diff --git a/inventory/forms.py b/inventory/forms.py
index 4d513bb7..3ce4188c 100644
--- a/inventory/forms.py
+++ b/inventory/forms.py
@@ -1,4 +1,5 @@
 from django_countries.widgets import CountrySelectWidget
+from django_ledger.models.bill import BillModel
 from phonenumber_field.formfields import PhoneNumberField
 from django.core.validators import MinLengthValidator
 from django.core.validators import RegexValidator
@@ -544,7 +545,10 @@ class ItemForm(forms.Form):
 
 class PaymentForm(forms.Form):
     invoice = forms.ModelChoiceField(
-        queryset=InvoiceModel.objects.all(), label="Invoice", required=True
+        queryset=InvoiceModel.objects.all(), label="Invoice", required=False
+    )
+    bill = forms.ModelChoiceField(
+        queryset=BillModel.objects.all(), label="Bill", required=False
     )
     amount = forms.DecimalField(label="Amount", required=True)
     payment_method = forms.ChoiceField(
@@ -562,15 +566,17 @@ class PaymentForm(forms.Form):
         
     def clean_amount(self):
         invoice = self.cleaned_data['invoice']
+        bill = self.cleaned_data['bill']
+        model = invoice if invoice else bill
         amount = self.cleaned_data['amount']
-        if amount < invoice.amount_due:
-            raise forms.ValidationError("Payment amount is greater than invoice amount due")
+        if amount + model.amount_paid > model.amount_due:
+            raise forms.ValidationError("Payment amount is greater than amount due")
         if amount <= 0:
             raise forms.ValidationError("Payment amount must be greater than 0")
-        if invoice.amount_due == invoice.amount_paid or invoice.invoice_status == "paid":
+        if model.is_paid():
             raise forms.ValidationError("Invoice is already paid")        
-        if amount > invoice.amount_due:
-            raise forms.ValidationError("Payment amount is greater than invoice amount due")            
+        if amount > model.amount_due:
+            raise forms.ValidationError("Payment amount is greater than amount due")            
         return amount
     
     
diff --git a/inventory/urls.py b/inventory/urls.py
index 5e2e23f5..aefc18a4 100644
--- a/inventory/urls.py
+++ b/inventory/urls.py
@@ -482,6 +482,14 @@ urlpatterns = [
         name="bill_detail",
     ),
     path("items/bills/<uuid:pk>/delete/", views.BillDeleteView, name="bill_delete"),
+    path(
+        "items/bills/<uuid:pk>/in_review/",views.InReviewBillView.as_view(), name="in_review_bill"
+    ),
+    path(
+        "items/bills/<uuid:pk>/in_approve/",views.ApprovedBillModelView.as_view(), name="in_approve_bill"
+    ),
+    path('items/bills/<uuid:pk>/mark_as_approved/', views.bill_mark_as_approved, name='bill_mark_as_approved'),
+    path('items/bills/<uuid:pk>/mark_as_paid/', views.bill_mark_as_paid, name='bill_mark_as_paid'),
 ]
 
 
diff --git a/inventory/utils.py b/inventory/utils.py
index 135450fb..0fb8acfb 100644
--- a/inventory/utils.py
+++ b/inventory/utils.py
@@ -1,6 +1,9 @@
 from django.shortcuts import redirect
 from django.contrib import messages
 from django.utils import timezone
+from django_ledger.models.journal_entry import JournalEntryModel
+from django_ledger.models.ledger import LedgerModel
+from django_ledger.models.transactions import TransactionModel
 import requests
 from inventory import models
 from django.conf import settings
@@ -179,3 +182,130 @@ def get_financial_values(model):
         "vat_amount": vat_amount,
         "vat": vat.rate,
     }
+
+
+def set_invoice_payment(dealer, entity, invoice, amount, payment_method):
+    vat_amount = 0
+    total_amount = 0
+
+    if invoice.terms == "on_receipt":
+        for x in invoice.get_itemtxs_data()[0].all():
+            vat_amount += models.Car.objects.get(
+                vin=x.item_model.name
+            ).finances.vat_amount * Decimal(x.quantity)
+            total_amount += Decimal(x.unit_cost) * Decimal(x.quantity)
+
+    grand_total = total_amount - Decimal(vat_amount)
+
+    ledger = LedgerModel.objects.filter(
+        name__icontains=str(invoice.pk), entity=entity
+    ).first()
+    journal = JournalEntryModel.objects.create(
+        posted=False,
+        description=f"Payment for Invoice {invoice.invoice_number}",
+        ledger=ledger,
+        locked=False,
+        origin="Payment",
+    )
+    credit_account = entity.get_default_coa_accounts().get(name="Sales Revenue")
+    debit_account = None
+    if payment_method == "cash":
+        debit_account = entity.get_default_coa_accounts().get(name="Cash", active=True)
+    elif payment_method == "credit":
+        debit_account = entity.get_default_coa_accounts().get(
+            name="Accounts Receivable", active=True
+        )
+    else:
+        debit_account = entity.get_default_coa_accounts().get(
+            name="Cash in Bank", active=True
+        )
+
+    vat_payable_account = entity.get_default_coa_accounts().get(
+        name="VAT Payable", active=True
+    )
+    TransactionModel.objects.create(
+        journal_entry=journal,
+        account=debit_account,  # Debit Cash
+        amount=amount,  # Payment amount
+        tx_type="debit",
+        description="Payment Received",
+    )
+
+    TransactionModel.objects.create(
+        journal_entry=journal,
+        account=credit_account,  # Credit Accounts Receivable
+        amount=grand_total,  # Payment amount
+        tx_type="credit",
+        description="Payment Received",
+    )
+
+    if vat_amount > 0:
+        TransactionModel.objects.create(
+            journal_entry=journal,
+            account=vat_payable_account,  # Credit VAT Payable
+            amount=vat_amount,
+            tx_type="credit",
+            description="VAT Payable on Invoice",
+        )
+
+    invoice.make_payment(amount)
+    invoice.save()
+
+
+def set_bill_payment(dealer, entity, bill, amount, payment_method):
+    vat_amount = 0
+    total_amount = 0
+
+    if bill.terms == "on_receipt":
+        for x in bill.get_itemtxs_data()[0].all():
+            vat_amount += models.Car.objects.get(
+                vin=x.item_model.name
+            ).finances.cost_price * Decimal(x.quantity)
+            total_amount += Decimal(x.unit_cost) * Decimal(x.quantity)
+
+    # grand_total = total_amount - Decimal(vat_amount)
+    
+    journal = JournalEntryModel.objects.create(
+        posted=False,
+        description=f"Payment for bill {bill.bill_number}",
+        ledger=bill.ledger,
+        locked=False,
+        origin="Payment",
+    )
+
+    cash_account = entity.get_default_coa_accounts().get(name="Cash", active=True)
+
+    account_payable = entity.get_default_coa_accounts().get(
+        name="Accounts Payable", active=True
+    )
+
+    # vat_payable_account = entity.get_default_coa_accounts().get(
+    #     name="VAT Payable", active=True
+    # )
+    TransactionModel.objects.create(
+        journal_entry=journal,
+        account=cash_account,  # Debit Cash
+        amount=amount,  # Payment amount
+        tx_type="debit",
+        description="Payment Received",
+    )
+
+    TransactionModel.objects.create(
+        journal_entry=journal,
+        account=account_payable,  # Credit Accounts Receivable
+        amount=amount,  # Payment amount
+        tx_type="credit",
+        description="Payment Received",
+    )
+
+    # if vat_amount > 0:
+    #     TransactionModel.objects.create(
+    #         journal_entry=journal,
+    #         account=vat_payable_account,  # Credit VAT Payable
+    #         amount=vat_amount,
+    #         tx_type="credit",
+    #         description="VAT Payable on bill",
+    #     )
+
+    bill.make_payment(amount)
+    bill.save()
diff --git a/inventory/views.py b/inventory/views.py
index 704c968f..ee24882e 100644
--- a/inventory/views.py
+++ b/inventory/views.py
@@ -3,6 +3,7 @@ from django.core.paginator import Paginator
 from django.forms import DateField, DateInput, HiddenInput, TextInput
 from django.utils.decorators import method_decorator
 from django.views.decorators.csrf import csrf_exempt
+from django_ledger.forms.bill import ApprovedBillModelUpdateForm, InReviewBillModelUpdateForm
 from django_ledger.models import (
     EntityModel,
     InvoiceModel,
@@ -80,6 +81,8 @@ from .utils import (
     reserve_car,
     send_email,
     get_user_type,
+    set_bill_payment,
+    set_invoice_payment,
 )
 from django.contrib.auth.models import User
 from allauth.account import views
@@ -2423,6 +2426,9 @@ class InvoicePreviewView(LoginRequiredMixin, DetailView):
 
 def PaymentCreateView(request, pk=None):
     invoice = InvoiceModel.objects.filter(pk=pk).first()
+    bill = BillModel.objects.filter(pk=pk).first()
+    model = invoice if invoice else bill
+    redirect_url = 'invoice_detail' if invoice else 'bill_detail'
     dealer = get_user_type(request)
     entity = dealer.entity
     form = forms.PaymentForm()
@@ -2431,89 +2437,36 @@ def PaymentCreateView(request, pk=None):
         if form.is_valid():
             amount = form.cleaned_data.get("amount")
             invoice = form.cleaned_data.get("invoice")
+            bill = form.cleaned_data.get("bill")
             payment_method = form.cleaned_data.get("payment_method")
+            model = invoice if invoice else bill
+            if not model.is_approved():
+                model.mark_as_approved(user_model=entity.admin)
             try:
-                vat_amount = 0
-                total_amount = 0
-
-                if invoice.terms == "on_receipt":
-                    for x in invoice.get_itemtxs_data()[0].all():
-                        vat_amount += models.Car.objects.get(
-                            vin=x.item_model.name
-                        ).finances.vat_amount * Decimal(x.quantity)
-                        total_amount += Decimal(x.unit_cost) * Decimal(x.quantity)
-
-                grand_total = total_amount - Decimal(vat_amount)
-
-                ledger = LedgerModel.objects.filter(
-                    name=str(invoice.pk), entity=entity
-                ).first()
-                journal = JournalEntryModel.objects.create(
-                    posted=False,
-                    description=f"Payment for Invoice {invoice.invoice_number}",
-                    ledger=ledger,
-                    locked=False,
-                    origin="Payment",
-                )
-                credit_account = entity.get_default_coa_accounts().get(
-                    name="Sales Revenue"
-                )
-                debit_account = None
-                if payment_method == "cash":
-                    debit_account = entity.get_default_coa_accounts().get(
-                        name="Cash", active=True
-                    )
-                elif payment_method == "credit":
-                    debit_account = entity.get_default_coa_accounts().get(
-                        name="Accounts Receivable", active=True
-                    )
-                else:
-                    debit_account = entity.get_default_coa_accounts().get(
-                        name="Cash in Bank", active=True
-                    )
-
-                vat_payable_account = entity.get_default_coa_accounts().get(
-                    name="VAT Payable", active=True
-                )
-                TransactionModel.objects.create(
-                    journal_entry=journal,
-                    account=debit_account,  # Debit Cash
-                    amount=amount,  # Payment amount
-                    tx_type="debit",
-                    description="Payment Received",
-                )
-
-                TransactionModel.objects.create(
-                    journal_entry=journal,
-                    account=credit_account,  # Credit Accounts Receivable
-                    amount=grand_total,  # Payment amount
-                    tx_type="credit",
-                    description="Payment Received",
-                )
-
-                if vat_amount > 0:
-                    TransactionModel.objects.create(
-                        journal_entry=journal,
-                        account=vat_payable_account,  # Credit VAT Payable
-                        amount=vat_amount,
-                        tx_type="credit",
-                        description="VAT Payable on Invoice",
-                    )
-
-                invoice.make_payment(amount)
-                invoice.save()
+                if invoice:
+                    set_invoice_payment(dealer,entity,invoice,amount,payment_method)
+                elif bill:
+                    set_bill_payment(dealer,entity,bill,amount,payment_method)
+                return redirect(redirect_url, pk=model.pk)                
             except Exception as e:
                 messages.error(request, f"Error creating payment: {str(e)}")
         else:
-            messages.error(request, f"Invalid form data: {str(form.errors)}")
-            return redirect("invoice_detail", pk=invoice.pk)
+            messages.error(request, f"Invalid form data: {str(form.errors)}")            
+            # return redirect(redirect_url, pk=model.pk)
     form = forms.PaymentForm()
-    form.initial["amount"] = invoice.amount_due
+    form.initial["amount"] = model.amount_due - model.amount_paid
+
+    if model:
+        if isinstance(model, InvoiceModel):
+            form.initial["invoice"] = model
+            form.fields['bill'].widget = HiddenInput()
+
+        elif isinstance(model, BillModel):
+            form.initial["bill"] = model
+            form.fields['invoice'].widget = HiddenInput()
 
-    if invoice:
-        form.initial["invoice"] = invoice
     return render(
-        request, "sales/payments/payment_form.html", {"invoice": invoice, "form": form}
+        request, "sales/payments/payment_form.html", {"model": model, "form": form}
     )
 
 
@@ -2926,6 +2879,96 @@ class BillDetailView(LoginRequiredMixin, DetailView):
         return super().get_context_data(**kwargs)
 
 
+class InReviewBillView(LoginRequiredMixin, UpdateView):
+    model = BillModel
+    form_class = InReviewBillModelUpdateForm
+    template_name = "ledger/bills/bill_update_form.html"
+    success_url = reverse_lazy("bill_list")
+    success_message = _("Bill updated successfully.")    
+    context_object_name = "bill"
+    
+    def get_form_kwargs(self):
+        kwargs = super().get_form_kwargs()
+        dealer = get_user_type(self.request)
+        kwargs["entity_model"] = dealer.entity
+        kwargs["user_model"] = dealer.entity.admin
+        return kwargs
+    
+    def get_success_url(self):
+        return reverse_lazy("bill_detail", kwargs={"pk": self.kwargs["pk"]})
+
+    def form_valid(self, form):
+        dealer = get_user_type(self.request)
+        form.instance.entity = dealer.entity
+        self.object.mark_as_review()        
+        return super().form_valid(form)
+
+class ApprovedBillModelView(LoginRequiredMixin, UpdateView):
+    model = BillModel
+    form_class = ApprovedBillModelUpdateForm
+    template_name = "ledger/bills/bill_update_form.html"
+    success_url = reverse_lazy("bill_list")
+    success_message = _("Bill updated successfully.")    
+    context_object_name = "bill"
+    
+    def get_form_kwargs(self):
+        kwargs = super().get_form_kwargs()
+        dealer = get_user_type(self.request)
+        kwargs["entity_model"] = dealer.entity
+        kwargs["user_model"] = dealer.entity.admin
+        return kwargs
+    
+    def get_success_url(self):
+        return reverse_lazy("bill_detail", kwargs={"pk": self.kwargs["pk"]})
+
+    def form_valid(self, form):
+        dealer = get_user_type(self.request)
+        form.instance.entity = dealer.entity
+        if not self.object.is_approved():
+            self.object.mark_as_approved(user_model=dealer.entity.admin)
+        return super().form_valid(form)
+
+
+def bill_mark_as_approved(request,pk):
+    bill = get_object_or_404(BillModel,pk=pk)
+    if request.method == "POST":    
+        dealer = get_user_type(request) 
+        if bill.is_approved():
+            messages.error(request, _("Bill is already approved."))
+            return redirect("bill_detail",pk=bill.pk)    
+        bill.mark_as_approved(user_model=dealer.entity.admin)
+        bill.save()            
+        messages.success(request, _("Bill marked as approved successfully."))
+        return redirect("bill_detail",pk=bill.pk)
+    
+def bill_mark_as_paid(request,pk):
+    bill = get_object_or_404(BillModel,pk=pk)
+    if request.method == "POST":    
+        dealer = get_user_type(request) 
+        if bill.is_paid():
+            messages.error(request, _("Bill is already paid."))
+            return redirect("bill_detail",pk=bill.pk)
+        if bill.amount_due == bill.amount_paid:
+            bill.mark_as_paid(user_model=dealer.entity.admin)
+            bill.save()
+            bill.ledger.lock_journal_entries()
+            bill.ledger.post_journal_entries()
+
+            bill.ledger.post()
+            bill.ledger.save()
+            messages.success(request, _("Bill marked as paid successfully."))
+        else:
+            messages.error(request, _("Amount paid is not equal to amount due."))            
+        return redirect("bill_detail",pk=bill.pk)
+    
+    # def get_context_data(self, **kwargs):
+    #     dealer = get_user_type(self.request)
+    #     context = super().get_context_data(**kwargs)
+    #     context['entity_model'] = dealer.entity
+    #     context['user_model'] = dealer.entity.admin
+        
+    #     return context
+
 # class BillCreateView(LoginRequiredMixin, SuccessMessageMixin, CreateView):
 #     model = BillModel
 #     form_class = BillModelCreateForm
diff --git a/templates/ledger/bills/bill_detail.html b/templates/ledger/bills/bill_detail.html
index 1b78e795..d259c91e 100644
--- a/templates/ledger/bills/bill_detail.html
+++ b/templates/ledger/bills/bill_detail.html
@@ -4,7 +4,7 @@
 {% block title %}{{ _("View Bill") }}{% endblock title %}
 
 {% block content %}
-<div class="modal fade" id="confirmModal" tabindex="-1" aria-labelledby="confirmModalLabel" aria-hidden="true">
+<div class="modal fade" id="mark_as_approved_Modal" tabindex="-1" aria-labelledby="confirmModalLabel" aria-hidden="true">
   <div class="modal-dialog modal-sm">
     <div class="modal-content">
       <div class="modal-header bg-primary">
@@ -19,10 +19,10 @@
                       data-bs-dismiss="modal">
                   {% trans 'No' %}
               </button>     
-              {% comment %} <form id="confirmForm" method="POST" action="{% url 'bill_mark_as' bill.pk %}?mark=accept" class="d-inline">
+              <form id="confirmForm" method="POST" action="{% url 'bill_mark_as_approved' bill.pk %}" class="d-inline">
                 {% csrf_token %}
                 <button type="submit" class="btn btn-success btn-sm">{% trans "Yes" %}</button>
-              </form>                         {% endcomment %}
+              </form>
           </div>
       </div>
       </div>
@@ -44,10 +44,10 @@
                       data-bs-dismiss="modal">
                   {% trans 'No' %}
               </button>     
-              {% comment %} <form id="confirmForm" method="POST" action="{% url 'payment_mark_as_paid' bill.pk %}" class="d-inline">
+              <form id="confirmForm" method="POST" action="{% url 'bill_mark_as_paid' bill.pk %}" class="d-inline">
                 {% csrf_token %}
                 <button type="submit" class="btn btn-success btn-sm">{% trans "Yes" %}</button>
-            </form>                         {% endcomment %}
+            </form>
           </div>
       </div>
       </div>
@@ -60,14 +60,17 @@
             <div class="d-flex justify-content-between align-items-end mb-4">
               <h2 class="mb-0">{% trans 'Bill' %}</h2>
               <div class="d-flex align-items-center gap-2">                    
-                  {% if bill.bill_status == 'in_review' %}
-                  <button id="accept_bill" class="btn btn-phoenix-secondary" data-bs-toggle="modal" data-bs-target="#confirmModal"><span class="d-none d-sm-inline-block">{% trans 'Accept' %}</span></button>                                      
+                  {% if bill.is_draft %}
+                    <a href="{% url 'in_review_bill' bill.pk %}" class="btn btn-phoenix-primary"><span class="d-none d-sm-inline-block">{% trans 'Review Bill' %}</span></a>                                                            
                   {% endif %}                    
-                  {% if bill.bill_status == 'approved' %}
-                  <a href="{% url 'payment_create' bill.pk %}" class="btn btn-phoenix-primary"><span class="d-none d-sm-inline-block">{% trans 'Record Payment' %}</span></a>                                        
-                  {% endif %}                                    
-                  {% if not bill.is_paid %}
-                    <button id="mark_bill_as_paid" class="btn btn-phoenix-secondary" data-bs-toggle="modal" data-bs-target="#mark_as_paid_Modal"><span class="d-none d-sm-inline-block">{% trans 'Mark as Paid' %}</span></button>                                                      
+                  {% if bill.is_review %}
+                  <button id="mark_bill_as_approved" class="btn btn-phoenix-secondary" data-bs-toggle="modal" data-bs-target="#mark_as_approved_Modal"><span class="d-none d-sm-inline-block">{% trans 'Mark as Approved' %}</span></button>
+                  {% endif %}                                      
+                  {% if bill.is_approved %}
+                    <a href="{% url 'payment_create' bill.pk %}" class="btn btn-phoenix-primary"><span class="d-none d-sm-inline-block">{% trans 'Record Payment' %}</span></a>                                                            
+                  {% endif %}                                      
+                  {% if bill.is_approved %}
+                    <button id="mark_bill_as_paid" class="btn btn-phoenix-secondary" data-bs-toggle="modal" data-bs-target="#mark_as_paid_Modal"><span class="d-none d-sm-inline-block">{% trans 'Mark as Paid' %}</span></button>
                   {% endif %}                
               </div>
             </div>
diff --git a/templates/ledger/bills/bill_update_form.html b/templates/ledger/bills/bill_update_form.html
new file mode 100644
index 00000000..e43c596c
--- /dev/null
+++ b/templates/ledger/bills/bill_update_form.html
@@ -0,0 +1,21 @@
+{% extends 'base.html' %}
+{% load i18n %}
+{% load crispy_forms_filters %}
+{% block title %}{% trans "Bill" %}{% endblock title %}
+{% block content %}
+<div class="row my-4">
+    <h2>{% trans "Bill" %}</h2>
+    <form method="post">
+        {% csrf_token %}
+        {{ form|crispy }}        
+        <button type="submit" class="btn btn-sm btn-primary">
+        {% if bill.is_draft %}
+            {% trans "Mark As Review" %}
+        {% elif bill.is_review or bill.is_approved %}
+            {% trans "Save" %}
+        {% endif %}    
+        </button>
+        <a href="{% url 'bill_detail' pk=bill.pk %}" class="btn btn-sm btn-secondary">{% trans "Cancel" %}</a>
+    </form>
+</div>
+{% endblock %}
\ No newline at end of file
diff --git a/templates/sales/payments/payment_form.html b/templates/sales/payments/payment_form.html
index 91e1f0c9..1a319b58 100644
--- a/templates/sales/payments/payment_form.html
+++ b/templates/sales/payments/payment_form.html
@@ -12,18 +12,18 @@
 </style>
 {% endblock extra_css %}
 {% block content %}
-    <div class="row {% if invoice.invoice_status == 'paid' %}paid{% endif %}">
+    <div class="row {% if model.is_paid %}paid{% endif %}">
         <div class="row justify-content-center">
             <div class="col-md-8">
                 <div class="card">
-                    {% if invoice.invoice_status == 'paid' %}
+                    {% if model.is_paid %}
                     <div class="card-header">{{ _("Payment Already Made") }}</div>
                     {% else %}
                     <div class="card-header">{{ _("Make Payment") }}</div>
                     {% endif %}
                     <div class="card-body">
-                        {% if invoice %}
-                                <form method="post" action="{% url 'payment_create' pk=invoice.pk %}">
+                        {% if model %}
+                                <form method="post" action="{% url 'payment_create' pk=model.pk %}">
                         {% else %}
                                 <form method="post" action="{% url 'payment_create' %}">
                             {% endif %}