default_journal_id'] = self.id
+        return {
+            'type': 'ir.actions.client',
+            'tag': 'import_bank_stmt',
+            'params': {
+                'model': 'account.bank.statement.line',
+                'context': ctx,
+                'filename': 'bank_statement_import.csv',
+            }
+        }