diff --git a/hr_expense_change/__init__.py b/hr_expense_change/__init__.py
new file mode 100644
index 00000000..40272379
--- /dev/null
+++ b/hr_expense_change/__init__.py
@@ -0,0 +1 @@
+from . import wizard
diff --git a/hr_expense_change/__manifest__.py b/hr_expense_change/__manifest__.py
new file mode 100644
index 00000000..2bab2f06
--- /dev/null
+++ b/hr_expense_change/__manifest__.py
@@ -0,0 +1,31 @@
+{
+    'name': 'HR Expense Change',
+    'author': 'Hibou Corp. <hello@hibou.io>',
+    'version': '14.0.1.0.0',
+    'category': 'Employees',
+    'sequence': 95,
+    'summary': 'Technical foundation for changing expenses.',
+    'description': """
+Technical foundation for changing expenses.
+
+Creates wizard and permissions for making expense changes that can be 
+handled by other individual modules.
+
+This module implements, as examples, how to change the Date fields.
+
+Abstractly, individual 'changes' should come from specific 'fields' or capability 
+modules that handle the consequences of changing that field in whatever state the 
+the invoice is currently in.
+
+    """,
+    'website': 'https://hibou.io/',
+    'depends': [
+        'hr_expense',
+    ],
+    'data': [
+        'security/ir.model.access.csv',
+        'wizard/expense_change_views.xml',
+    ],
+    'installable': True,
+    'application': False,
+}
diff --git a/hr_expense_change/security/ir.model.access.csv b/hr_expense_change/security/ir.model.access.csv
new file mode 100644
index 00000000..f392cd8d
--- /dev/null
+++ b/hr_expense_change/security/ir.model.access.csv
@@ -0,0 +1,2 @@
+id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink
+access_hr_expense_change,access_hr_expense_change,model_hr_expense_change,hr_expense.group_hr_expense_manager,1,1,1,1
diff --git a/hr_expense_change/tests/__init__.py b/hr_expense_change/tests/__init__.py
new file mode 100644
index 00000000..431d3587
--- /dev/null
+++ b/hr_expense_change/tests/__init__.py
@@ -0,0 +1 @@
+from . import test_expense_change
diff --git a/hr_expense_change/tests/test_expense_change.py b/hr_expense_change/tests/test_expense_change.py
new file mode 100644
index 00000000..7c4cc156
--- /dev/null
+++ b/hr_expense_change/tests/test_expense_change.py
@@ -0,0 +1,154 @@
+from odoo.addons.hr_expense.tests import test_expenses
+from odoo.tests import tagged
+from odoo import fields
+
+
+@tagged('-at_install', 'post_install')
+class TestAccountEntry(test_expenses.TestExpenses):
+
+    def test_expense_values(self):
+        """ Checking accounting move entries and analytic entries when submitting expense """
+
+        # The expense employee is able to a create an expense sheet.
+        # The total should be 1725.0 because:
+        # - first line: 1000.0 (unit amount) + 150.0 (tax) = 1150.0
+        # - second line: (1500.0 (unit amount) + 225.0 (tax)) * 1/3 (rate) = 575.0.
+
+        expense_sheet = self.env['hr.expense.sheet'].create({
+            'name': 'First Expense for employee',
+            'employee_id': self.expense_employee.id,
+            'journal_id': self.company_data['default_journal_purchase'].id,
+            'accounting_date': '2017-01-01',
+            'expense_line_ids': [
+                (0, 0, {
+                    # Expense without foreign currency.
+                    'name': 'expense_1',
+                    'date': '2016-01-01',
+                    'product_id': self.product_a.id,
+                    'unit_amount': 1000.0,
+                    'tax_ids': [(6, 0, self.company_data['default_tax_purchase'].ids)],
+                    'analytic_account_id': self.analytic_account_1.id,
+                    'employee_id': self.expense_employee.id,
+                }),
+                (0, 0, {
+                    # Expense with foreign currency (rate 1:3).
+                    'name': 'expense_1',
+                    'date': '2016-01-01',
+                    'product_id': self.product_b.id,
+                    'unit_amount': 1500.0,
+                    'tax_ids': [(6, 0, self.company_data['default_tax_purchase'].ids)],
+                    'analytic_account_id': self.analytic_account_2.id,
+                    'currency_id': self.currency_data['currency'].id,
+                    'employee_id': self.expense_employee.id,
+                }),
+            ],
+        })
+
+        # Check expense sheet values.
+        self.assertRecordValues(expense_sheet, [{'state': 'draft', 'total_amount': 1725.0}])
+
+        expense_sheet.action_submit_sheet()
+        expense_sheet.approve_expense_sheets()
+        expense_sheet.action_sheet_move_create()
+
+        # Check expense sheet journal entry values.
+        self.assertRecordValues(expense_sheet.account_move_id.line_ids.sorted('balance'), [
+            # Receivable line (company currency):
+            {
+                'debit': 0.0,
+                'credit': 1150.0,
+                'amount_currency': -1150.0,
+                'account_id': self.company_data['default_account_payable'].id,
+                'product_id': False,
+                'currency_id': self.company_data['currency'].id,
+                'tax_line_id': False,
+                'analytic_account_id': False,
+            },
+            # Receivable line (foreign currency):
+            {
+                'debit': 0.0,
+                'credit': 862.5,
+                'amount_currency': -1725.0,
+                'account_id': self.company_data['default_account_payable'].id,
+                'product_id': False,
+                'currency_id': self.currency_data['currency'].id,
+                'tax_line_id': False,
+                'analytic_account_id': False,
+            },
+            # Tax line (foreign currency):
+            {
+                'debit': 112.5,
+                'credit': 0.0,
+                'amount_currency': 225.0,
+                'account_id': self.company_data['default_account_tax_purchase'].id,
+                'product_id': False,
+                'currency_id': self.currency_data['currency'].id,
+                'tax_line_id': self.company_data['default_tax_purchase'].id,
+                'analytic_account_id': False,
+            },
+            # Tax line (company currency):
+            {
+                'debit': 150.0,
+                'credit': 0.0,
+                'amount_currency': 150.0,
+                'account_id': self.company_data['default_account_tax_purchase'].id,
+                'product_id': False,
+                'currency_id': self.company_data['currency'].id,
+                'tax_line_id': self.company_data['default_tax_purchase'].id,
+                'analytic_account_id': False,
+            },
+            # Product line (foreign currency):
+            {
+                'debit': 750.0,
+                'credit': 0.0,
+                'amount_currency': 1500.0,
+                'account_id': self.company_data['default_account_expense'].id,
+                'product_id': self.product_b.id,
+                'currency_id': self.currency_data['currency'].id,
+                'tax_line_id': False,
+                'analytic_account_id': self.analytic_account_2.id,
+            },
+            # Product line (company currency):
+            {
+                'debit': 1000.0,
+                'credit': 0.0,
+                'amount_currency': 1000.0,
+                'account_id': self.company_data['default_account_expense'].id,
+                'product_id': self.product_a.id,
+                'currency_id': self.company_data['currency'].id,
+                'tax_line_id': False,
+                'analytic_account_id': self.analytic_account_1.id,
+            },
+        ])
+
+        # Check expense analytic lines.
+        self.assertRecordValues(expense_sheet.account_move_id.line_ids.analytic_line_ids.sorted('amount'), [
+            {
+                'amount': -1000.0,
+                'date': fields.Date.from_string('2017-01-01'),
+                'account_id': self.analytic_account_1.id,
+                'currency_id': self.company_data['currency'].id,
+            },
+            {
+                'amount': -750.0,
+                'date': fields.Date.from_string('2017-01-01'),
+                'account_id': self.analytic_account_2.id,
+                'currency_id': self.company_data['currency'].id,
+            },
+        ])
+        
+        # actual test
+        self.assertEqual(expense_sheet.accounting_date, expense_sheet.account_move_id.date)
+
+        expense = expense_sheet.expense_line_ids[0]
+
+        ctx = {'active_model': 'hr.expense', 'active_ids': expense.ids}
+        change = self.env['hr.expense.change'].sudo(flag=True).with_context(ctx).create({})
+        self.assertEqual(change.date, expense.date)
+
+        change_date = '2018-01-01'
+        change.write({'date': change_date})
+
+        change.affect_change()
+        self.assertEqual(change_date, str(expense.date))
+        self.assertEqual(change_date, str(expense_sheet.account_move_id.date))
diff --git a/hr_expense_change/wizard/__init__.py b/hr_expense_change/wizard/__init__.py
new file mode 100644
index 00000000..72a7c8d3
--- /dev/null
+++ b/hr_expense_change/wizard/__init__.py
@@ -0,0 +1 @@
+from . import expense_change
diff --git a/hr_expense_change/wizard/expense_change.py b/hr_expense_change/wizard/expense_change.py
new file mode 100644
index 00000000..d3250352
--- /dev/null
+++ b/hr_expense_change/wizard/expense_change.py
@@ -0,0 +1,54 @@
+from odoo import api, fields, models, _
+from odoo.exceptions import UserError
+
+
+class ExpenseChangeWizard(models.TransientModel):
+    _name = 'hr.expense.change'
+    _description = 'Expense Change'
+
+    expense_id = fields.Many2one('hr.expense', string='Expense', readonly=True, required=True)
+    expense_company_id = fields.Many2one('res.company', related='expense_id.company_id')
+    date = fields.Date(string='Expense Date')
+
+    @api.model
+    def default_get(self, fields):
+        rec = super(ExpenseChangeWizard, self).default_get(fields)
+        context = dict(self._context or {})
+        active_model = context.get('active_model')
+        active_ids = context.get('active_ids')
+
+        # Checks on context parameters
+        if not active_model or not active_ids:
+            raise UserError(
+                _("Programmation error: wizard action executed without active_model or active_ids in context."))
+        if active_model != 'hr.expense':
+            raise UserError(_(
+                "Programmation error: the expected model for this action is 'hr.expense'. The provided one is '%d'.") % active_model)
+
+        # Checks on received expense records
+        expense = self.env[active_model].browse(active_ids)
+        if len(expense) != 1:
+            raise UserError(_("Expense Change expects only one expense."))
+        rec.update({
+            'expense_id': expense.id,
+            'date': expense.date,
+        })
+        return rec
+
+    def _new_expense_vals(self):
+        vals = {}
+        if self.expense_id.date != self.date:
+            vals['date'] = self.date
+        return vals
+
+    def affect_change(self):
+        self.ensure_one()
+        vals = self._new_expense_vals()
+        old_date = self.expense_id.date
+        if vals:
+            self.expense_id.write(vals)
+        if 'date' in vals and self.expense_id.sheet_id.account_move_id:
+            self.expense_id.sheet_id.account_move_id.write({'date': vals['date']})
+            self.expense_id.sheet_id.account_move_id.line_ids\
+                .filtered(lambda l: l.date_maturity == old_date).write({'date_maturity': vals['date']})
+        return True
diff --git a/hr_expense_change/wizard/expense_change_views.xml b/hr_expense_change/wizard/expense_change_views.xml
new file mode 100644
index 00000000..95250bc6
--- /dev/null
+++ b/hr_expense_change/wizard/expense_change_views.xml
@@ -0,0 +1,65 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<odoo>
+
+    <record id="hr_expense_change_form" model="ir.ui.view">
+        <field name="name">Expense Change</field>
+        <field name="model">hr.expense.change</field>
+        <field name="arch" type="xml">
+            <form string="Expense Change">
+                <group>
+                    <group name="group_left">
+                        <field name="expense_id" invisible="1"/>
+                        <field name="expense_company_id" invisible="1"/>
+                        <field name="date"/>
+                    </group>
+                    <group name="group_right"/>
+                </group>
+                <footer>
+                    <button name="affect_change" string="Change" type="object" class="btn-primary"/>
+                    <button string="Cancel" class="btn-default" special="cancel"/>
+                </footer>
+            </form>
+        </field>
+    </record>
+
+    <record id="action_view_hr_expense_change" model="ir.actions.act_window">
+        <field name="name">Expense Change Wizard</field>
+        <field name="type">ir.actions.act_window</field>
+        <field name="res_model">hr.expense.change</field>
+        <field name="view_mode">form</field>
+        <field name="target">new</field>
+    </record>
+
+    <!-- Add Button to Existing Forms -->
+    <record id="hr_expense_view_form_inherit" model="ir.ui.view">
+        <field name="name">hr.expense.form.inherit</field>
+        <field name="model">hr.expense</field>
+        <field name="inherit_id" ref="hr_expense.hr_expense_view_form"/>
+        <field name="arch" type="xml">
+            <xpath expr="//field[@name='state']" position="before">
+                <button name="%(action_view_hr_expense_change)d" string="Change"
+                        type="action" class="btn-secondary"
+                        attrs="{'invisible': [('state', 'in', ('draft', 'refused'))]}"
+                        context="{'default_expense_id': active_id}"
+                        groups="account.group_account_manager" />
+            </xpath>
+       </field>
+    </record>
+
+    <record id="view_hr_expense_sheet_form_inherit" model="ir.ui.view">
+        <field name="name">hr.expense.sheet.form.inherit</field>
+        <field name="model">hr.expense.sheet</field>
+        <field name="inherit_id" ref="hr_expense.view_hr_expense_sheet_form"/>
+        <field name="arch" type="xml">
+            <xpath expr="//field[@name='expense_line_ids']/tree" position="inside">
+                <field name="id" invisible="1"/>
+                <button name="%(action_view_hr_expense_change)d" string="Change" icon="fa-exchange"
+                        type="action"
+                        attrs="{'invisible': [('state', 'in', ('draft', 'refused'))]}"
+                        context="{'default_expense_id': id}"
+                        groups="account.group_account_manager" />
+            </xpath>
+       </field>
+    </record>
+
+</odoo>
\ No newline at end of file