diff --git a/addons/account/models/account_payment_term.py b/addons/account/models/account_payment_term.py
index 218f3498540..8c23d76fb09 100644
--- a/addons/account/models/account_payment_term.py
+++ b/addons/account/models/account_payment_term.py
@@ -184,39 +184,35 @@ class AccountPaymentTerm(models.Model):
                 pay_term['discount_balance'] = company_currency.round(total_amount * (1 - discount_percentage))
                 pay_term['discount_amount_currency'] = currency.round(total_amount_currency * (1 - discount_percentage))
 
-        # Remove all fixed amounts.
         rate = abs(total_amount_currency / total_amount) if total_amount else 0.0
-        for line in self.line_ids:
-            if line.value == 'fixed':
-                total_amount_currency -= line.value_amount
-                total_amount -= currency.round(line.value_amount / rate) if rate else 0.0
-
         residual_amount = total_amount
         residual_amount_currency = total_amount_currency
 
-        #We sort by the last line of a term
-        term_lines = self.line_ids.sorted(lambda l: l == self.line_ids[-1])
-        last_percent_line = term_lines.filtered(lambda l: l.value == 'percent')[-1:]
-        for line in self.line_ids.sorted(lambda l: l == self.line_ids[-1]):
+        for i, line in enumerate(self.line_ids):
             term_vals = {
                 'date': line._get_due_date(date_ref),
                 'company_amount': 0,
                 'foreign_amount': 0,
             }
-            if line.value == 'fixed':
-                term_vals['company_amount'] = sign * company_currency.round(line.value_amount / rate) if rate else 0.0
-                term_vals['foreign_amount'] = sign * currency.round(line.value_amount)
-            elif line == last_percent_line:
+
+            if i == len(self.line_ids) - 1:
+                # The last line is always the balance, no matter the type
                 term_vals['company_amount'] = residual_amount
                 term_vals['foreign_amount'] = residual_amount_currency
+            elif line.value == 'fixed':
+                # Fixed amounts
+                term_vals['company_amount'] = sign * company_currency.round(line.value_amount / rate) if rate else 0.0
+                term_vals['foreign_amount'] = sign * currency.round(line.value_amount)
             else:
+                # Percentage amounts
                 line_amount = company_currency.round(total_amount * (line.value_amount / 100.0))
                 line_amount_currency = currency.round(total_amount_currency * (line.value_amount / 100.0))
                 term_vals['company_amount'] = line_amount
                 term_vals['foreign_amount'] = line_amount_currency
-                residual_amount -= line_amount
-                residual_amount_currency -= line_amount_currency
-            pay_term["line_ids"].append(term_vals)
+
+            residual_amount -= term_vals['company_amount']
+            residual_amount_currency -= term_vals['foreign_amount']
+            pay_term['line_ids'].append(term_vals)
 
         return pay_term
 
diff --git a/addons/account/tests/test_payment_term.py b/addons/account/tests/test_payment_term.py
index 158333e40fe..4589a3d0d47 100644
--- a/addons/account/tests/test_payment_term.py
+++ b/addons/account/tests/test_payment_term.py
@@ -240,7 +240,7 @@ class TestAccountPaymentTerms(AccountTestInvoicingCommon):
                 )
                 for l in computed_term['line_ids']
             ],
-            [(0.035, 0.02), (0.035, 0.01), (0.02, 0.01)],
+            [(0.045, 0.02), (0.045, 0.02), (0.0, 0.0)],
         )
 
     def test_payment_term_residual_amount_on_last_line(self):
@@ -268,3 +268,104 @@ class TestAccountPaymentTerms(AccountTestInvoicingCommon):
             [self.env.company.currency_id.round(l['foreign_amount']) for l in computed_term['line_ids']],
             [0.02, 0.01],
         )
+
+    def test_payment_term_last_balance_line_with_fixed(self):
+        pay_term = self.env['account.payment.term'].create({
+            'name': 'test_payment_term_last_balance_line_with_fixed',
+            'line_ids': [
+                Command.create({
+                    'value_amount': 70,
+                    'value': 'percent',
+                    'nb_days': 0,
+                }),
+                Command.create({
+                    'value_amount': 200,
+                    'value': 'fixed',
+                    'nb_days': 0,
+                }),
+                Command.create({
+                    'value_amount': 30,
+                    'value': 'percent',
+                    'nb_days': 0,
+                }),
+            ]
+        })
+
+        computed_term = pay_term._compute_terms(
+            fields.Date.from_string('2016-01-01'), self.env.company.currency_id, self.env.company,
+            0.0, 0.0, 1.0, 1000.0, 1000.0,
+        )
+
+        self.assertEqual(
+            [self.env.company.currency_id.round(l['foreign_amount']) for l in computed_term['line_ids']],
+            [700.0, 200.0, 100.0],
+        )
+
+    def test_payment_term_last_balance_line_with_fixed_negative(self):
+        pay_term = self.env['account.payment.term'].create({
+            'name': 'test_payment_term_last_balance_line_with_fixed_negative',
+            'line_ids': [
+                Command.create({
+                    'value_amount': 70,
+                    'value': 'percent',
+                    'nb_days': 0,
+                }),
+                Command.create({
+                    'value_amount': 500,
+                    'value': 'fixed',
+                    'nb_days': 0,
+                }),
+                Command.create({
+                    'value_amount': 30,
+                    'value': 'percent',
+                    'nb_days': 0,
+                }),
+            ]
+        })
+
+        computed_term = pay_term._compute_terms(
+            fields.Date.from_string('2016-01-01'), self.env.company.currency_id, self.env.company,
+            0.0, 0.0, 1.0, 1000.0, 1000.0,
+        )
+
+        self.assertEqual(
+            [self.env.company.currency_id.round(l['foreign_amount']) for l in computed_term['line_ids']],
+            [700.0, 500.0, -200.0],
+        )
+
+    def test_payment_term_last_balance_line_with_fixed_negative_fixed(self):
+        pay_term = self.env['account.payment.term'].create({
+            'name': 'test_payment_term_last_balance_line_with_fixed_negative_fixed',
+            'line_ids': [
+                Command.create({
+                    'value_amount': 70,
+                    'value': 'percent',
+                    'nb_days': 0,
+                }),
+                Command.create({
+                    'value_amount': 500,
+                    'value': 'fixed',
+                    'nb_days': 0,
+                }),
+                Command.create({
+                    'value_amount': 30,
+                    'value': 'percent',
+                    'nb_days': 0,
+                }),
+                Command.create({
+                    'value_amount': 200,
+                    'value': 'fixed',
+                    'nb_days': 0,
+                }),
+            ]
+        })
+
+        computed_term = pay_term._compute_terms(
+            fields.Date.from_string('2016-01-01'), self.env.company.currency_id, self.env.company,
+            0.0, 0.0, 1.0, 1000.0, 1000.0,
+        )
+
+        self.assertEqual(
+            [self.env.company.currency_id.round(l['foreign_amount']) for l in computed_term['line_ids']],
+            [700.0, 500.0, 300.0, -500.0],
+        )
diff --git a/addons/account/views/account_payment_term_views.xml b/addons/account/views/account_payment_term_views.xml
index 1658dbfaacd..d62c7eb331b 100644
--- a/addons/account/views/account_payment_term_views.xml
+++ b/addons/account/views/account_payment_term_views.xml
@@ -74,7 +74,9 @@
                             <group string="Preview">
                                 <field name="currency_id" invisible="1"/>
                                 <div class="d-flex gap-2" colspan="2" col="4">
-                                    <span>Example: $ 1000 on</span>
+                                    Example:
+                                    <field name="example_amount" class="oe_inline"/>
+                                    on
                                     <field name="example_date" class="fw-bold oe_inline"/>
                                 </div>
                                 <div colspan="2" style="background:#e0e0e0" class="pt4 pb4">