[IMP] account: add 'partial' and 'reversed' payment states to invoices

- 'partial' payment state corresponds to invoices whose payable/receivable move line has been partially reconciled with some other line.

- 'reversed' payment state corresponds to entries that have been cancelled by the creation of a single reverse entry (using the dedicated button on the form view). This state can be set on invoice as well as on regular entries.

=> To stay consistent with the naming conventions, this commit also renames invoice_payment_state field to payment_state, since it's no longer only applicable on invoices.

closes odoo/odoo#41723

Related: odoo/enterprise#7202
Signed-off-by: Quentin De Paoli (qdp) <qdp@openerp.com>

27 files changed, 160 insertions, 127 deletions

diff --git a/addons/account/data/mail_template_data.xml b/addons/account/data/mail_template_data.xml
index 2d30ca90879..c3fcb7f9d7d 100644
--- a/addons/account/data/mail_template_data.xml
+++ b/addons/account/data/mail_template_data.xml
@@ -32,7 +32,7 @@
         % endif
         amounting in <strong>${format_amount(object.amount_total, object.currency_id)}</strong>
         from ${object.company_id.name}.
-        % if object.invoice_payment_state == 'paid':
+        % if object.payment_state == 'paid':
             This invoice is already paid.
         % else:
             Please remit payment at your earliest convenience.
diff --git a/addons/account/models/account_journal_dashboard.py b/addons/account/models/account_journal_dashboard.py
index 5bc4eff5e4a..449e6f36b58 100644
--- a/addons/account/models/account_journal_dashboard.py
+++ b/addons/account/models/account_journal_dashboard.py
@@ -208,7 +208,7 @@ class account_journal(models.Model):
             FROM account_move move
             WHERE move.journal_id = %(journal_id)s
             AND move.state = 'posted'
-            AND move.invoice_payment_state = 'not_paid'
+            AND move.payment_state in ('not_paid', 'partial')
             AND move.type IN %(invoice_types)s
         ''', {
             'invoice_types': tuple(self.env['account.move'].get_invoice_types(True)),
@@ -251,7 +251,7 @@ class account_journal(models.Model):
         #TODO need to check if all invoices are in the same currency than the journal!!!!
         elif self.type in ['sale', 'purchase']:
             title = _('Bills to pay') if self.type == 'purchase' else _('Invoices owed to you')
-            self.env['account.move'].flush(['amount_residual', 'currency_id', 'type', 'invoice_date', 'company_id', 'journal_id', 'date', 'state', 'invoice_payment_state'])
+            self.env['account.move'].flush(['amount_residual', 'currency_id', 'type', 'invoice_date', 'company_id', 'journal_id', 'date', 'state', 'payment_state'])
 
             (query, query_args) = self._get_open_bills_to_pay_query()
             self.env.cr.execute(query, query_args)
@@ -273,7 +273,7 @@ class account_journal(models.Model):
                 WHERE journal_id = %s
                 AND date <= %s
                 AND state = 'posted'
-                AND invoice_payment_state = 'not_paid'
+                AND payment_state in ('not_paid', 'partial')
                 AND type IN ('out_invoice', 'out_refund', 'in_invoice', 'in_refund', 'out_receipt', 'in_receipt');
             '''
             self.env.cr.execute(query, (self.id, today))
@@ -331,7 +331,7 @@ class account_journal(models.Model):
             FROM account_move move
             WHERE move.journal_id = %(journal_id)s
             AND move.state = 'posted'
-            AND move.invoice_payment_state = 'not_paid'
+            AND move.payment_state in ('not_paid', 'partial')
             AND move.type IN ('out_invoice', 'out_refund', 'in_invoice', 'in_refund', 'out_receipt', 'in_receipt');
         ''', {'journal_id': self.id})
 
@@ -351,7 +351,7 @@ class account_journal(models.Model):
             FROM account_move move
             WHERE move.journal_id = %(journal_id)s
             AND move.state = 'draft'
-            AND move.invoice_payment_state = 'not_paid'
+            AND move.payment_state in ('not_paid', 'partial')
             AND move.type IN ('out_invoice', 'out_refund', 'in_invoice', 'in_refund', 'out_receipt', 'in_receipt');
         ''', {'journal_id': self.id})
 
diff --git a/addons/account/models/account_move.py b/addons/account/models/account_move.py
index ddf79aac7e2..bccb3c04242 100644
--- a/addons/account/models/account_move.py
+++ b/addons/account/models/account_move.py
@@ -156,6 +156,14 @@ class AccountMove(models.Model):
     amount_by_group = fields.Binary(string="Tax amount by group",
         compute='_compute_invoice_taxes_by_group',
         help='Edit Tax amounts if you encounter rouding issues.')
+    payment_state = fields.Selection(selection=[
+        ('not_paid', 'Not Paid'),
+        ('in_payment', 'In Payment'),
+        ('paid', 'Paid'),
+        ('partial', 'Partially Paid'),
+        ('reversed', 'Reversed'),],
+        string='Payment', store=True, readonly=True, copy=False, tracking=True,
+        compute='_compute_amount')
 
     # ==== Cash basis feature fields ====
     tax_cash_basis_rec_id = fields.Many2one(
@@ -186,12 +194,6 @@ class AccountMove(models.Model):
         default=lambda self: self.env.user)
     user_id = fields.Many2one(string='User', related='invoice_user_id',
         help='Technical field used to fit the generic behavior in mail templates.')
-    invoice_payment_state = fields.Selection(selection=[
-        ('not_paid', 'Not Paid'),
-        ('in_payment', 'In Payment'),
-        ('paid', 'Paid')],
-        string='Payment', store=True, readonly=True, copy=False, tracking=True,
-        compute='_compute_amount')
     invoice_date = fields.Date(string='Invoice/Bill Date', readonly=True, index=True, copy=False,
         states={'draft': [('readonly', False)]},
         default=_get_default_invoice_date)
@@ -945,7 +947,8 @@ class AccountMove(models.Model):
         'line_ids.amount_currency',
         'line_ids.amount_residual',
         'line_ids.amount_residual_currency',
-        'line_ids.payment_id.state')
+        'line_ids.payment_id.state',
+        'line_ids.full_reconcile_id')
     def _compute_amount(self):
         invoice_ids = [move.id for move in self if move.id and move.is_invoice(include_receipts=True)]
         self.env['account.payment'].flush(['state'])
@@ -976,6 +979,7 @@ class AccountMove(models.Model):
             total_untaxed_currency = 0.0
             total_tax = 0.0
             total_tax_currency = 0.0
+            total_to_pay = 0.0
             total_residual = 0.0
             total_residual_currency = 0.0
             total = 0.0
@@ -1003,6 +1007,7 @@ class AccountMove(models.Model):
                         total_currency += line.amount_currency
                     elif line.account_id.user_type_id.type in ('receivable', 'payable'):
                         # Residual amount.
+                        total_to_pay += line.balance
                         total_residual += line.amount_residual
                         total_residual_currency += line.amount_residual_currency
                 else:
@@ -1025,18 +1030,30 @@ class AccountMove(models.Model):
             move.amount_residual_signed = total_residual
 
             currency = len(currencies) == 1 and currencies.pop() or move.company_id.currency_id
-            is_paid = currency and currency.is_zero(move.amount_residual) or not move.amount_residual
-
-            # Compute 'invoice_payment_state'.
-            if move.type == 'entry':
-                move.invoice_payment_state = False
-            elif move.state == 'posted' and is_paid:
-                if move.id in in_payment_set:
-                    move.invoice_payment_state = 'in_payment'
-                else:
-                    move.invoice_payment_state = 'paid'
-            else:
-                move.invoice_payment_state = 'not_paid'
+
+            # Compute 'payment_state'.
+            new_pmt_state = 'not_paid' if move.type != 'entry' else False
+
+            if move.is_invoice(include_receipts=True) and move.state == 'posted':
+
+                if currency.is_zero(move.amount_residual):
+                    if move.id in in_payment_set:
+                        new_pmt_state = 'in_payment'
+                    else:
+                        new_pmt_state = 'paid'
+                elif currency.compare_amounts(total_to_pay, total_residual) != 0:
+                    new_pmt_state = 'partial'
+
+            if new_pmt_state == 'paid' and move.type in ('in_invoice', 'out_invoice', 'entry'):
+                reverse_type = move.type == 'in_invoice' and 'in_refund' or move.type == 'out_invoice' and 'out_refund' or 'entry'
+                reverse_moves = self.env['account.move'].search([('reversed_entry_id', '=', move.id), ('state', '=', 'posted'), ('type', '=', reverse_type)])
+
+                # We only set 'reversed' state in cas of 1 to 1 full reconciliation with a reverse entry; otherwise, we use the regular 'paid' state
+                reverse_moves_full_recs = reverse_moves.mapped('line_ids.full_reconcile_id')
+                if reverse_moves_full_recs.mapped('reconciled_line_ids.move_id').filtered(lambda x: x not in (reverse_moves + reverse_moves_full_recs.mapped('exchange_move_id'))) == move:
+                    new_pmt_state = 'reversed'
+
+            move.payment_state = new_pmt_state
 
     def _inverse_amount_total(self):
         for move in self:
@@ -1075,12 +1092,12 @@ class AccountMove(models.Model):
     def _compute_has_matching_suspense_amount(self):
         for r in self:
             res = False
-            if r.state == 'posted' and r.is_invoice() and r.invoice_payment_state == 'not_paid':
+            if r.state == 'posted' and r.is_invoice() and r.payment_state == 'not_paid':
                 domain = r._get_domain_matching_suspense_moves()
                 #there are more than one but less than 5 suspense moves matching the residual amount
                 if (0 < self.env['account.move.line'].search_count(domain) < 5):
                     domain2 = [
-                        ('invoice_payment_state', '=', 'not_paid'),
+                        ('payment_state', '=', 'not_paid'),
                         ('state', '=', 'posted'),
                         ('amount_residual', '=', r.amount_residual),
                         ('type', '=', r.type)]
@@ -1168,7 +1185,7 @@ class AccountMove(models.Model):
             move.invoice_outstanding_credits_debits_widget = json.dumps(False)
             move.invoice_has_outstanding = False
 
-            if move.state != 'posted' or move.invoice_payment_state != 'not_paid' or not move.is_invoice(include_receipts=True):
+            if move.state != 'posted' or move.payment_state != 'not_paid' or not move.is_invoice(include_receipts=True):
                 continue
             pay_term_line_ids = move.line_ids.filtered(lambda line: line.account_id.user_type_id.type in ('receivable', 'payable'))
 
@@ -1557,12 +1574,12 @@ class AccountMove(models.Model):
         moves = super(AccountMove, self).create(vals_list)
 
         # Trigger 'action_invoice_paid' when the invoice is directly paid at its creation.
-        moves.filtered(lambda move: move.is_invoice(include_receipts=True) and move.invoice_payment_state in ('paid', 'in_payment')).action_invoice_paid()
+        moves.filtered(lambda move: move.is_invoice(include_receipts=True) and move.payment_state in ('paid', 'in_payment')).action_invoice_paid()
 
         return moves
 
     def write(self, vals):
-        not_paid_invoices = self.filtered(lambda move: move.is_invoice(include_receipts=True) and move.invoice_payment_state not in ('paid', 'in_payment'))
+        not_paid_invoices = self.filtered(lambda move: move.is_invoice(include_receipts=True) and move.payment_state not in ('paid', 'in_payment'))
 
         for move in self:
             if (move.restrict_mode_hash_table and move.state == "posted" and set(vals).intersection(INTEGRITY_HASH_MOVE_FIELDS)):
@@ -1606,7 +1623,7 @@ class AccountMove(models.Model):
             self._check_balanced()
 
         # Trigger 'action_invoice_paid' when the invoice becomes paid after a write.
-        not_paid_invoices.filtered(lambda move: move.invoice_payment_state in ('paid', 'in_payment')).action_invoice_paid()
+        not_paid_invoices.filtered(lambda move: move.payment_state in ('paid', 'in_payment')).action_invoice_paid()
 
         return res
 
@@ -1646,7 +1663,7 @@ class AccountMove(models.Model):
         if not self.is_invoice(include_receipts=True):
             return super(AccountMove, self)._track_subtype(init_values)
 
-        if 'invoice_payment_state' in init_values and self.invoice_payment_state == 'paid':
+        if 'payment_state' in init_values and self.payment_state == 'paid':
             return self.env.ref('account.mt_invoice_paid')
         elif 'state' in init_values and self.state == 'posted' and self.is_sale_document(include_receipts=True):
             return self.env.ref('account.mt_invoice_validated')
diff --git a/addons/account/models/account_payment.py b/addons/account/models/account_payment.py
index 3f267845633..53e6ce51c71 100644
--- a/addons/account/models/account_payment.py
+++ b/addons/account/models/account_payment.py
@@ -735,7 +735,7 @@ class payment_register(models.TransientModel):
         invoices = self.env['account.move'].browse(active_ids)
 
         # Check all invoices are open
-        if any(invoice.state != 'posted' or invoice.invoice_payment_state != 'not_paid' or not invoice.is_invoice() for invoice in invoices):
+        if any(invoice.state != 'posted' or invoice.payment_state not in ('not_paid', 'partial') or not invoice.is_invoice() for invoice in invoices):
             raise UserError(_("You can only register payments for open invoices"))
         # Check all invoices are inbound or all invoices are outbound
         outbound_list = [invoice.is_outbound() for invoice in invoices]
diff --git a/addons/account/report/account_invoice_report.py b/addons/account/report/account_invoice_report.py
index 1a4f443b91f..e9e960872fd 100644
--- a/addons/account/report/account_invoice_report.py
+++ b/addons/account/report/account_invoice_report.py
@@ -32,7 +32,7 @@ class AccountInvoiceReport(models.Model):
         ('posted', 'Open'),
         ('cancel', 'Cancelled')
         ], string='Invoice Status', readonly=True)
-    invoice_payment_state = fields.Selection(selection=[
+    payment_state = fields.Selection(selection=[
         ('not_paid', 'Not Paid'),
         ('in_payment', 'In Payment'),
         ('paid', 'paid')
@@ -92,7 +92,7 @@ class AccountInvoiceReport(models.Model):
                 move.partner_id,
                 move.invoice_user_id,
                 move.fiscal_position_id,
-                move.invoice_payment_state,
+                move.payment_state,
                 move.invoice_date,
                 move.invoice_date_due,
                 move.invoice_payment_term_id,
@@ -154,7 +154,7 @@ class AccountInvoiceReport(models.Model):
                 move.partner_id,
                 move.invoice_user_id,
                 move.fiscal_position_id,
-                move.invoice_payment_state,
+                move.payment_state,
                 move.invoice_date,
                 move.invoice_date_due,
                 move.invoice_payment_term_id,
diff --git a/addons/account/tests/test_account_move_in_invoice.py b/addons/account/tests/test_account_move_in_invoice.py
index a92109b40aa..2a4539ffc0a 100644
--- a/addons/account/tests/test_account_move_in_invoice.py
+++ b/addons/account/tests/test_account_move_in_invoice.py
@@ -1147,6 +1147,7 @@ class TestAccountMoveInInvoiceOnchanges(AccountTestInvoicingCommon):
         reversal = move_reversal.reverse_moves()
         reverse_move = self.env['account.move'].browse(reversal['res_id'])
 
+        self.assertEqual(self.invoice.payment_state, 'not_paid', "Refunding with a draft credit note should keep the invoice 'not_paid'.")
         self.assertInvoiceValues(reverse_move, [
             {
                 **self.product_line_vals_1,
@@ -1181,7 +1182,7 @@ class TestAccountMoveInInvoiceOnchanges(AccountTestInvoicingCommon):
             'date': move_reversal.date,
             'state': 'draft',
             'ref': 'Reversal of: %s, %s' % (self.invoice.name, move_reversal.reason),
-            'invoice_payment_state': 'not_paid',
+            'payment_state': 'not_paid',
         })
 
         move_reversal = self.env['account.move.reversal'].with_context(active_model="account.move", active_ids=self.invoice.ids).create({
@@ -1192,6 +1193,7 @@ class TestAccountMoveInInvoiceOnchanges(AccountTestInvoicingCommon):
         reversal = move_reversal.reverse_moves()
         reverse_move = self.env['account.move'].browse(reversal['res_id'])
 
+        self.assertEqual(self.invoice.payment_state, 'reversed', "After cancelling it with a reverse invoice, an invoice should be in 'reversed' state.")
         self.assertInvoiceValues(reverse_move, [
             {
                 **self.product_line_vals_1,
@@ -1226,7 +1228,7 @@ class TestAccountMoveInInvoiceOnchanges(AccountTestInvoicingCommon):
             'date': move_reversal.date,
             'state': 'posted',
             'ref': 'Reversal of: %s, %s' % (self.invoice.name, move_reversal.reason),
-            'invoice_payment_state': 'paid',
+            'payment_state': 'paid',
         })
 
     def test_in_invoice_create_refund_multi_currency(self):
@@ -1249,6 +1251,7 @@ class TestAccountMoveInInvoiceOnchanges(AccountTestInvoicingCommon):
         reversal = move_reversal.reverse_moves()
         reverse_move = self.env['account.move'].browse(reversal['res_id'])
 
+        self.assertEqual(self.invoice.payment_state, 'not_paid', "Refunding with a draft credit note should keep the invoice 'not_paid'.")
         self.assertInvoiceValues(reverse_move, [
             {
                 **self.product_line_vals_1,
@@ -1294,7 +1297,7 @@ class TestAccountMoveInInvoiceOnchanges(AccountTestInvoicingCommon):
             'date': move_reversal.date,
             'state': 'draft',
             'ref': 'Reversal of: %s, %s' % (self.invoice.name, move_reversal.reason),
-            'invoice_payment_state': 'not_paid',
+            'payment_state': 'not_paid',
         })
 
         move_reversal = self.env['account.move.reversal'].with_context(active_model="account.move", active_ids=self.invoice.ids).create({
@@ -1305,6 +1308,7 @@ class TestAccountMoveInInvoiceOnchanges(AccountTestInvoicingCommon):
         reversal = move_reversal.reverse_moves()
         reverse_move = self.env['account.move'].browse(reversal['res_id'])
 
+        self.assertEqual(self.invoice.payment_state, 'reversed', "After cancelling it with a reverse invoice, an invoice should be in 'reversed' state.")
         self.assertInvoiceValues(reverse_move, [
             {
                 **self.product_line_vals_1,
@@ -1350,7 +1354,7 @@ class TestAccountMoveInInvoiceOnchanges(AccountTestInvoicingCommon):
             'date': move_reversal.date,
             'state': 'posted',
             'ref': 'Reversal of: %s, %s' % (self.invoice.name, move_reversal.reason),
-            'invoice_payment_state': 'paid',
+            'payment_state': 'paid',
         })
 
     def test_in_invoice_create_1(self):
diff --git a/addons/account/tests/test_account_move_out_invoice.py b/addons/account/tests/test_account_move_out_invoice.py
index b047a3a2fd3..bd3a717185e 100644
--- a/addons/account/tests/test_account_move_out_invoice.py
+++ b/addons/account/tests/test_account_move_out_invoice.py
@@ -1274,6 +1274,7 @@ class TestAccountMoveOutInvoiceOnchanges(AccountTestInvoicingCommon):
         reversal = move_reversal.reverse_moves()
         reverse_move = self.env['account.move'].browse(reversal['res_id'])
 
+        self.assertEqual(self.invoice.payment_state, 'not_paid', "Refunding with a draft credit note should keep the invoice 'not_paid'.")
         self.assertInvoiceValues(reverse_move, [
             {
                 **self.product_line_vals_1,
@@ -1309,7 +1310,7 @@ class TestAccountMoveOutInvoiceOnchanges(AccountTestInvoicingCommon):
             'date': move_reversal.date,
             'state': 'draft',
             'ref': 'Reversal of: %s, %s' % (self.invoice.name, move_reversal.reason),
-            'invoice_payment_state': 'not_paid',
+            'payment_state': 'not_paid',
         })
 
         move_reversal = self.env['account.move.reversal'].with_context(active_model="account.move", active_ids=self.invoice.ids).create({
@@ -1320,6 +1321,7 @@ class TestAccountMoveOutInvoiceOnchanges(AccountTestInvoicingCommon):
         reversal = move_reversal.reverse_moves()
         reverse_move = self.env['account.move'].browse(reversal['res_id'])
 
+        self.assertEqual(self.invoice.payment_state, 'reversed', "After cancelling it with a reverse invoice, an invoice should be in 'reversed' state.")
         self.assertInvoiceValues(reverse_move, [
             {
                 **self.product_line_vals_1,
@@ -1354,7 +1356,7 @@ class TestAccountMoveOutInvoiceOnchanges(AccountTestInvoicingCommon):
             'date': move_reversal.date,
             'state': 'posted',
             'ref': 'Reversal of: %s, %s' % (self.invoice.name, move_reversal.reason),
-            'invoice_payment_state': 'paid',
+            'payment_state': 'paid',
         })
 
     def test_out_invoice_create_refund_multi_currency(self):
@@ -1377,6 +1379,7 @@ class TestAccountMoveOutInvoiceOnchanges(AccountTestInvoicingCommon):
         reversal = move_reversal.reverse_moves()
         reverse_move = self.env['account.move'].browse(reversal['res_id'])
 
+        self.assertEqual(self.invoice.payment_state, 'not_paid', "Refunding with a draft credit note should keep the invoice 'not_paid'.")
         self.assertInvoiceValues(reverse_move, [
             {
                 **self.product_line_vals_1,
@@ -1422,7 +1425,7 @@ class TestAccountMoveOutInvoiceOnchanges(AccountTestInvoicingCommon):
             'date': move_reversal.date,
             'state': 'draft',
             'ref': 'Reversal of: %s, %s' % (self.invoice.name, move_reversal.reason),
-            'invoice_payment_state': 'not_paid',
+            'payment_state': 'not_paid',
         })
 
         move_reversal = self.env['account.move.reversal'].with_context(active_model="account.move", active_ids=self.invoice.ids).create({
@@ -1433,6 +1436,7 @@ class TestAccountMoveOutInvoiceOnchanges(AccountTestInvoicingCommon):
         reversal = move_reversal.reverse_moves()
         reverse_move = self.env['account.move'].browse(reversal['res_id'])
 
+        self.assertEqual(self.invoice.payment_state, 'reversed', "After cancelling it with a reverse invoice, an invoice should be in 'reversed' state.")
         self.assertInvoiceValues(reverse_move, [
             {
                 **self.product_line_vals_1,
@@ -1478,7 +1482,7 @@ class TestAccountMoveOutInvoiceOnchanges(AccountTestInvoicingCommon):
             'date': move_reversal.date,
             'state': 'posted',
             'ref': 'Reversal of: %s, %s' % (self.invoice.name, move_reversal.reason),
-            'invoice_payment_state': 'paid',
+            'payment_state': 'paid',
         })
 
     def test_out_invoice_create_1(self):
diff --git a/addons/account/tests/test_bank_statement_reconciliation.py b/addons/account/tests/test_bank_statement_reconciliation.py
index 37590f44646..a6782594c07 100644
--- a/addons/account/tests/test_bank_statement_reconciliation.py
+++ b/addons/account/tests/test_bank_statement_reconciliation.py
@@ -49,7 +49,7 @@ class TestBankStatementReconciliation(AccountTestCommon):
         self.assertTrue(rcv_mv_line.reconciled)
         self.assertTrue(counterpart_mv_line.reconciled)
         self.assertEqual(counterpart_mv_line.matched_credit_ids, rcv_mv_line.matched_debit_ids)
-        self.assertEqual(rcv_mv_line.move_id.invoice_payment_state, 'paid', "The related invoice's state should now be 'paid'")
+        self.assertEqual(rcv_mv_line.move_id.payment_state, 'paid', "The related invoice's state should now be 'paid'")
 
     def test_reconcile_with_write_off(self):
         pass
diff --git a/addons/account/tests/test_payment.py b/addons/account/tests/test_payment.py
index bfc85405b83..1c9da598ffd 100644
--- a/addons/account/tests/test_payment.py
+++ b/addons/account/tests/test_payment.py
@@ -122,7 +122,7 @@ class TestPayment(AccountTestCommon):
         self.assertAlmostEqual(payment.amount, 300)
         self.assertEqual(payment.state, 'posted')
         self.assertEqual(payment.state, 'posted')
-        self.assertEqual(inv_1.invoice_payment_state, 'paid')
+        self.assertEqual(inv_1.payment_state, 'paid')
 
         rec_line = payment.move_line_ids.filtered(lambda line: line.account_id.user_type_id.type in ('receivable', 'payable'))
         self.assertRecordValues(payment.move_line_ids.sorted('credit'), [
@@ -249,7 +249,7 @@ class TestPayment(AccountTestCommon):
             {'account_id': self.account_payable.id, 'debit': 8.65, 'credit': 0.0, 'amount_currency': 13.22, 'currency_id': self.currency_usd_id},
         ])
         self.assertTrue(receivable_line.full_reconcile_id)
-        self.assertEqual(invoice.invoice_payment_state, 'paid')
+        self.assertEqual(invoice.payment_state, 'paid')
 
         # Use case:
         # Company is in EUR, create a vendor bill for 25 EUR and register payment of 25 USD.
@@ -277,7 +277,7 @@ class TestPayment(AccountTestCommon):
             {'account_id': self.account_receivable.id, 'debit': 0.0, 'credit': 8.65, 'amount_currency': -13.22, 'currency_id': self.currency_usd_id},
         ])
         self.assertTrue(payable_line.full_reconcile_id)
-        self.assertEqual(invoice.invoice_payment_state, 'paid')
+        self.assertEqual(invoice.payment_state, 'paid')
 
     def test_payment_and_writeoff_out_refund(self):
         # Use case:
@@ -304,7 +304,7 @@ class TestPayment(AccountTestCommon):
             {'account_id': self.account_eur.id, 'debit': 0.0, 'credit': 90.0, 'amount_currency': 0.0, 'currency_id': False},
             {'account_id': self.account_payable.id, 'debit': 0.0, 'credit': 10.0, 'amount_currency': 0.0, 'currency_id': False},
         ])
-        self.assertEqual(invoice.invoice_payment_state, 'paid')
+        self.assertEqual(invoice.payment_state, 'paid')
 
     def test_payment_and_writeoff_in_other_currency_2(self):
         # Use case:
@@ -351,7 +351,7 @@ class TestPayment(AccountTestCommon):
         ])
 
         #check the invoice status
-        self.assertEqual(invoice.invoice_payment_state, 'paid')
+        self.assertEqual(invoice.payment_state, 'paid')
 
     def test_payment_and_writeoff_in_other_currency_3(self):
         # Use case related in revision 20935462a0cabeb45480ce70114ff2f4e91eaf79
@@ -397,7 +397,7 @@ class TestPayment(AccountTestCommon):
 
         # Check the invoice status and the full reconciliation: the difference on the receivable account
         # should have been completed by an exchange rate difference entry
-        self.assertEqual(invoice.invoice_payment_state, 'paid')
+        self.assertEqual(invoice.payment_state, 'paid')
         self.assertTrue(receivable_line.full_reconcile_id)
 
     def test_post_at_bank_reconciliation_payment(self):
@@ -441,7 +441,7 @@ class TestPayment(AccountTestCommon):
         invoice = self.create_invoice(amount=53, partner=self.partner_agrolait.id)
         (payment_one.move_line_ids + payment_two.move_line_ids + invoice.line_ids).filtered(lambda x: x.account_id.user_type_id.type == 'receivable').reconcile()
 
-        self.assertEqual(invoice.invoice_payment_state, 'in_payment', "Invoice should be in 'in payment' state")
+        self.assertEqual(invoice.payment_state, 'in_payment', "Invoice should be in 'in payment' state")
 
         # Match the first payment with a bank statement line
         bank_statement_one = self.reconcile(payment_one.move_line_ids.filtered(lambda x: x.account_id.user_type_id.type == 'liquidity'), 42)
@@ -450,7 +450,7 @@ class TestPayment(AccountTestCommon):
         self.assertEqual(payment_one.mapped('move_line_ids.move_id.state'), ['posted'], "After bank reconciliation, payment one's account.move should be posted.")
         self.assertEqual(payment_one.mapped('move_line_ids.move_id.date'), stmt_line_date_one, "After bank reconciliation, payment one's account.move should share the same date as the bank statement.")
         self.assertEqual([payment_one.payment_date], stmt_line_date_one, "After bank reconciliation, payment one should share the same date as the bank statement.")
-        self.assertEqual(invoice.invoice_payment_state, 'in_payment', "The invoice should still be 'in payment', not all its payments are reconciled with a statement")
+        self.assertEqual(invoice.payment_state, 'in_payment', "The invoice should still be 'in payment', not all its payments are reconciled with a statement")
 
         # Match the second payment with a bank statement line
         bank_statement_two = self.reconcile(payment_two.move_line_ids.filtered(lambda x: x.account_id.user_type_id.type == 'liquidity'), 42)
@@ -461,7 +461,7 @@ class TestPayment(AccountTestCommon):
         self.assertEqual([payment_two.payment_date], stmt_line_date_two, "After bank reconciliation, payment two should share the same date as the bank statement.")
 
         # The invoice should now be paid
-        self.assertEqual(invoice.invoice_payment_state, 'paid', "Invoice should be in 'paid' state after having reconciled the two payments with a bank statement")
+        self.assertEqual(invoice.payment_state, 'paid', "Invoice should be in 'paid' state after having reconciled the two payments with a bank statement")
 
     def test_payment_draft_keep_name(self):
         payment = self.payment_model.create({
diff --git a/addons/account/tests/test_reconciliation.py b/addons/account/tests/test_reconciliation.py
index e0959e39d97..8d5c5500416 100644
--- a/addons/account/tests/test_reconciliation.py
+++ b/addons/account/tests/test_reconciliation.py
@@ -179,7 +179,7 @@ class TestReconciliationExec(TestAccountReconciliationCommon):
         ])
 
         # The invoice should be paid, as the payments totally cover its total
-        self.assertEqual(move.invoice_payment_state, 'paid', 'The invoice should be paid by now')
+        self.assertEqual(move.payment_state, 'paid', 'The invoice should be paid by now')
         self.assertTrue(receivable_line.reconciled, 'The invoice should be totally reconciled')
         self.assertTrue(receivable_line.full_reconcile_id, 'The invoice should have a full reconcile number')
         self.assertEqual(receivable_line.amount_residual, 0, 'The invoice should be totally reconciled')
@@ -772,7 +772,7 @@ class TestReconciliationExec(TestAccountReconciliationCommon):
 
         credit_aml = payment.move_line_ids.filtered('credit')
         inv.js_assign_outstanding_line(credit_aml.id)
-        self.assertTrue(inv.invoice_payment_state == 'paid', 'The invoice should be paid')
+        self.assertTrue(inv.payment_state == 'paid', 'The invoice should be paid')
 
         exchange_reconcile = payment.move_line_ids.mapped('full_reconcile_id')
         exchange_move = exchange_reconcile.exchange_move_id
@@ -853,9 +853,9 @@ class TestReconciliationExec(TestAccountReconciliationCommon):
              'invoice_ids': [(6, 0, invoice_cust_1.ids)],
              })
         payment.post()
-        # We expect at this point that the invoice should still be open,
+        # We expect at this point that the invoice should still be open, in 'partial' state,
         # because they owe us still 50 CC.
-        self.assertEqual(invoice_cust_1.invoice_payment_state, 'not_paid', 'Invoice is in status %s' % invoice_cust_1.state)
+        self.assertEqual(invoice_cust_1.payment_state, 'partial', 'Invoice is in status %s' % invoice_cust_1.state)
 
     def test_multiple_term_reconciliation_opw_1906665(self):
         '''Test that when registering a payment to an invoice with multiple
@@ -1686,7 +1686,7 @@ class TestReconciliationExec(TestAccountReconciliationCommon):
         # Second Payment
         payment1 = self.make_payment(invoice, journal, 0.01)
         self.assertEqual(invoice.amount_residual, 0)
-        self.assertEqual(invoice.invoice_payment_state, 'paid')
+        self.assertEqual(invoice.payment_state, 'paid')
 
         self.assertTrue(tax_waiting_line.reconciled)
         move_caba1 = tax_waiting_line.matched_debit_ids.mapped('debit_move_id').mapped('move_id').filtered(lambda m: m != move_caba0)
@@ -1816,8 +1816,8 @@ class TestReconciliationExec(TestAccountReconciliationCommon):
         self.assertEqual(inv1_receivable.full_reconcile_id, pay_receivable.full_reconcile_id)
         self.assertEqual(inv1_receivable.full_reconcile_id, move_balance_receiv.full_reconcile_id)
 
-        self.assertEqual(inv1.invoice_payment_state, 'paid')
-        self.assertEqual(inv2.invoice_payment_state, 'paid')
+        self.assertEqual(inv1.payment_state, 'paid')
+        self.assertEqual(inv2.payment_state, 'paid')
 
     def test_inv_refund_foreign_payment_writeoff_domestic3(self):
         """
@@ -1888,8 +1888,8 @@ class TestReconciliationExec(TestAccountReconciliationCommon):
         exchange_rcv = inv1_receivable.full_reconcile_id.exchange_move_id.line_ids.filtered(lambda l: l.account_id.internal_type == 'receivable')
         self.assertEqual(exchange_rcv.amount_currency, 0.01)
 
-        self.assertEqual(inv1.invoice_payment_state, 'paid')
-        self.assertEqual(inv2.invoice_payment_state, 'paid')
+        self.assertEqual(inv1.payment_state, 'paid')
+        self.assertEqual(inv2.payment_state, 'paid')
 
     def test_inv_refund_foreign_payment_writeoff_domestic4(self):
         """
@@ -1969,8 +1969,8 @@ class TestReconciliationExec(TestAccountReconciliationCommon):
 
         self.assertFalse(inv1_receivable.full_reconcile_id.exchange_move_id)
 
-        self.assertEqual(inv1.invoice_payment_state, 'paid')
-        self.assertEqual(inv2.invoice_payment_state, 'paid')
+        self.assertEqual(inv1.payment_state, 'paid')
+        self.assertEqual(inv2.payment_state, 'paid')
 
     def test_inv_refund_foreign_payment_writeoff_domestic5(self):
         """
@@ -2037,8 +2037,8 @@ class TestReconciliationExec(TestAccountReconciliationCommon):
 
         self.assertFalse(inv1_receivable.full_reconcile_id.exchange_move_id)
 
-        self.assertEqual(inv1.invoice_payment_state, 'paid')
-        self.assertEqual(inv2.invoice_payment_state, 'paid')
+        self.assertEqual(inv1.payment_state, 'paid')
+        self.assertEqual(inv2.payment_state, 'paid')
 
     def test_inv_refund_foreign_payment_writeoff_domestic6(self):
         """
@@ -2101,8 +2101,8 @@ class TestReconciliationExec(TestAccountReconciliationCommon):
 
         self.assertFalse(inv1_receivable.full_reconcile_id.exchange_move_id)
 
-        self.assertEqual(inv1.invoice_payment_state, 'paid')
-        self.assertEqual(inv2.invoice_payment_state, 'paid')
+        self.assertEqual(inv1.payment_state, 'paid')
+        self.assertEqual(inv2.payment_state, 'paid')
 
     def test_inv_refund_foreign_payment_writeoff_domestic6bis(self):
         """
@@ -2176,8 +2176,8 @@ class TestReconciliationExec(TestAccountReconciliationCommon):
 
         self.assertFalse(inv1_receivable.full_reconcile_id.exchange_move_id)
 
-        self.assertEqual(inv1.invoice_payment_state, 'paid')
-        self.assertEqual(inv2.invoice_payment_state, 'paid')
+        self.assertEqual(inv1.payment_state, 'paid')
+        self.assertEqual(inv2.payment_state, 'paid')
 
     def test_inv_refund_foreign_payment_writeoff_domestic7(self):
         """
@@ -2235,7 +2235,7 @@ class TestReconciliationExec(TestAccountReconciliationCommon):
 
         self.assertFalse(inv1_receivable.full_reconcile_id.exchange_move_id)
 
-        self.assertEqual(inv1.invoice_payment_state, 'paid')
+        self.assertEqual(inv1.payment_state, 'paid')
 
     def test_inv_refund_foreign_payment_writeoff_domestic8(self):
         """
@@ -2298,4 +2298,4 @@ class TestReconciliationExec(TestAccountReconciliationCommon):
 
         self.assertFalse(inv1_receivable.full_reconcile_id.exchange_move_id)
 
-        self.assertEqual(inv1.invoice_payment_state, 'paid')
+        self.assertEqual(inv1.payment_state, 'paid')
diff --git a/addons/account/views/account_move_views.xml b/addons/account/views/account_move_views.xml
index 342b035523d..79f67ea7d8e 100644
--- a/addons/account/views/account_move_views.xml
+++ b/addons/account/views/account_move_views.xml
@@ -399,9 +399,9 @@
                     <field name="invoice_partner_display_name" invisible="context.get('default_type') not in ('out_invoice', 'out_refund','out_receipt')" groups="base.group_user" string="Customer" />
                     <field name="invoice_date" optional="show" invisible="context.get('default_type') not in ('in_invoice', 'in_refund','in_receipt')" string="Bill Date"/>
                     <field name="invoice_date" optional="show" invisible="context.get('default_type') not in ('out_invoice', 'out_refund','out_receipt')" string="Invoice Date"/>
-                    <field name="invoice_origin" optional="show" string="Source Document"/>
+                    <field name="invoice_origin" optional="hide" string="Source Document"/>
                     <field name="invoice_payment_ref" optional="hide" invisible="context.get('default_type') in ('out_invoice', 'out_refund','out_receipt')"/>
-                    <field name="invoice_user_id" optional="show" invisible="context.get('default_type') not in ('out_invoice', 'out_refund','out_receipt')" string="Sales Person"/>
+                    <field name="invoice_user_id" optional="hide" invisible="context.get('default_type') not in ('out_invoice', 'out_refund','out_receipt')" string="Sales Person"/>
                     <field name="company_id" groups="base.group_multi_company" options="{'no_create': True}" optional="show"/>
                     <field name="invoice_date_due" optional="show"/>
                     <field name="amount_untaxed_signed" string="Tax Excluded" sum="Total" optional="show"/>
@@ -410,8 +410,8 @@
                     <field name="amount_residual_signed" string="Amount Due" sum="Amount Due" optional="show"/>
                     <field name="currency_id" invisible="1"/>
                     <field name="company_currency_id" invisible="1"/>
-                    <field name="state" optional="show"/>
-                    <field name="invoice_payment_state" optional="hide"/>
+                    <field name="state" optional="hide"/>
+                    <field name="payment_state"/>
                     <field name="type" invisible="context.get('default_type', True)"/>
                 </tree>
             </field>
@@ -485,7 +485,7 @@
                         <!-- Register Payment (only invoices / receipts) -->
                         <button name="action_invoice_register_payment" id="account_invoice_payment_btn"
                                 type="object" class="oe_highlight"
-                                attrs="{'invisible': ['|', '|', ('state', '!=', 'posted'), ('invoice_payment_state', '!=', 'not_paid'), ('type', 'not in', ('out_invoice', 'out_refund', 'in_invoice', 'in_refund', 'out_receipt', 'in_receipt'))]}"
+                                attrs="{'invisible': ['|', '|', ('state', '!=', 'posted'), ('payment_state', 'not in', ('not_paid', 'partial')), ('type', 'not in', ('out_invoice', 'out_refund', 'in_invoice', 'in_refund', 'out_receipt', 'in_receipt'))]}"
                                 string="Register Payment"
                                 groups="account.group_account_invoice"/>
                         <!-- Preview (only customer invoices) -->
@@ -494,7 +494,7 @@
                         <!-- Reverse -->
                         <button name="%(action_view_account_move_reversal)d" string="Reverse Entry"
                                 type="action" groups="account.group_account_invoice"
-                                attrs="{'invisible': ['|', ('type', '!=', 'entry'), ('state', '!=', 'posted')]}"/>
+                                attrs="{'invisible': ['|', ('type', '!=', 'entry'), '|', ('state', '!=', 'posted'), ('payment_state', '=', 'reversed')]}"/>
                         <button name="action_reverse" string='Add Credit Note'
                                 type='object' groups="account.group_account_invoice"
                                 attrs="{'invisible': ['|', ('type', 'not in', ('out_invoice', 'in_invoice')), ('state', '!=', 'posted')]}"/>
@@ -516,12 +516,12 @@
                     </div>
                     <div groups="account.group_account_invoice"
                          class="alert alert-info" role="alert" style="margin-bottom:0px;"
-                         attrs="{'invisible': ['|', '|', ('type', 'not in', ('out_invoice', 'out_refund')), ('invoice_has_outstanding', '=', False), ('invoice_payment_state', '!=', 'not_paid')]}">
+                         attrs="{'invisible': ['|', '|', ('type', 'not in', ('out_invoice', 'out_refund')), ('invoice_has_outstanding', '=', False), ('payment_state', 'not in', ('not_paid', 'partial'))]}">
                         You have <bold><a class="alert-link" href="#outstanding" role="button">outstanding payments</a></bold> for this customer. You can allocate them to mark this invoice as paid.
                     </div>
                     <div groups="account.group_account_invoice"
                          class="alert alert-info" role="alert" style="margin-bottom:0px;"
-                         attrs="{'invisible': ['|', '|', ('type', 'not in', ('in_invoice', 'in_refund')), ('invoice_has_outstanding', '=', False), ('invoice_payment_state', '!=', 'not_paid')]}">
+                         attrs="{'invisible': ['|', '|', ('type', 'not in', ('in_invoice', 'in_refund')), ('invoice_has_outstanding', '=', False), ('payment_state', 'not in', ('not_paid', 'partial'))]}">
                         You have <bold><a class="alert-link" href="#outstanding" role="button">outstanding debits</a></bold> for this supplier. You can allocate them to mark this bill as paid.
                     </div>
                     <sheet>
@@ -537,14 +537,19 @@
 
                         <!-- Payment status for invoices / receipts -->
                         <widget name="web_ribbon" title="Paid"
-                                attrs="{'invisible': ['|', ('invoice_payment_state', '!=', 'paid'), ('type', 'not in', ('out_invoice', 'out_refund', 'in_invoice', 'in_refund', 'out_receipt', 'in_receipt'))]}"/>
+                                attrs="{'invisible': ['|', ('payment_state', '!=', 'paid'), ('type', 'not in', ('out_invoice', 'out_refund', 'in_invoice', 'in_refund', 'out_receipt', 'in_receipt'))]}"/>
                         <widget name="web_ribbon" title="In Payment"
-                                attrs="{'invisible': ['|', ('invoice_payment_state', '!=', 'in_payment'), ('type', 'not in', ('out_invoice', 'out_refund', 'in_invoice', 'in_refund', 'out_receipt', 'in_receipt'))]}"/>
+                                attrs="{'invisible': ['|', ('payment_state', '!=', 'in_payment'), ('type', 'not in', ('out_invoice', 'out_refund', 'in_invoice', 'in_refund', 'out_receipt', 'in_receipt'))]}"/>
+                        <widget name="web_ribbon" title="Partial"
+                                attrs="{'invisible': ['|', ('payment_state', '!=', 'partial'), ('type', 'not in', ('out_invoice', 'out_refund', 'in_invoice', 'in_refund', 'out_receipt', 'in_receipt'))]}"/>
+                        <widget name="web_ribbon" title="Reversed"
+                                bg_color="bg-danger"
+                                attrs="{'invisible': [('payment_state', '!=', 'reversed')]}"/>
 
                         <!-- Invisible fields -->
                         <field name="id" invisible="1"/>
                         <field name="type" invisible="1"/>
-                        <field name="invoice_payment_state" invisible="1" force_save="1"/>
+                        <field name="payment_state" invisible="1" force_save="1"/>
                         <field name="invoice_filter_type_domain" invisible="1"/>
                         <field name="company_currency_id" invisible="1"/>
                         <field name="commercial_partner_id" invisible="1"/>
@@ -1038,6 +1043,8 @@
                     <filter string="Unposted" name="unposted" domain="[('state', '=', 'draft')]" help="Unposted Journal Entries"/>
                     <filter string="Posted" name="posted" domain="[('state', '=', 'posted')]" help="Posted Journal Entries"/>
                     <separator/>
+                    <filter string="Reversed" name="reversed" domain="[('payment_state', '=', 'reversed')]"/>
+                    <separator/>
                     <filter string="To Check" name="to_check" domain="[('to_check', '=', True)]"/>
                     <separator/>
                     <filter string="Sales" name="sales" domain="[('journal_id.type', '=', 'sale')]" context="{'default_journal_type': 'sale'}"/>
@@ -1077,13 +1084,15 @@
                     <filter domain="[('invoice_user_id', '=', uid)]" name="myinvoices" help="My Invoices"/>
                     <separator/>
                     <filter name="draft" string="Draft" domain="[('state','=','draft')]"/>
-                    <filter name="unpaid" string="Posted" domain="[('state', '=', 'posted'), ('invoice_payment_state', '=', 'not_paid')]"/>
+                    <filter name="unpaid" string="Posted" domain="[('state', '=', 'posted'), ('payment_state', 'in', ('not_paid', 'partial'))]"/>
                     <separator/>
                     <filter string="To Check" name="to_check" domain="[('to_check', '=', True)]"/>
                     <separator/>
-                    <filter name="in_payment" string="In Payment" domain="[('invoice_payment_state', '=', 'in_payment')]"/>
-                    <filter name="paid" string="Paid" domain="[('invoice_payment_state', '=', 'paid')]"/>
-                    <filter name="late" string="Overdue" domain="['&amp;', ('invoice_date_due', '&lt;', time.strftime('%%Y-%%m-%%d')), ('state', '=', 'posted'), ('invoice_payment_state', '=', 'not_paid')]" help="Overdue invoices, maturity date passed"/>
+                    <filter name="in_payment" string="In Payment" domain="[('payment_state', '=', 'in_payment')]"/>
+                    <filter name="partial" string="Partially Paid" domain="[('payment_state', '=', 'partial')]"/>
+                    <filter name="paid" string="Paid" domain="[('payment_state', '=', 'paid')]"/>
+                    <filter name="reversed" string="Reversed" domain="[('payment_state', '=', 'reversed')]"/>
+                    <filter name="late" string="Overdue" domain="['&amp;', ('invoice_date_due', '&lt;', time.strftime('%%Y-%%m-%%d')), ('state', '=', 'posted'), ('payment_state', 'in', ('not_paid', 'partial'))]" help="Overdue invoices, maturity date passed"/>
                     <separator/>
                     <filter name="invoice_date" string="Invoice Date" date="invoice_date"/>
                     <filter name="due_date" string="Due Date" date="invoice_date_due"/>
diff --git a/addons/account_payment/views/account_portal_templates.xml b/addons/account_payment/views/account_portal_templates.xml
index 0300c85645b..e30c5e61394 100644
--- a/addons/account_payment/views/account_portal_templates.xml
+++ b/addons/account_payment/views/account_portal_templates.xml
@@ -7,7 +7,7 @@
             <td class="text-center">
                 <t t-set="tx_ids" t-value="invoice.transaction_ids.filtered(lambda tx: tx.state in ('pending', 'authorized', 'done'))"/>
                 <t t-set="pending_manual_txs" t-value="tx_ids.filtered(lambda tx: tx.state == 'pending' and tx.acquirer_id.provider in ('transfer', 'manual'))"/>
-                <a t-if="invoice.state == 'posted' and invoice.invoice_payment_state == 'not_paid' and invoice.amount_total and invoice.type == 'out_invoice' and (pending_manual_txs or not tx_ids)"
+                <a t-if="invoice.state == 'posted' and invoice.payment_state in ('not_paid', 'partial') and invoice.amount_total and invoice.type == 'out_invoice' and (pending_manual_txs or not tx_ids)"
                     t-att-href="invoice.get_portal_url(anchor='portal_pay')" title="Pay Now" aria-label="Pay now" class="btn btn-sm btn-primary" role="button">
                     <i class="fa fa-arrow-circle-right"/><span class='d-none d-md-inline'> Pay Now</span>
                 </a>
@@ -16,7 +16,7 @@
         <xpath expr="//t[@t-foreach='invoices']/tr/td[hasclass('tx_status')]" position="replace">
             <t t-set="last_tx" t-value="invoice.get_portal_last_transaction()"/>
             <td class="tx_status text-center">
-                <t t-if="invoice.state == 'posted' and invoice.invoice_payment_state == 'not_paid' and (last_tx.state not in ['pending', 'authorized', 'done', 'cancel'] or (last_tx.state == 'pending' and last_tx.acquirer_id.provider in ('transfer', 'manual')))">
+                <t t-if="invoice.state == 'posted' and invoice.payment_state in ('not_paid', 'partial') and (last_tx.state not in ['pending', 'authorized', 'done', 'cancel'] or (last_tx.state == 'pending' and last_tx.acquirer_id.provider in ('transfer', 'manual')))">
                     <span class="badge badge-pill badge-info"><i class="fa fa-fw fa-clock-o"></i><span class="d-none d-md-inline"> Waiting for Payment</span></span>
                 </t>
                 <t t-if="invoice.state == 'posted' and last_tx.state == 'authorized'">
@@ -25,7 +25,7 @@
                 <t t-if="invoice.state == 'posted' and last_tx.state == 'pending' and last_tx.acquirer_id.provider not in ('transfer', 'manual')">
                   <span class="badge badge-pill badge-warning"><span class="d-none d-md-inline"> Pending</span></span>
                 </t>
-                <t t-if="invoice.state == 'posted' and invoice.invoice_payment_state == 'paid' or last_tx.state == 'done'">
+                <t t-if="invoice.state == 'posted' and invoice.payment_state == 'paid' or last_tx.state == 'done'">
                     <span class="badge badge-pill badge-success"><i class="fa fa-fw fa-check"></i><span class="d-none d-md-inline"> Paid</span></span>
                 </t>
                 <t t-if="invoice.state == 'cancel'">
@@ -36,7 +36,7 @@
     </template>
 
     <template id="portal_invoice_payment" name="Invoice Payment">
-        <div class="row" t-if="not tx_ids and invoice.state == 'posted' and invoice.invoice_payment_state == 'not_paid' and invoice.amount_total" id="portal_pay">
+        <div class="row" t-if="not tx_ids and invoice.state == 'posted' and invoice.payment_state in ('not_paid', 'partial') and invoice.amount_total" id="portal_pay">
             <div class="modal fade" id="pay_with" role="dialog">
                 <div class="modal-dialog">
                     <div class="modal-content">
@@ -71,14 +71,14 @@
             <t t-set="tx_ids" t-value="invoice.transaction_ids.filtered(lambda tx: tx.state in ('pending', 'authorized', 'done'))"/>
             <t t-set="pending_manual_txs" t-value="tx_ids.filtered(lambda tx: tx.state == 'pending' and tx.acquirer_id.provider in ('transfer', 'manual'))"/>
             <div>
-                <a href="#" t-if="invoice.state == 'posted' and invoice.invoice_payment_state == 'not_paid' and invoice.amount_total and invoice.type == 'out_invoice' and (pending_manual_txs or not tx_ids)"
+                <a href="#" t-if="invoice.state == 'posted' and invoice.payment_state in ('not_paid', 'partial') and invoice.amount_total and invoice.type == 'out_invoice' and (pending_manual_txs or not tx_ids)"
                     class="btn btn-primary btn-block mb-2" data-toggle="modal" data-target="#pay_with">
                     <i class="fa fa-fw fa-arrow-circle-right"/> Pay Now
                 </a>
-                <div t-if="tx_ids and not pending_manual_txs and invoice.invoice_payment_state != 'paid'" class="alert alert-info py-1 mb-2" >
+                <div t-if="tx_ids and not pending_manual_txs and invoice.payment_state != 'paid'" class="alert alert-info py-1 mb-2" >
                     <i class="fa fa-fw fa-check-circle"/> Pending
                 </div>
-                <div t-if="invoice.invoice_payment_state == 'paid'" class="alert alert-success py-1 mb-2" >
+                <div t-if="invoice.payment_state == 'paid'" class="alert alert-success py-1 mb-2" >
                     <i class="fa fa-fw fa-check-circle"/> Paid
                 </div>
             </div>
@@ -91,7 +91,7 @@
                 </t>
             </div>
             <t t-set="tx_ids" t-value="invoice.transaction_ids.filtered(lambda tx: tx.state in ('authorized', 'done'))"/>
-            <div t-if="not tx_ids and invoice.state == 'posted' and invoice.invoice_payment_state == 'not_paid' and invoice.amount_total" id="portal_pay">
+            <div t-if="not tx_ids and invoice.state == 'posted' and invoice.payment_state in ('not_paid', 'partial') and invoice.amount_total" id="portal_pay">
                 <div t-if="pms or acquirers" id="payment_method">
                     <t t-call="account_payment.portal_invoice_payment"/>
                 </div>
@@ -136,7 +136,7 @@
                     <b>Communication: </b><span t-esc='invoice.ref'/>
                 </div>
             </t>
-            <t t-if="success == 'pay_invoice' and invoice.invoice_payment_state == 'paid'">
+            <t t-if="success == 'pay_invoice' and invoice.payment_state == 'paid'">
                 Done, your online payment has been successfully processed. Thank you for your order.
             </t>
         </xpath>
diff --git a/addons/l10n_be_invoice_bba/data/mail_template_data.xml b/addons/l10n_be_invoice_bba/data/mail_template_data.xml
index 66aa134c8e4..1599a31d186 100644
--- a/addons/l10n_be_invoice_bba/data/mail_template_data.xml
+++ b/addons/l10n_be_invoice_bba/data/mail_template_data.xml
@@ -10,7 +10,7 @@
             (${object.partner_id.parent_id.name})
         % endif
         <br /><br />
-        Here is, in attachment, your 
+        Here is, in attachment, your
         % if object.name:
             invoice <strong>${object.name}</strong>
         % else:
@@ -21,7 +21,7 @@
         % endif
         amounting in <strong>${format_amount(object.amount_total, object.currency_id)}</strong>
         from ${object.company_id.name}.
-        % if object.invoice_payment_state=='paid':
+        % if object.payment_state=='paid':
             This invoice is already paid.
         % else:
             Please remit payment at your earliest convenience.
diff --git a/addons/l10n_ch/views/account_invoice_view.xml b/addons/l10n_ch/views/account_invoice_view.xml
index d86c8e8bece..115a546fd98 100644
--- a/addons/l10n_ch/views/account_invoice_view.xml
+++ b/addons/l10n_ch/views/account_invoice_view.xml
@@ -20,7 +20,7 @@
                             ('type', 'not in', ('out_invoice', 'out_refund')),
                             ('l10n_ch_isr_sent', '=', True),
                             ('state', '!=', 'posted'),
-                            ('invoice_payment_state', '!=', 'not_paid'),
+                            ('payment_state', 'not in', ('not_paid', 'partial')),
                             ('l10n_ch_currency_name', 'not in', ['EUR', 'CHF'])]}"
                         class="oe_highlight"
                         groups="base.group_user"
@@ -36,7 +36,7 @@
                             ('type', 'not in', ('out_invoice', 'out_refund')),
                             ('l10n_ch_isr_sent', '=', False),
                             ('state', '!=', 'posted'),
-                            ('invoice_payment_state', '!=', 'not_paid'),
+                            ('payment_state', 'not in', ('not_paid', 'partial')),
                             ('l10n_ch_currency_name', 'not in', ['EUR', 'CHF'])]}"
                         groups="base.group_user"
                         />
diff --git a/addons/l10n_cl/views/account_move_view.xml b/addons/l10n_cl/views/account_move_view.xml
index 685d8cbde60..6266b080f17 100644
--- a/addons/l10n_cl/views/account_move_view.xml
+++ b/addons/l10n_cl/views/account_move_view.xml
@@ -38,7 +38,7 @@
                 <field name="currency_id" invisible="1"/>
                 <field name="company_currency_id" invisible="1"/>
                 <field name="state" optional="show"/>
-                <field name="invoice_payment_state" optional="hide"/>
+                <field name="payment_state" optional="hide"/>
                 <field name="type" invisible="context.get('default_type', True)"/>
             </tree>
         </field>
diff --git a/addons/membership/models/membership.py b/addons/membership/models/membership.py
index fede4462625..bdfa9a201a4 100644
--- a/addons/membership/models/membership.py
+++ b/addons/membership/models/membership.py
@@ -44,7 +44,7 @@ class MembershipLine(models.Model):
 
     @api.depends('account_invoice_id.state',
                  'account_invoice_id.amount_residual',
-                 'account_invoice_id.invoice_payment_state')
+                 'account_invoice_id.payment_state')
     def _compute_state(self):
         """Compute the state lines """
         if not self:
@@ -59,7 +59,7 @@ class MembershipLine(models.Model):
         reverse_map = dict(self._cr.fetchall())
         for line in self:
             move_state = line.account_invoice_id.state
-            payment_state = line.account_invoice_id.invoice_payment_state
+            payment_state = line.account_invoice_id.payment_state
 
             line.state = 'none'
             if move_state == 'draft':
@@ -72,7 +72,7 @@ class MembershipLine(models.Model):
                         line.state = 'paid'
                 elif payment_state == 'in_payment':
                     line.state = 'paid'
-                elif payment_state == 'not_paid':
+                elif payment_state in ('not_paid', 'partial'):
                     line.state = 'invoiced'
             elif move_state == 'cancel':
                 line.state = 'canceled'
diff --git a/addons/membership/models/partner.py b/addons/membership/models/partner.py
index 6d1f6dd0de5..3078a39bc88 100644
--- a/addons/membership/models/partner.py
+++ b/addons/membership/models/partner.py
@@ -39,7 +39,7 @@ class Partner(models.Model):
 
     @api.depends('member_lines.account_invoice_line',
                  'member_lines.account_invoice_line.move_id.state',
-                 'member_lines.account_invoice_line.move_id.invoice_payment_state',
+                 'member_lines.account_invoice_line.move_id.payment_state',
                  'member_lines.account_invoice_line.move_id.partner_id',
                  'free_member',
                  'member_lines.date_to', 'member_lines.date_from',
diff --git a/addons/payment/views/account_invoice_views.xml b/addons/payment/views/account_invoice_views.xml
index 7a224ce2e92..1253e0382a7 100644
--- a/addons/payment/views/account_invoice_views.xml
+++ b/addons/payment/views/account_invoice_views.xml
@@ -10,7 +10,7 @@
                 The user must capture/void the authorized transactions before registering a new payment.
                 -->
                 <xpath expr="//button[@id='account_invoice_payment_btn']" position="attributes">
-                    <attribute name="attrs">{'invisible': ['|', '|', '|', ('state', '!=', 'posted'), ('invoice_payment_state', '!=', 'not_paid'), ('type', 'not in', ('out_invoice', 'out_refund', 'in_invoice', 'in_refund', 'out_receipt', 'in_receipt')), ('authorized_transaction_ids', '!=', [])]}</attribute>
+                    <attribute name="attrs">{'invisible': ['|', '|', '|', ('state', '!=', 'posted'), ('payment_state', 'not in', ('partial', 'not_paid')), ('type', 'not in', ('out_invoice', 'out_refund', 'in_invoice', 'in_refund', 'out_receipt', 'in_receipt')), ('authorized_transaction_ids', '!=', [])]}</attribute>
                 </xpath>
                 <xpath expr="//button[@id='account_invoice_payment_btn']" position="after">
                     <field name="authorized_transaction_ids" invisible="1"/>
diff --git a/addons/point_of_sale/models/account_move.py b/addons/point_of_sale/models/account_move.py
index 5223a4738d7..b218dfa5b79 100644
--- a/addons/point_of_sale/models/account_move.py
+++ b/addons/point_of_sale/models/account_move.py
@@ -21,7 +21,7 @@ class AccountMove(models.Model):
         super(AccountMove, self)._compute_amount()
         pos_invoices = self.filtered(lambda i: i.type in ['out_invoice', 'out_refund'] and i.pos_order_ids)
         for invoice in pos_invoices:
-            invoice.invoice_payment_state = 'paid'
+            invoice.payment_state = 'paid'
 
 class AccountMoveLine(models.Model):
     _inherit = 'account.move.line'
diff --git a/addons/product_margin/models/product_product.py b/addons/product_margin/models/product_product.py
index 3f5c607c987..79a81009217 100644
--- a/addons/product_margin/models/product_product.py
+++ b/addons/product_margin/models/product_product.py
@@ -90,21 +90,21 @@ class ProductProduct(models.Model):
             res[val.id]['date_to'] = date_to
             res[val.id]['invoice_state'] = invoice_state
             states = ()
-            invoice_payment_states = ()
+            payment_states = ()
             if invoice_state == 'paid':
                 states = ('posted',)
-                invoice_payment_states = ('paid',)
+                payment_states = ('paid',)
             elif invoice_state == 'open_paid':
                 states = ('posted',)
-                invoice_payment_states = ('not_paid', 'paid')
+                payment_states = ('not_paid', 'paid')
             elif invoice_state == 'draft_open_paid':
                 states = ('posted', 'draft')
-                invoice_payment_states = ('not_paid', 'paid')
+                payment_states = ('not_paid', 'paid')
             company_id = self.env.company.id
 
             #Cost price is calculated afterwards as it is a property
             self.env['account.move.line'].flush(['price_unit', 'quantity', 'balance', 'product_id', 'display_type'])
-            self.env['account.move'].flush(['state', 'invoice_payment_state', 'type', 'invoice_date', 'company_id'])
+            self.env['account.move'].flush(['state', 'payment_state', 'type', 'invoice_date', 'company_id'])
             self.env['product.template'].flush(['list_price'])
             sqlstr = """
                 WITH currency_rate AS ({})
@@ -124,14 +124,14 @@ class ProductProduct(models.Model):
                  (cr.date_end IS NULL OR cr.date_end > COALESCE(i.invoice_date, NOW())))
                 WHERE l.product_id = %s
                 AND i.state IN %s
-                AND i.invoice_payment_state IN %s
+                AND i.payment_state IN %s
                 AND i.type IN %s
                 AND i.invoice_date BETWEEN %s AND  %s
                 AND i.company_id = %s
                 AND l.display_type IS NULL
                 """.format(self.env['res.currency']._select_companies_rates())
             invoice_types = ('out_invoice', 'in_refund')
-            self.env.cr.execute(sqlstr, (val.id, states, invoice_payment_states, invoice_types, date_from, date_to, company_id))
+            self.env.cr.execute(sqlstr, (val.id, states, payment_states, invoice_types, date_from, date_to, company_id))
             result = self.env.cr.fetchall()[0]
             res[val.id]['sale_avg_price'] = result[0] and result[0] or 0.0
             res[val.id]['sale_num_invoiced'] = result[1] and result[1] or 0.0
@@ -139,7 +139,7 @@ class ProductProduct(models.Model):
             res[val.id]['sale_expected'] = result[3] and result[3] or 0.0
             res[val.id]['sales_gap'] = res[val.id]['sale_expected'] - res[val.id]['turnover']
             invoice_types = ('in_invoice', 'out_refund')
-            self.env.cr.execute(sqlstr, (val.id, states, invoice_payment_states, invoice_types, date_from, date_to, company_id))
+            self.env.cr.execute(sqlstr, (val.id, states, payment_states, invoice_types, date_from, date_to, company_id))
             result = self.env.cr.fetchall()[0]
             res[val.id]['purchase_avg_price'] = result[0] and result[0] or 0.0
             res[val.id]['purchase_num_invoiced'] = result[1] and result[1] or 0.0
diff --git a/addons/purchase_stock/tests/test_anglo_saxon_valuation_reconciliation.py b/addons/purchase_stock/tests/test_anglo_saxon_valuation_reconciliation.py
index 01554c62905..114f8d9a5e1 100644
--- a/addons/purchase_stock/tests/test_anglo_saxon_valuation_reconciliation.py
+++ b/addons/purchase_stock/tests/test_anglo_saxon_valuation_reconciliation.py
@@ -138,7 +138,8 @@ class TestValuationReconciliation(ValuationReconciliationTestCommon):
         refund_invoice = self.env['account.move'].browse(refund_invoice_wiz.reverse_moves()['res_id'])
 
         # Check the result
-        self.assertTrue(invoice.invoice_payment_state == refund_invoice.invoice_payment_state == 'paid'), "Invoice and refund should both be in 'Paid' state"
+        self.assertEqual(invoice.payment_state, 'reversed', "Invoice should be in 'reversed' state")
+        self.assertEqual(refund_invoice.payment_state, 'paid', "Refund should be in 'paid' state")
         self.check_reconciliation(refund_invoice, return_pick)
 
     def test_multiple_shipments_invoices(self):
diff --git a/addons/sale/models/sales_team.py b/addons/sale/models/sales_team.py
index 8bec5cbf10b..9f2d58adde1 100644
--- a/addons/sale/models/sales_team.py
+++ b/addons/sale/models/sales_team.py
@@ -80,7 +80,7 @@ class CrmTeam(models.Model):
             FROM account_move move
             LEFT JOIN account_move_line line ON line.move_id = move.id
             WHERE move.type IN ('out_invoice', 'out_refund', 'in_invoice', 'in_refund')
-            AND move.invoice_payment_state IN ('in_payment', 'paid')
+            AND move.payment_state IN ('in_payment', 'paid')
             AND move.state = 'posted'
             AND move.team_id IN %s
             AND move.date BETWEEN %s AND %s
@@ -96,7 +96,7 @@ class CrmTeam(models.Model):
         data_map = dict((v[0], v[1]) for v in self._cr.fetchall())
         for team in self:
             team.invoiced = data_map.get(team.id, 0.0)
-    
+
     def _graph_get_model(self):
         if self._context.get('in_sales_app'):
             return 'sale.report'
diff --git a/addons/sale/tests/test_sale_refund.py b/addons/sale/tests/test_sale_refund.py
index 3bd9d45850a..4e6af956bbd 100644
--- a/addons/sale/tests/test_sale_refund.py
+++ b/addons/sale/tests/test_sale_refund.py
@@ -199,7 +199,7 @@ class TestSaleToInvoice(TestCommonSaleNoChart):
 
         # Check invoice's type and number
         self.assertEqual(invoice_refund.type, 'out_refund', 'The last created invoiced should be a customer invoice')
-        self.assertEqual(invoice_refund.invoice_payment_state, 'paid', 'Last Customer creadit note should be in paid state')
+        self.assertEqual(invoice_refund.payment_state, 'paid', 'Last Customer creadit note should be in paid state')
         self.assertEqual(self.sale_order.invoice_count, 2, "The SO should have 3 related invoices: the original, the refund, and the new one")
         self.assertEqual(len(self.sale_order.invoice_ids.filtered(lambda inv: inv.type == 'out_refund')), 1, "The SO should be linked to only one refund")
         self.assertEqual(len(self.sale_order.invoice_ids.filtered(lambda inv: inv.type == 'out_invoice')), 1, "The SO should be linked to only one customer invoices")
diff --git a/addons/sale/tests/test_sale_transaction.py b/addons/sale/tests/test_sale_transaction.py
index 6a4c93c5a85..935b07789cf 100644
--- a/addons/sale/tests/test_sale_transaction.py
+++ b/addons/sale/tests/test_sale_transaction.py
@@ -47,7 +47,7 @@ class TestSaleTransaction(AccountTestCommon):
         invoice = self.order._create_invoices()
         invoice.post()
 
-        self.assertEqual(invoice.invoice_payment_state, 'paid')
+        self.assertEqual(invoice.payment_state, 'paid')
 
     def test_sale_transaction_mismatch(self):
         """Test that a transaction for the incorrect amount does not validate the SO."""
diff --git a/addons/sale_stock/tests/test_anglo_saxon_valuation_reconciliation.py b/addons/sale_stock/tests/test_anglo_saxon_valuation_reconciliation.py
index 038990def81..a88ec316542 100644
--- a/addons/sale_stock/tests/test_anglo_saxon_valuation_reconciliation.py
+++ b/addons/sale_stock/tests/test_anglo_saxon_valuation_reconciliation.py
@@ -157,10 +157,8 @@ class TestValuationReconciliation(ValuationReconciliationTestCommon):
             'refund_method': 'cancel',
         })
         refund_invoice = self.env['account.move'].browse(refund_invoice_wiz.reverse_moves()['res_id'])
-        self.assertTrue(
-            invoice.invoice_payment_state == refund_invoice.invoice_payment_state == 'paid',
-            "Invoice and refund should both be in 'Paid' state"
-        )
+        self.assertEqual(invoice.payment_state, 'reversed', "Invoice should be in 'reversed' state.")
+        self.assertEqual(refund_invoice.payment_state, 'paid', "Refund should be in 'paid' state.")
         self.check_reconciliation(refund_invoice, return_pick, operation='sale')
 
     def test_multiple_shipments_invoices(self):
diff --git a/addons/website_sale_digital/controllers/main.py b/addons/website_sale_digital/controllers/main.py
index e4ddceb5f79..f3899b92e10 100644
--- a/addons/website_sale_digital/controllers/main.py
+++ b/addons/website_sale_digital/controllers/main.py
@@ -36,7 +36,7 @@ class WebsiteSaleDigital(CustomerPortal):
         if not 'sale_order' in response.qcontext:
             return response
         order = response.qcontext['sale_order']
-        invoiced_lines = request.env['account.move.line'].sudo().search([('move_id', 'in', order.invoice_ids.ids), ('move_id.invoice_payment_state', '=', 'paid')])
+        invoiced_lines = request.env['account.move.line'].sudo().search([('move_id', 'in', order.invoice_ids.ids), ('move_id.payment_state', '=', 'paid')])
         products = invoiced_lines.mapped('product_id') | order.order_line.filtered(lambda r: not r.price_subtotal).mapped('product_id')
         if not order.amount_total:
             # in that case, we should add all download links to the products
diff --git a/addons/website_sale_digital/models/account_invoice.py b/addons/website_sale_digital/models/account_invoice.py
index 5d5e350912e..e75b42d4a4a 100644
--- a/addons/website_sale_digital/models/account_invoice.py
+++ b/addons/website_sale_digital/models/account_invoice.py
@@ -14,7 +14,7 @@ class AccountInvoiceLine(models.Model):
         # Get paid invoices
         purchases = self.sudo().search_read(
             domain=[
-                ('move_id.invoice_payment_state', '=', 'paid'),
+                ('move_id.payment_state', '=', 'paid'),
                 ('move_id.partner_id', '=', partner.id),
                 ('product_id', '!=', False),
             ],