diff --git a/controllers/accounts_controller.py b/controllers/accounts_controller.py
index 927b249..f290d4d 100644
--- a/controllers/accounts_controller.py
+++ b/controllers/accounts_controller.py
@@ -423,3 +423,7 @@
 			self._abbr = webnotes.conn.get_value("Company", self.doc.company, "abbr")
 			
 		return self._abbr
+
+@webnotes.whitelist()
+def get_tax_rate(account_head):
+	return webnotes.conn.get_value("Account", account_head, "tax_rate")
diff --git a/controllers/buying_controller.py b/controllers/buying_controller.py
index 25d76aa..3de550c 100644
--- a/controllers/buying_controller.py
+++ b/controllers/buying_controller.py
@@ -2,7 +2,7 @@
 # License: GNU General Public License v3. See license.txt
 
 from __future__ import unicode_literals
-import webnotes
+import webnotes, json
 from webnotes import _, msgprint
 from webnotes.utils import flt, _round
 
@@ -280,3 +280,6 @@
 					(", ".join((["%s"]*len(item_codes))),), item_codes)]
 
 		return self._purchase_items
+
+	def get_bin_details(self, arg):
+		return {"projected_qty": webnotes.conn.get_value("Bin", json.loads(arg), "projected_qty") or 0 }