diff --git a/modules/purchase_trade/docs/template-properties.md b/modules/purchase_trade/docs/template-properties.md
index 892f657..151734e 100644
--- a/modules/purchase_trade/docs/template-properties.md
+++ b/modules/purchase_trade/docs/template-properties.md
@@ -319,8 +319,11 @@ Source code: `modules/purchase_trade/stock.py`
 
 Usage typique:
 - templates shipment relies a l'assurance
+- `report_insurance_amount`: montant affiche dans `Amount insured` (priorite a
+  `110%` du total incoming, fallback fee `Insurance`)
 - `report_insurance_incoming_amount`: somme `incoming_moves` de
-  `quantity * unit_price`
+  `quantity * unit_price`, avec fallback lot
+  (`lot.line.unit_price * lot.get_current_quantity_converted()`)
 - `report_insurance_amount_insured`: `110%` de
   `report_insurance_incoming_amount`
 - base de travail pour un certificat d'assurance lie a un shipment
diff --git a/modules/purchase_trade/docs/template-rules.md b/modules/purchase_trade/docs/template-rules.md
index b52c904..908e03e 100644
--- a/modules/purchase_trade/docs/template-rules.md
+++ b/modules/purchase_trade/docs/template-rules.md
@@ -151,9 +151,14 @@ Derniere mise a jour: `2026-04-02`
 - Source de verite du montant assure:
   - sommer les montants des `incoming_moves` du shipment
   - montant d'un move = `move.quantity * move.unit_price`
+  - si `move.unit_price` est vide, fallback via lot:
+    `lot.line.unit_price * lot.get_current_quantity_converted()`
   - exposer au moins:
     - le montant total des incoming moves
     - le montant assure a `110%` de ce total
+  - pour le placeholder `Amount insured`, `report_insurance_amount` doit
+    afficher ce `110%`, avec fallback fee `Insurance` si aucun montant
+    incoming n'est calculable
 
 ### TR-016 - Hypotheses actuelles pour le certificat d'assurance shipment
 
diff --git a/modules/purchase_trade/stock.py b/modules/purchase_trade/stock.py
index 4efd498..352408a 100755
--- a/modules/purchase_trade/stock.py
+++ b/modules/purchase_trade/stock.py
@@ -491,13 +491,32 @@ class ShipmentIn(metaclass=PoolMeta):
         total = Decimal('0.0')
         currency = None
         for move in (self.incoming_moves or []):
-            quantity = Decimal(str(getattr(move, 'quantity', 0) or 0))
-            unit_price = Decimal(str(getattr(move, 'unit_price', 0) or 0))
-            total += (quantity * unit_price)
-            if not currency:
-                currency = getattr(move, 'currency', None)
+            move_amount, move_currency = self._get_report_incoming_move_amount(
+                move)
+            total += move_amount
+            if not currency and move_currency:
+                currency = move_currency
         return total, currency
 
+    def _get_report_incoming_move_amount(self, move):
+        quantity = Decimal(str(getattr(move, 'quantity', 0) or 0))
+        unit_price = getattr(move, 'unit_price', None)
+        if unit_price not in (None, ''):
+            move_currency = getattr(move, 'currency', None)
+            return quantity * Decimal(str(unit_price or 0)), move_currency
+
+        lot = getattr(move, 'lot', None)
+        line = getattr(lot, 'line', None) if lot else None
+        if not lot or not line:
+            return Decimal('0.0'), None
+
+        lot_quantity = Decimal(str(
+            lot.get_current_quantity_converted() or 0))
+        line_unit_price = Decimal(str(getattr(line, 'unit_price', 0) or 0))
+        trade = getattr(line, 'purchase', None)
+        line_currency = getattr(trade, 'currency', None) if trade else None
+        return lot_quantity * line_unit_price, line_currency
+
     @staticmethod
     def _get_report_currency_text(currency):
         return (
@@ -574,6 +593,13 @@ class ShipmentIn(metaclass=PoolMeta):
 
     @property
     def report_insurance_amount(self):
+        insured_amount, insured_currency = self._get_report_incoming_amount_data()
+        if insured_amount:
+            insured_amount *= Decimal('1.10')
+            currency_text = self._get_report_currency_text(insured_currency)
+            amount_text = self._format_report_amount(insured_amount)
+            return ' '.join(part for part in [currency_text, amount_text] if part)
+
         fee = self._get_report_insurance_fee()
         if not fee:
             return ''
diff --git a/modules/purchase_trade/tests/test_module.py b/modules/purchase_trade/tests/test_module.py
index 96a5954..b32841a 100644
--- a/modules/purchase_trade/tests/test_module.py
+++ b/modules/purchase_trade/tests/test_module.py
@@ -509,6 +509,27 @@ class PurchaseTradeTestCase(ModuleTestCase):
                 shipment.report_insurance_issue_place_and_date,
                 'GENEVA, 06-04-2026')
 
+    def test_shipment_insurance_amount_fallback_uses_lot_and_incoming_moves(self):
+        'insurance amount falls back to lot unit price and shipment quantities'
+        ShipmentIn = Pool().get('stock.shipment.in')
+        shipment = ShipmentIn()
+
+        purchase_currency = Mock(rec_name='USD')
+        purchase = Mock(currency=purchase_currency)
+        line = Mock(unit_price=Decimal('100'), purchase=purchase)
+        lot = Mock(line=line)
+        lot.get_current_quantity_converted = Mock(return_value=Decimal('5'))
+        move = Mock(quantity=Decimal('0'), unit_price=None, currency=None, lot=lot)
+        shipment.incoming_moves = [move]
+        shipment.fees = []
+
+        self.assertEqual(
+            shipment.report_insurance_incoming_amount, 'USD 500.00')
+        self.assertEqual(
+            shipment.report_insurance_amount_insured, 'USD 550.00')
+        self.assertEqual(
+            shipment.report_insurance_amount, 'USD 550.00')
+
     def test_sale_report_multi_line_helpers_aggregate_all_lines(self):
         'sale report helpers aggregate quantity, price lines and shipment periods'
         Sale = Pool().get('sale.sale')