diff --git a/custom_ui/events/sales_order.py b/custom_ui/events/sales_order.py
index 4738e8d..1fffdb4 100644
--- a/custom_ui/events/sales_order.py
+++ b/custom_ui/events/sales_order.py
@@ -1,6 +1,16 @@
 import frappe
 from custom_ui.services import DbService, AddressService, ClientService
 
+
+def on_save(doc, method):
+    print("DEBUG: on_save hook triggered for Sales Order", doc.name)
+    if doc.advance_paid >= doc.grand_total/2:
+        if doc.project and doc.half_down_required:
+            print("DEBUG: Advance payments exceed required threshold of half down, setting project half down paid.")
+            project = frappe.get_doc("Project", doc.project)
+            project.is_half_down_paid = True
+
+
 def before_insert(doc, method):
     print("DEBUG: before_insert hook triggered for Sales Order")
     # if doc.custom_project_template == "SNW Install":
@@ -9,6 +19,7 @@ def before_insert(doc, method):
     #     if "SNW Install" in [link.project_template for link in address_doc.sales_orders]:
     #         raise frappe.ValidationError("A Sales Order with project template 'SNW Install' is already linked to this address.")
 
+
 def on_submit(doc, method):
     print("DEBUG: Info from Sales Order")
     print(doc.custom_installation_address)
@@ -29,7 +40,8 @@ def on_submit(doc, method):
                 "custom_warranty_duration_days": 90,
                 "customer": doc.customer,
                 "job_address": doc.custom_job_address,
-                "sales_order": doc.name
+                "sales_order": doc.name,
+                "requires_half_payment": doc.requires_half_payment
             })
             # attatch the job to the sales_order links
             new_job.insert()
@@ -37,6 +49,7 @@ def on_submit(doc, method):
     except Exception as e:
         print("ERROR creating Project from Sales Order:", str(e))
 
+
 def after_insert(doc, method):
     print("DEBUG: after_insert hook triggered for Sales Order:", doc.name)
     AddressService.append_link_v2(
@@ -49,6 +62,7 @@ def after_insert(doc, method):
         doc.customer, "sales_orders", {"sales_order": doc.name, "project_template": doc.custom_project_template}
     )
 
+
 def create_sales_invoice_from_sales_order(doc, method):
     pass
     # try:
diff --git a/custom_ui/install.py b/custom_ui/install.py
index f1e2041..c4a42ae 100644
--- a/custom_ui/install.py
+++ b/custom_ui/install.py
@@ -596,7 +596,7 @@ def add_custom_fields():
                 label="Is Scheduled",
                 fieldtype="Check",
                 default=0,
-                insert_after="expected_end_time"
+                insert_after="is_half_down_paid"
             ),
             dict(
                 fieldname="invoice_status",
@@ -606,6 +606,20 @@ def add_custom_fields():
                 options="Not Ready\nReady to Invoice\nInvoice Created\nInvoice Sent",
                 insert_after="is_scheduled"
             ),
+            dict(
+                fieldname="requires_half_payment",
+                label="Requires Half Payment",
+                fieldtype="Check",
+                default=0,
+                insert_after="expected_end_time"
+            ),
+            dict(
+                fieldname="is_half_down_paid",
+                label="Is Half Down Paid",
+                fieldtype="Check",
+                default=0,
+                insert_after="requires_half_payment"
+            ),
         ],
         "Project Template": [
             dict(
@@ -1150,7 +1164,7 @@ def create_task_types():
             "calculate_from": "Service Address 2",
             "trigger": "Completed",
             "triggering_doctype": "Service Address 2"
-            
+
         },
         {
             "title": "80 Day Lien Notice",
@@ -1196,10 +1210,10 @@ def create_task_types():
         })
 
         doc.insert(ignore_permissions=True)
-        
+
 
     frappe.db.commit()
-    
+
 def create_tasks():
     print("\n🔧 Creating default Tasks if they do not exist...")
     default_tasks = [
@@ -1223,7 +1237,7 @@ def create_tasks():
             "priority": "High"
         }
     ]
-    
+
     for task in default_tasks:
         if frappe.db.exists("Task", task["task_name"]):
             continue
@@ -1237,7 +1251,7 @@ def create_tasks():
             "type": task["type"]
         })
         doc.insert(ignore_permissions=True)
-    
+
 def create_project_templates():
     """Create default Project Templates if they do not exist."""
     print("\n🔧 Checking for default Project Templates...")
@@ -1251,8 +1265,6 @@ def create_project_templates():
                 }
             ]
         }
-        
-import frappe
 
 
 def create_bid_meeting_note_form_templates():