diff --git a/.idea/misc.xml b/.idea/misc.xml
index 6ba69809..d56657ad 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.9 (unicoding)" project-jdk-type="Python SDK" />
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.9" project-jdk-type="Python SDK" />
 </project>
\ No newline at end of file
diff --git a/.idea/unicoding.iml b/.idea/unicoding.iml
index 3e4215da..b3643bb4 100644
--- a/.idea/unicoding.iml
+++ b/.idea/unicoding.iml
@@ -14,7 +14,7 @@
   </component>
   <component name="NewModuleRootManager">
     <content url="file://$MODULE_DIR$" />
-    <orderEntry type="jdk" jdkName="Python 3.9 (unicoding)" jdkType="Python SDK" />
+    <orderEntry type="jdk" jdkName="Python 3.9" jdkType="Python SDK" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
   <component name="TemplatesService">
diff --git a/accounting/api/account.py b/accounting/api/account.py
index e843e616..e0cdeac5 100644
--- a/accounting/api/account.py
+++ b/accounting/api/account.py
@@ -1,13 +1,11 @@
-from ninja import Router
-from ninja.security import django_auth
-from django.shortcuts import get_object_or_404
-from accounting.models import Account, AccountTypeChoices
-from accounting.schemas import AccountOut, FourOFourOut, GeneralLedgerOut
 from typing import List
-from django.db.models import Sum, Avg
+
+from django.shortcuts import get_object_or_404
+from ninja import Router
 from rest_framework import status
 
-from restauth.authorization import AuthBearer
+from accounting.models import Account, AccountTypeChoices, Balance
+from accounting.schemas import AccountOut, FourOFourOut, GeneralLedgerOut
 
 account_router = Router(tags=['account'])
 
@@ -51,7 +49,7 @@ def get_account_balances(request):
     result = []
     for a in accounts:
         result.append({
-            'account': a.name, 'balance': list(a.balance())
+            'account': a.name, 'balance': list(a.main_balance())
         })
 
     return status.HTTP_200_OK, result
@@ -59,29 +57,5 @@ def get_account_balances(request):
 
 
 
-class Balance:
-    def __init__(self, balances):
-        balance1 = balances[0]
-        balance2 = balances[1]
-
-        if balance1['currency'] == 'USD':
-            balanceUSD = balance1['sum']
-            balanceIQD = balance2['sum']
-        else:
-            balanceIQD = balance1['sum']
-            balanceUSD = balance2['sum']
-
-        self.balanceUSD = balanceUSD
-        self.balanceIQD = balanceIQD
 
-    def __add__(self, other):
-        self.balanceIQD += other.balanceIQD
-        self.balanceUSD += other.balanceUSD
-        return [{
-            'currency': 'USD',
-            'sum': self.balanceUSD
-        }, {
-            'currency': 'IQD',
-            'sum': self.balanceIQD
-        }]
 
diff --git a/accounting/models.py b/accounting/models.py
index a7d49b7f..18962d2b 100644
--- a/accounting/models.py
+++ b/accounting/models.py
@@ -3,6 +3,7 @@
 from django.dispatch import receiver
 from django.db.models.signals import post_save
 from accounting.exceptions import AccountingEquationError
+from decimal import Decimal
 
 '''
 
@@ -27,6 +28,71 @@
 * Each Transaction should consist of two or more even numbered Journal Entries
 
 '''
+class Balance:
+
+    def __init__(self, balances):
+
+            try:
+                balance1 = balances[0]
+            except IndexError:
+                balance1 = {'currency': 'USD', 'sum': 0}
+            try:
+                balance2 = balances[1]
+            except IndexError:
+                if balance1['currency'] == 'USD':
+                    balance2 = {'currency': 'IQD', 'sum': Decimal(0)}
+                else:
+                    balance2 = {'currency': 'USD', 'sum': Decimal(0)}
+
+            if balance1['currency'] == 'USD':
+                balanceUSD = balance1['sum']
+                balanceIQD = balance2['sum']
+            else:
+                balanceIQD = balance1['sum']
+                balanceUSD = balance2['sum']
+
+            self.balanceUSD = balanceUSD
+            self.balanceIQD = balanceIQD
+
+    def __add__(self, other):
+            print(self.balanceIQD)
+            self.balanceIQD += other.balanceIQD
+            print(self.balanceIQD)
+            print(self.balanceUSD)
+            self.balanceUSD += other.balanceUSD
+            return [{
+                'currency': 'USD',
+                'sum': self.balanceUSD
+            }, {
+                'currency': 'IQD',
+                'sum': self.balanceIQD
+            }]
+
+    def __radd__(self, other):
+        if other == 0:  #
+            return self
+        else:
+            return self.__add__(other)
+
+    def __gt__(self, other):
+        obj_balance1 = self.balanceUSD > other.balanceIQD
+        obj_balance2 = self.balanceIQD > other.balanceUSD
+        return obj_balance1, obj_balance2
+
+    def __lt__(self, other):
+        obj_balance1 = self.balanceUSD < other.balanceUSD
+        obj_balance2 = self.balanceIQD < other.balanceIQD
+        return obj_balance1, obj_balance2
+
+    def e_t_z(self):
+        if self.balanceUSD == 0 and self.balanceIQD == 0:
+            return True
+        else:
+            return False
+
+
+
+
 
 
 class AccountTypeChoices(models.TextChoices):
@@ -48,19 +114,38 @@ class CurrencyChoices(models.TextChoices):
     IQD = 'IQD', 'IQD'
 
 
-class Account(models.Model):
-    parent = models.ForeignKey('self', null=True, blank=True, on_delete=models.SET_NULL)
-    type = models.CharField(max_length=255, choices=AccountTypeChoices.choices)
-    name = models.CharField(max_length=255)
-    code = models.CharField(max_length=20, null=True, blank=True)
-    full_code = models.CharField(max_length=25, null=True, blank=True)
-    extra = models.JSONField(default=dict, null=True, blank=True)
 
-    def __str__(self):
-        return f'{self.full_code} - {self.name}'
 
-    def balance(self):
-        return self.journal_entries.values('currency').annotate(sum=Sum('amount')).order_by()
+class Account(models.Model):
+        parent = models.ForeignKey('self', null=True, blank=True, on_delete=models.SET_NULL, related_name='children')
+        type = models.CharField(max_length=255, choices=AccountTypeChoices.choices)
+        name = models.CharField(max_length=255)
+        code = models.CharField(max_length=20, null=True, blank=True)
+        full_code = models.CharField(max_length=25, null=True, blank=True)
+        extra = models.JSONField(default=dict, null=True, blank=True)
+
+        def __str__(self):
+            return f'{self.full_code} - {self.name}'
+
+        def balance(self):
+            return self.journal_entries.values('currency').annotate(sum=Sum('amount')).order_by()
+
+        def main_balance(self):
+            child = self.children.all()
+            list_of_balances = []
+
+            if len(child) == 0:
+                return self.balance()
+
+            elif len(child) > 0:
+                if len(child) == 1:
+                    return self.balance()
+                else:
+                    for k in list(child):
+                        list_of_child = k.balance()
+                        obj = Balance(list_of_child)
+                        list_of_balances.append(obj)
+            return sum(list_of_balances)
 
     # def save(
     #         self, force_insert=False, force_update=False, using=None, update_fields=None