diff --git a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.json b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.json
index 03ed987745d..0f1eb4bf28a 100755
--- a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.json
+++ b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.json
@@ -5,21 +5,6 @@
  "docstatus": 0, 
  "doctype": "DocType", 
  "fields": [
-  {
-   "fieldname": "supplier_section", 
-   "fieldtype": "Section Break", 
-   "label": "", 
-   "options": "icon-user", 
-   "permlevel": 0
-  }, 
-  {
-   "fieldname": "column_break0", 
-   "fieldtype": "Column Break", 
-   "oldfieldtype": "Column Break", 
-   "permlevel": 0, 
-   "read_only": 0, 
-   "width": "50%"
-  }, 
   {
    "fieldname": "naming_series", 
    "fieldtype": "Select", 
@@ -91,6 +76,14 @@
    "print_hide": 1, 
    "read_only": 1
   }, 
+  {
+   "fieldname": "project", 
+   "fieldtype": "Link", 
+   "label": "Project", 
+   "options": "Project", 
+   "permlevel": 0, 
+   "precision": ""
+  }, 
   {
    "fieldname": "column_break1", 
    "fieldtype": "Column Break", 
diff --git a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
index 094d30cff3c..31213afe70c 100644
--- a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
+++ b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
@@ -239,6 +239,7 @@ class PurchaseInvoice(BuyingController):
 		self.update_against_document_in_jv()
 		self.update_prevdoc_status()
 		self.update_billing_status_for_zero_amount_refdoc("Purchase Order")
+		self.update_project()
 
 	def make_gl_entries(self):
 		auto_accounting_for_stock = \
@@ -373,9 +374,14 @@ class PurchaseInvoice(BuyingController):
 		self.update_prevdoc_status()
 		self.update_billing_status_for_zero_amount_refdoc("Purchase Order")
 		self.make_gl_entries_on_cancel()
-
-	def on_update(self):
-		pass
+		self.update_project()
+		
+	def update_project(self):
+		if self.project and frappe.db.exists("Project", self.project):
+			project = frappe.get_doc("Project", self.project)
+			project.flags.dont_sync_tasks = True
+			project.update_purchase_costing()
+			project.save()
 
 @frappe.whitelist()
 def get_expense_account(doctype, txt, searchfield, start, page_len, filters):
diff --git a/erpnext/projects/doctype/project/project.json b/erpnext/projects/doctype/project/project.json
index 4db087bb446..2aca991877e 100644
--- a/erpnext/projects/doctype/project/project.json
+++ b/erpnext/projects/doctype/project/project.json
@@ -303,6 +303,15 @@
    "precision": "", 
    "read_only": 1
   }, 
+  {
+   "fieldname": "total_purchase_cost", 
+   "fieldtype": "Currency", 
+   "hidden": 0, 
+   "label": "Total Purchase Cost (via Purchase Invoice)", 
+   "permlevel": 0, 
+   "precision": "", 
+   "read_only": 1
+  }, 
   {
    "fieldname": "margin", 
    "fieldtype": "Section Break", 
@@ -347,7 +356,7 @@
  "icon": "icon-puzzle-piece", 
  "idx": 1, 
  "max_attachments": 4, 
- "modified": "2015-04-23 05:51:53.642253", 
+ "modified": "2015-04-27 07:37:44.239930", 
  "modified_by": "Administrator", 
  "module": "Projects", 
  "name": "Project", 
diff --git a/erpnext/projects/doctype/project/project.py b/erpnext/projects/doctype/project/project.py
index 89cf523c1e4..eba56d521e3 100644
--- a/erpnext/projects/doctype/project/project.py
+++ b/erpnext/projects/doctype/project/project.py
@@ -89,6 +89,10 @@ class Project(Document):
 		self.gross_margin = flt(total_cost.billing_amount) - flt(total_cost.costing_amount)
 		if self.total_billing_amount:
 			self.per_gross_margin = (self.gross_margin / flt(self.total_billing_amount)) *100
+			
+	def update_purchase_costing(self):
+		self.total_purchase_cost = frappe.db.sql("""select sum(grand_total) as cost
+			from `tabPurchase Invoice` where project = %s and docstatus=1 """, self.name, as_dict=1)[0].cost
 
 @frappe.whitelist()
 def get_cost_center_name(project_name):