diff --git a/payment.py b/payment.py
index 5492145e14..90a3f2b397 100644
--- a/payment.py
+++ b/payment.py
@@ -124,6 +124,22 @@ class Payment(metaclass=PoolMeta):
     clearing_move = fields.Many2One('account.move', 'Clearing Move',
         readonly=True)
 
+    @property
+    def amount_line_paid(self):
+        amount = super().amount_line_paid
+
+        if self.clearing_move:
+            clearing_line = [l for l in self.clearing_move.lines
+                if l.account == self.clearing_account][0]
+            if (not self.line.reconciliation
+                    and clearing_line.reconciliation):
+                if self.line.second_currency:
+                    payment_amount = abs(self.line.amount_second_currency)
+                else:
+                    payment_amount = abs(self.line.credit - self.line.debit)
+                amount -= max(min(self.amount, payment_amount), 0)
+        return amount
+
     @classmethod
     def __setup__(cls):
         super(Payment, cls).__setup__()
diff --git a/setup.py b/setup.py
index fd38e34f09..443173a430 100755
--- a/setup.py
+++ b/setup.py
@@ -66,6 +66,7 @@ requires.append(get_require_version('trytond'))
 tests_require = [get_require_version('proteus'),
     get_require_version('trytond_account_statement'),
     get_require_version('trytond_account_statement_rule'),
+    get_require_version('trytond_account_invoice'),
     'python-dateutil']
 dependency_links = []
 if minor_version % 2:
diff --git a/tests/scenario_invoice_amount_to_pay.rst b/tests/scenario_invoice_amount_to_pay.rst
new file mode 100644
index 0000000000..d58abbec70
--- /dev/null
+++ b/tests/scenario_invoice_amount_to_pay.rst
@@ -0,0 +1,176 @@
+=====================
+Invoice Amount to Pay
+=====================
+
+Imports::
+    >>> import datetime
+    >>> from dateutil.relativedelta import relativedelta
+    >>> from decimal import Decimal
+    >>> from proteus import Model, Wizard
+    >>> from trytond.tests.tools import activate_modules
+    >>> from trytond.modules.currency.tests.tools import get_currency
+    >>> from trytond.modules.company.tests.tools import (
+    ...     create_company, get_company)
+    >>> from trytond.modules.account.tests.tools import (
+    ...     create_fiscalyear, create_chart, get_accounts)
+    >>> from trytond.modules.account_invoice.tests.tools import (
+    ...     set_fiscalyear_invoice_sequences)
+    >>> today = datetime.date.today()
+    >>> yesterday = today - relativedelta(days=1)
+    >>> first = today  + relativedelta(day=1)
+
+Activate modules::
+
+    >>> config = activate_modules(
+    ...     ['account_payment_clearing', 'account_invoice'])
+
+Create company::
+
+    >>> _ = create_company()
+    >>> company = get_company()
+
+Create fiscal year::
+
+    >>> fiscalyear = set_fiscalyear_invoice_sequences(
+    ...     create_fiscalyear(company))
+    >>> fiscalyear.click('create_period')
+
+Create chart of accounts::
+
+    >>> _ = create_chart(company)
+    >>> accounts = get_accounts(company)
+    >>> receivable = accounts['receivable']
+    >>> revenue = accounts['revenue']
+    >>> expense = accounts['expense']
+    >>> payable = accounts['payable']
+    >>> cash = accounts['cash']
+
+    >>> Account = Model.get('account.account')
+    >>> bank_clearing = Account(parent=payable.parent)
+    >>> bank_clearing.name = 'Bank Clearing'
+    >>> bank_clearing.type = payable.type
+    >>> bank_clearing.reconcile = True
+    >>> bank_clearing.deferral = True
+    >>> bank_clearing.save()
+
+    >>> Journal = Model.get('account.journal')
+    >>> expense_journal, = Journal.find([('code', '=', 'EXP')])
+    >>> revenue_journal, = Journal.find([('code', '=', 'REV')])
+
+Create payment journal::
+
+    >>> PaymentJournal = Model.get('account.payment.journal')
+    >>> payment_journal = PaymentJournal(name='No Clearing',
+    ...     process_method='manual')
+    >>> payment_journal.save()
+    >>> clearing_journal = PaymentJournal(name='Clearing',
+    ...     process_method='manual', clearing_journal=expense,
+    ...     clearing_account=bank_clearing)
+    >>> clearing_journal.save()
+
+Create parties::
+
+    >>> Party = Model.get('party.party')
+    >>> supplier = Party(name='Supplier')
+    >>> supplier.save()
+    >>> customer = Party(name='Customer')
+    >>> customer.save()
+
+Create and pay an invoice without clearing::
+
+    >>> Invoice = Model.get('account.invoice')
+    >>> invoice = Invoice()
+    >>> invoice.party = customer
+    >>> line = invoice.lines.new()
+    >>> line.account = revenue
+    >>> line.quantity = 1
+    >>> line.unit_price = Decimal('100')
+    >>> invoice.save()
+    >>> invoice.click('post')
+    >>> invoice.amount_to_pay
+    Decimal('100.00')
+
+    >>> paid_line, = [l for l in invoice.move.lines if l.account == receivable]
+    >>> pay_line = Wizard('account.move.line.pay', [paid_line])
+    >>> pay_line.execute('next_')
+    >>> pay_line.form.journal = payment_journal
+    >>> pay_line.execute('next_')
+
+    >>> Payment = Model.get('account.payment')
+    >>> payment, = Payment.find()
+    >>> payment.click('approve')
+    >>> payment.state
+    'approved'
+    >>> process_payment = Wizard('account.payment.process', [payment])
+    >>> process_payment.execute('process')
+    >>> payment.reload()
+    >>> succeed = Wizard('account.payment.succeed', [payment])
+    >>> succeed.execute('succeed')
+
+    >>> invoice.reload()
+    >>> invoice.amount_to_pay
+    Decimal('0.00')
+
+Create an invoice and pay it::
+
+    >>> invoice1 = Invoice()
+    >>> invoice1.party = customer
+    >>> line = invoice1.lines.new()
+    >>> line.account = revenue
+    >>> line.quantity = 1
+    >>> line.unit_price = Decimal('100')
+    >>> invoice1.save()
+    >>> invoice1.click('post')
+    >>> invoice1.amount_to_pay
+    Decimal('100.00')
+
+    >>> paid_line, = [l for l in invoice1.move.lines if l.account == receivable]
+    >>> pay_line = Wizard('account.move.line.pay', [paid_line])
+    >>> pay_line.execute('next_')
+    >>> pay_line.form.journal = clearing_journal
+    >>> pay_line.execute('next_')
+
+    >>> payment, = Payment.find([('state', '=', 'draft')])
+    >>> payment.click('approve')
+    >>> payment.state
+    'approved'
+    >>> process_payment = Wizard('account.payment.process', [payment])
+    >>> process_payment.execute('process')
+    >>> payment.reload()
+    >>> succeed = Wizard('account.payment.succeed', [payment])
+    >>> succeed.execute('succeed')
+
+    >>> invoice1.reload()
+    >>> invoice1.amount_to_pay
+    Decimal('0')
+
+Unreconcile the payment line and check the amount to pay::
+
+    >>> other_line, = [l for l in paid_line.reconciliation.lines
+    ...     if l != paid_line]
+    >>> unreconcile = Wizard('account.move.unreconcile_lines', [paid_line])
+    >>> invoice1.reload()
+    >>> invoice1.amount_to_pay
+    Decimal('0.00')
+
+Create a second invoice and reconcile its line to pay with the payment::
+
+    >>> invoice2 = Invoice()
+    >>> invoice2.party = customer
+    >>> line = invoice2.lines.new()
+    >>> line.account = revenue
+    >>> line.quantity = 1
+    >>> line.unit_price = Decimal('100')
+    >>> invoice2.save()
+    >>> invoice2.click('post')
+
+    >>> inv2_line, = [l for l in invoice2.move.lines if l.account == receivable]
+    >>> reconcile = Wizard(
+    ...     'account.move.reconcile_lines', [inv2_line, other_line])
+
+    >>> invoice1.reload()
+    >>> invoice1.amount_to_pay
+    Decimal('100.00')
+    >>> invoice2.reload()
+    >>> invoice2.amount_to_pay
+    Decimal('0')
diff --git a/tests/test_account_payment_clearing.py b/tests/test_account_payment_clearing.py
index f972878470..45a909f93e 100644
--- a/tests/test_account_payment_clearing.py
+++ b/tests/test_account_payment_clearing.py
@@ -28,4 +28,9 @@ def suite():
             tearDown=doctest_teardown, encoding='utf-8',
             checker=doctest_checker,
             optionflags=doctest.REPORT_ONLY_FIRST_FAILURE))
+    suite.addTests(doctest.DocFileSuite(
+            'scenario_invoice_amount_to_pay.rst',
+            tearDown=doctest_teardown, encoding='utf-8',
+            checker=doctest_checker,
+            optionflags=doctest.REPORT_ONLY_FIRST_FAILURE))
     return suite