diff --git a/pos_statement_closing_balance/__init__.py b/pos_statement_closing_balance/__init__.py
new file mode 100644
index 00000000..976591c9
--- /dev/null
+++ b/pos_statement_closing_balance/__init__.py
@@ -0,0 +1,2 @@
+from . import wizards
+from . import models
diff --git a/pos_statement_closing_balance/__manifest__.py b/pos_statement_closing_balance/__manifest__.py
new file mode 100644
index 00000000..84cb0a00
--- /dev/null
+++ b/pos_statement_closing_balance/__manifest__.py
@@ -0,0 +1,22 @@
+# Copyright 2020 ForgeFlow, S.L.
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).
+
+{
+    'name': 'POS Statement Closing Balance',
+    'version': '12.0.1.0.1',
+    'category': 'Point Of Sale',
+    'summary': 'Allows to set a closing balance in your statements and '
+               'auto-post the difference between theoretical and actual.',
+    'author': 'ForgeFlow, Odoo Community Association (OCA)',
+    'website': 'http://www.github.com/OCA/pos',
+    'license': 'AGPL-3',
+    'depends': [
+        'pos_cash_box_journal',
+    ],
+    'data': [
+        'wizards/pos_update_statement_closing_balance.xml',
+        'views/pos_session_views.xml',
+        'views/account_journal_views.xml',
+    ],
+    'installable': True,
+}
diff --git a/pos_statement_closing_balance/models/__init__.py b/pos_statement_closing_balance/models/__init__.py
new file mode 100644
index 00000000..7107db85
--- /dev/null
+++ b/pos_statement_closing_balance/models/__init__.py
@@ -0,0 +1,2 @@
+from . import pos_session
+from . import account_journal
diff --git a/pos_statement_closing_balance/models/account_journal.py b/pos_statement_closing_balance/models/account_journal.py
new file mode 100644
index 00000000..42d46017
--- /dev/null
+++ b/pos_statement_closing_balance/models/account_journal.py
@@ -0,0 +1,10 @@
+# Copyright 2020 ForgeFlow, S.L.
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).
+from odoo import fields, models
+
+
+class AccountJournal(models.Model):
+    _inherit = 'account.journal'
+
+    pos_control_ending_balance = fields.Boolean(
+        'Control ending balance in POS')
diff --git a/pos_statement_closing_balance/models/pos_session.py b/pos_statement_closing_balance/models/pos_session.py
new file mode 100644
index 00000000..c7703825
--- /dev/null
+++ b/pos_statement_closing_balance/models/pos_session.py
@@ -0,0 +1,48 @@
+# Copyright 2020 ForgeFlow, S.L.
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).
+from odoo import api, fields, models, _
+from odoo.exceptions import ValidationError
+
+
+class PosSession(models.Model):
+    _inherit = "pos.session"
+
+    ending_balances_to_update = fields.Boolean(
+        compute='_compute_ending_balances_to_update')
+
+    @api.multi
+    def _compute_ending_balances_to_update(self):
+        for rec in self:
+            rec.ending_balances_to_update = False
+            for statement in rec.statement_ids:
+                journal = statement.journal_id
+                if journal.pos_control_ending_balance and \
+                    journal.type != 'cash' or (journal.type == 'cash' and
+                                               not rec.cash_control):
+                    rec.ending_balances_to_update = True
+
+    @api.multi
+    def button_update_statement_ending_balance(self):
+        self.ensure_one()
+        action = self.env.ref(
+            "pos_statement_closing_balance."
+            "action_pos_update_bank_statement_closing_balance")
+        result = action.read()[0]
+        return result
+
+    @api.multi
+    def _check_pos_session_bank_balance(self):
+        for session in self:
+            for statement in session.statement_ids:
+                if statement.journal_id.pos_control_ending_balance and \
+                    (statement != session.cash_register_id) and (
+                        statement.balance_end != statement.balance_end_real):
+                    raise ValidationError(_(
+                        'Mismatch in the closing balance '
+                        'for a non-cash statement.'))
+        return True
+
+    @api.multi
+    def action_pos_session_closing_control(self):
+        self._check_pos_session_bank_balance()
+        return super(PosSession, self).action_pos_session_closing_control()
diff --git a/pos_statement_closing_balance/readme/CONFIGURATION.rst b/pos_statement_closing_balance/readme/CONFIGURATION.rst
new file mode 100644
index 00000000..e305b792
--- /dev/null
+++ b/pos_statement_closing_balance/readme/CONFIGURATION.rst
@@ -0,0 +1,3 @@
+* Go to *Invoicing > Configuration > Journals* and set, for each Journal
+  that will be used in the POS, the flag 'Control ending balance in POS' if
+  you expect users to enter the ending balance.
diff --git a/pos_statement_closing_balance/readme/CONTRIBUTORS.rst b/pos_statement_closing_balance/readme/CONTRIBUTORS.rst
new file mode 100644
index 00000000..38b52533
--- /dev/null
+++ b/pos_statement_closing_balance/readme/CONTRIBUTORS.rst
@@ -0,0 +1,3 @@
+* ForgeFlow
+    * Jordi Ballester Alomar <jordi.ballester@forgeflow.com>
+
diff --git a/pos_statement_closing_balance/readme/DESCRIPTION.rst b/pos_statement_closing_balance/readme/DESCRIPTION.rst
new file mode 100644
index 00000000..572f9550
--- /dev/null
+++ b/pos_statement_closing_balance/readme/DESCRIPTION.rst
@@ -0,0 +1,8 @@
+This module extends the functionality of point of sale to allow users to input
+the ending balances of the payment methods when they close a POS Session.
+The system will then post the difference to the 'Liquidity Transfers' account.
+
+Currently it's only possible to define the ending balance for the cash
+if you configure "Cash Control" in the POS Configuration. But that setting
+will not allow users to enter the ending balances for credit card transactions
+, for example.
diff --git a/pos_statement_closing_balance/readme/USAGE.rst b/pos_statement_closing_balance/readme/USAGE.rst
new file mode 100644
index 00000000..bd0392f2
--- /dev/null
+++ b/pos_statement_closing_balance/readme/USAGE.rst
@@ -0,0 +1,7 @@
+* Go to *Point of Sale*, then to a session and go to *Settings*.
+* Define the payment methods that you want to use.
+* Start the Session and create some POS orders.
+* Go back to the POS Session and press "Close".
+* Press the button "Update Ending Balances" in the POS Session, and enter
+  the final balance in the column "Balance End Real".
+
diff --git a/pos_statement_closing_balance/tests/__init__.py b/pos_statement_closing_balance/tests/__init__.py
new file mode 100644
index 00000000..13c5ff1e
--- /dev/null
+++ b/pos_statement_closing_balance/tests/__init__.py
@@ -0,0 +1 @@
+from . import test_pos_statement_closing_balance
diff --git a/pos_statement_closing_balance/tests/test_pos_statement_closing_balance.py b/pos_statement_closing_balance/tests/test_pos_statement_closing_balance.py
new file mode 100644
index 00000000..e9d551f6
--- /dev/null
+++ b/pos_statement_closing_balance/tests/test_pos_statement_closing_balance.py
@@ -0,0 +1,65 @@
+# Copyright 2020 ForgeFlow, S.L.
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).
+from odoo.tests.common import TransactionCase
+from odoo.exceptions import ValidationError
+
+
+class TestPosStatementClosingBalance(TransactionCase):
+    def setUp(self):
+        super(TestPosStatementClosingBalance, self).setUp()
+        self.pos_config = self.env["pos.config"].create({"name": "PoS config"})
+        bank_journal = self.env["account.journal"].create({
+            "name": "Test bank",
+            "code": "TB1",
+            "type": "bank",
+            "pos_control_ending_balance": True,
+        })
+        self.pos_config.journal_ids += bank_journal
+        self.pos_config.open_session_cb()
+        self.session = self.pos_config.current_session_id
+        self.session.action_pos_session_open()
+
+    def test_wizard(self):
+        journal = self.session.journal_ids.filtered(lambda j: j.code == 'TB1')
+        wizard = (
+            self.env["cash.box.journal.in"]
+            .with_context(
+                active_model="pos.session", active_ids=self.session.ids
+            )
+            .create({"amount": 10, "name": "Out"})
+        )
+        wizard.journal_id = journal
+        wizard.run()
+        self.assertEqual(
+            self.session.statement_ids.filtered(
+                lambda r: r.journal_id.id == journal.id
+            ).difference,
+            -10.0,
+        )
+        with self.assertRaises(ValidationError):
+            self.session.action_pos_session_closing_control()
+
+        wizard = (
+            self.env["pos.update.bank.statement.closing.balance"]
+            .with_context(
+                active_model="pos.session", active_ids=self.session.ids
+            )
+            .create({})
+        )
+        for item in wizard.item_ids:
+            item.balance_end_real = 2.0
+        wizard.action_confirm()
+        self.assertEqual(
+            self.session.statement_ids.filtered(
+                lambda r: r.journal_id.id == journal.id
+            ).balance_end,
+            2.0,
+        )
+        self.assertEqual(
+            self.session.statement_ids.filtered(
+                lambda r: r.journal_id.id == journal.id
+            ).difference,
+            0,
+        )
+        self.session.action_pos_session_closing_control()
+        self.assertEqual(self.session.state, 'closed')
diff --git a/pos_statement_closing_balance/views/account_journal_views.xml b/pos_statement_closing_balance/views/account_journal_views.xml
new file mode 100644
index 00000000..675b8417
--- /dev/null
+++ b/pos_statement_closing_balance/views/account_journal_views.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <record id="view_account_journal_form" model="ir.ui.view">
+        <field name="name">account.journal.form</field>
+        <field name="model">account.journal</field>
+        <field name="inherit_id" ref="account.view_account_journal_form"/>
+        <field name="arch" type="xml">
+            <field name="type" position="after">
+                <field name="pos_control_ending_balance"/>
+            </field>
+        </field>
+    </record>
+</odoo>
diff --git a/pos_statement_closing_balance/views/pos_session_views.xml b/pos_statement_closing_balance/views/pos_session_views.xml
new file mode 100644
index 00000000..fecc9a90
--- /dev/null
+++ b/pos_statement_closing_balance/views/pos_session_views.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<odoo>
+    <record id="view_pos_session_form" model="ir.ui.view">
+        <field name="name">pos.session.form.view</field>
+        <field name="model">pos.session</field>
+        <field name="inherit_id" ref="point_of_sale.view_pos_session_form"/>
+        <field name="arch" type="xml">
+            <button name="open_cashbox" position="after">
+                <button name="button_update_statement_ending_balance"
+                    class="oe_stat_button"
+                    attrs="{'invisible':[('state', '=', 'closed')]}"
+                    icon="fa-money"
+                    type="object" context="{'balance': 'end'}">
+                    <span class="o_stat_text">Update Ending Balances</span>
+                </button>
+            </button>
+        </field>
+    </record>
+</odoo>
diff --git a/pos_statement_closing_balance/wizards/__init__.py b/pos_statement_closing_balance/wizards/__init__.py
new file mode 100644
index 00000000..8905d18d
--- /dev/null
+++ b/pos_statement_closing_balance/wizards/__init__.py
@@ -0,0 +1 @@
+from . import pos_update_statement_closing_balance
diff --git a/pos_statement_closing_balance/wizards/pos_update_statement_closing_balance.py b/pos_statement_closing_balance/wizards/pos_update_statement_closing_balance.py
new file mode 100644
index 00000000..05f32dd4
--- /dev/null
+++ b/pos_statement_closing_balance/wizards/pos_update_statement_closing_balance.py
@@ -0,0 +1,121 @@
+# Copyright 2020 ForgeFlow, S.L.
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl.html).
+from odoo import api, fields, models, _
+from odoo.exceptions import UserError
+
+
+class POSBankStatementUpdateClosingBalance(models.TransientModel):
+    _name = "pos.update.bank.statement.closing.balance"
+    _description = 'POS Update Bank Statement Closing Balance'
+
+    session_id = fields.Many2one(
+        comodel_name='pos.session',
+    )
+    item_ids = fields.One2many(
+        comodel_name="pos.update.bank.statement.closing.balance.line",
+        inverse_name="wiz_id",
+        string="Items",
+    )
+
+    @api.model
+    def _prepare_item(self, session, statement):
+        return {
+            "statement_id": statement.id,
+            "name": statement.name,
+            "journal_id": statement.journal_id.id,
+            "balance_start": statement.balance_start,
+            "total_entry_encoding": statement.total_entry_encoding,
+            "currency_id": statement.currency_id.id,
+        }
+
+    @api.model
+    def default_get(self, flds):
+        res = super().default_get(flds)
+        session_obj = self.env["pos.session"]
+        active_ids = self.env.context["active_ids"] or []
+        active_model = self.env.context["active_model"]
+
+        if not active_ids:
+            return res
+        assert active_model == "pos.session", \
+            "Bad context propagation"
+
+        items = []
+        if len(active_ids) > 1:
+            raise UserError(_('You cannot start the closing '
+                              'balance for multiple POS sessions'))
+        session = session_obj.browse(active_ids[0])
+        for statement in session.statement_ids:
+            if statement.journal_id.type != 'cash' or \
+                (statement.journal_id.type == 'cash' and
+                 not session.cash_control):
+                items.append([0, 0, self._prepare_item(session, statement)])
+        res["session_id"] = session.id
+        res["item_ids"] = items
+        return res
+
+    @api.model
+    def _prepare_cash_box_journal(self, item):
+        return {
+            'amount': abs(item.difference),
+            'name': _('Out'),
+            "journal_id": item.journal_id.id,
+        }
+
+    @api.multi
+    def action_confirm(self):
+        self.ensure_one()
+        for item in self.item_ids:
+            if item.difference:
+                if item.difference > 0.0:
+                    model = "cash.box.journal.in"
+                else:
+                    model = "cash.box.journal.out"
+                wizard = (
+                    self.env[model]
+                        .with_context(
+                        active_model="pos.session",
+                        active_ids=self.session_id.ids
+                    ).create(self._prepare_cash_box_journal(item))
+                )
+                wizard.run()
+                item.statement_id.balance_end_real = item.balance_end_real
+        return True
+
+
+class BankStatementLineUpdateEndingBalanceLine(models.TransientModel):
+    _name = "pos.update.bank.statement.closing.balance.line"
+    _description = 'POS Update Bank Statement Closing Balance Line'
+
+    wiz_id = fields.Many2one(
+        comodel_name='pos.update.bank.statement.closing.balance',
+        required=True,
+    )
+    statement_id = fields.Many2one(
+        comodel_name='account.bank.statement',
+    )
+    name = fields.Char(
+        related='statement_id.name'
+    )
+    journal_id = fields.Many2one(
+        comodel_name='account.journal',
+        related='statement_id.journal_id',
+    )
+    balance_start = fields.Monetary(
+        related='statement_id.balance_start',
+    )
+    total_entry_encoding = fields.Monetary(
+        related='statement_id.total_entry_encoding',
+    )
+    balance_end = fields.Monetary(compute='_compute_balance_end')
+    balance_end_real = fields.Monetary(default=0.0)
+    difference = fields.Monetary(compute='_compute_balance_end')
+    currency_id = fields.Many2one(
+        comodel_name='res.currency',
+        related='statement_id.currency_id'
+    )
+
+    def _compute_balance_end(self):
+        for rec in self:
+            rec.balance_end = rec.balance_start + rec.total_entry_encoding
+            rec.difference = rec.balance_end_real - rec.balance_end
diff --git a/pos_statement_closing_balance/wizards/pos_update_statement_closing_balance.xml b/pos_statement_closing_balance/wizards/pos_update_statement_closing_balance.xml
new file mode 100644
index 00000000..74c79c9f
--- /dev/null
+++ b/pos_statement_closing_balance/wizards/pos_update_statement_closing_balance.xml
@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<odoo>
+    <record id="pos_update_bank_statement_closing_balance_form" model="ir.ui.view">
+        <field name="name">pos.update.bank.statement.closing.balance.form</field>
+        <field name="model">pos.update.bank.statement.closing.balance</field>
+        <field name="type">form</field>
+        <field name="arch" type="xml">
+            <form string="Update Ending Balance">
+                <field name="item_ids" nolabel="1">
+                    <tree string="Statements" create="0" editable="top">
+                        <field name="name"/>
+                        <field name="journal_id"/>
+                        <field name="balance_start"/>
+                        <field name="total_entry_encoding"/>
+                        <field name="balance_end_real"/>
+                        <field name="currency_id" groups="base.group_multi_currency"/>
+                    </tree>
+                </field>
+                <footer>
+                    <button name="action_confirm" string="Confirm" type="object" class="btn-primary"/>
+                    <button special="cancel" string="Cancel" class="btn-default"/>
+                </footer>
+            </form>
+        </field>
+    </record>
+
+    <record model="ir.actions.act_window" id="action_pos_update_bank_statement_closing_balance">
+        <field name="name">Update Ending Balances</field>
+        <field name="res_model">pos.update.bank.statement.closing.balance</field>
+        <field name="view_mode">form</field>
+        <field name="target">new</field>
+    </record>
+</odoo>