diff --git a/myproject/myproject/settings.py b/myproject/myproject/settings.py
index 5e67f9a..e61e4f7 100644
--- a/myproject/myproject/settings.py
+++ b/myproject/myproject/settings.py
@@ -91,6 +91,7 @@ TENANT_APPS = [
     'orders',        # Заказы
     'inventory',     # Складской учет
     'pos',           # POS Terminal
+    'discounts',     # Скидки и промокоды
     'system_settings',  # Системные настройки компании (только для владельца)
     # TODO: 'simple_history' - вернуть позже для истории изменений
 ]
diff --git a/myproject/orders/migrations/0003_order_applied_discount_order_applied_promo_code_and_more.py b/myproject/orders/migrations/0003_order_applied_discount_order_applied_promo_code_and_more.py
new file mode 100644
index 0000000..3bdc4ab
--- /dev/null
+++ b/myproject/orders/migrations/0003_order_applied_discount_order_applied_promo_code_and_more.py
@@ -0,0 +1,40 @@
+# Generated by Django 5.0.10 on 2026-01-10 21:12
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('discounts', '0001_initial'),
+        ('orders', '0002_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='order',
+            name='applied_discount',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='orders', to='discounts.discount', verbose_name='Примененная скидка'),
+        ),
+        migrations.AddField(
+            model_name='order',
+            name='applied_promo_code',
+            field=models.CharField(blank=True, max_length=50, null=True, verbose_name='Использованный промокод'),
+        ),
+        migrations.AddField(
+            model_name='order',
+            name='discount_amount',
+            field=models.DecimalField(decimal_places=2, default=0, max_digits=10, verbose_name='Сумма скидки'),
+        ),
+        migrations.AddField(
+            model_name='orderitem',
+            name='applied_discount',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='order_items', to='discounts.discount', verbose_name='Скидка на позицию'),
+        ),
+        migrations.AddField(
+            model_name='orderitem',
+            name='discount_amount',
+            field=models.DecimalField(decimal_places=2, default=0, max_digits=10, verbose_name='Сумма скидки'),
+        ),
+    ]
diff --git a/myproject/orders/models/order.py b/myproject/orders/models/order.py
index 7a4191f..7459ebe 100644
--- a/myproject/orders/models/order.py
+++ b/myproject/orders/models/order.py
@@ -69,6 +69,30 @@ class Order(models.Model):
         help_text="Общая сумма заказа"
     )
 
+    # Скидки
+    applied_discount = models.ForeignKey(
+        'discounts.Discount',
+        on_delete=models.SET_NULL,
+        null=True,
+        blank=True,
+        related_name='orders',
+        verbose_name="Примененная скидка"
+    )
+
+    discount_amount = models.DecimalField(
+        max_digits=10,
+        decimal_places=2,
+        default=0,
+        verbose_name="Сумма скидки"
+    )
+
+    applied_promo_code = models.CharField(
+        max_length=50,
+        blank=True,
+        null=True,
+        verbose_name="Использованный промокод"
+    )
+
     # Частичная оплата
     amount_paid = models.DecimalField(
         max_digits=10,
@@ -382,18 +406,21 @@ class Order(models.Model):
     def calculate_total(self):
         """
         Пересчитывает итоговую сумму заказа.
-        total_amount = subtotal + delivery_cost
+        total_amount = subtotal + delivery_cost - discount_amount
         """
         from decimal import Decimal
-        
+
         subtotal = self.subtotal
         delivery_cost = Decimal('0')
-        
+
         # Получаем стоимость доставки из связанной модели Delivery
         if hasattr(self, 'delivery'):
             delivery_cost = self.delivery.cost
-        
-        self.total_amount = subtotal + delivery_cost
+
+        # Вычитаем скидку на весь заказ (если есть)
+        order_discount = Decimal(str(self.discount_amount)) if self.discount_amount else Decimal('0')
+
+        self.total_amount = subtotal + delivery_cost - order_discount
         self.save(update_fields=['total_amount'])
 
     def reset_delivery_cost(self):
diff --git a/myproject/orders/models/order_item.py b/myproject/orders/models/order_item.py
index 980be3c..bca0aaf 100644
--- a/myproject/orders/models/order_item.py
+++ b/myproject/orders/models/order_item.py
@@ -82,6 +82,23 @@ class OrderItem(models.Model):
         help_text="True если цена была изменена вручную при создании заказа"
     )
 
+    # Скидки
+    applied_discount = models.ForeignKey(
+        'discounts.Discount',
+        on_delete=models.SET_NULL,
+        null=True,
+        blank=True,
+        related_name='order_items',
+        verbose_name="Скидка на позицию"
+    )
+
+    discount_amount = models.DecimalField(
+        max_digits=10,
+        decimal_places=2,
+        default=0,
+        verbose_name="Сумма скидки"
+    )
+
     # Витринные продажи
     is_from_showcase = models.BooleanField(
         default=False,
@@ -214,8 +231,10 @@ class OrderItem(models.Model):
         super().save(*args, **kwargs)
 
     def get_total_price(self):
-        """Возвращает общую стоимость позиции"""
-        return self.price * self.quantity
+        """Возвращает общую стоимость позиции с учетом скидки"""
+        subtotal = self.price * self.quantity
+        discount = Decimal(str(self.discount_amount)) if self.discount_amount else Decimal('0')
+        return subtotal - discount
 
     @property
     def item_name(self):