diff --git a/erpnext/controllers/selling_controller.py b/erpnext/controllers/selling_controller.py
index 8b073a4..cd1168d 100644
--- a/erpnext/controllers/selling_controller.py
+++ b/erpnext/controllers/selling_controller.py
@@ -23,7 +23,7 @@
 		super(SellingController, self).onload()
 		if self.doctype in ("Sales Order", "Delivery Note", "Sales Invoice"):
 			for item in self.get("items"):
-				item.update(get_bin_details(item.item_code, item.warehouse))
+				item.update(get_bin_details(item.item_code, item.warehouse, include_child_warehouses=True))
 
 	def validate(self):
 		super(SellingController, self).validate()
diff --git a/erpnext/public/js/controllers/buying.js b/erpnext/public/js/controllers/buying.js
index 09779d8..b0e08cc 100644
--- a/erpnext/public/js/controllers/buying.js
+++ b/erpnext/public/js/controllers/buying.js
@@ -225,7 +225,8 @@
 				args: {
 					item_code: item.item_code,
 					warehouse: item.warehouse,
-					company: doc.company
+					company: doc.company,
+					include_child_warehouses: true
 				}
 			});
 		}
diff --git a/erpnext/stock/get_item_details.py b/erpnext/stock/get_item_details.py
index 1741d65..dc00999 100644
--- a/erpnext/stock/get_item_details.py
+++ b/erpnext/stock/get_item_details.py
@@ -102,9 +102,11 @@
 	elif out.get("warehouse"):
 		if doc and doc.get("doctype") == "Purchase Order":
 			# calculate company_total_stock only for po
-			bin_details = get_bin_details(args.item_code, out.warehouse, args.company)
+			bin_details = get_bin_details(
+				args.item_code, out.warehouse, args.company, include_child_warehouses=True
+			)
 		else:
-			bin_details = get_bin_details(args.item_code, out.warehouse)
+			bin_details = get_bin_details(args.item_code, out.warehouse, include_child_warehouses=True)
 
 		out.update(bin_details)
 
@@ -1060,7 +1062,9 @@
 				res[fieldname] = pos_profile.get(fieldname)
 
 		if res.get("warehouse"):
-			res.actual_qty = get_bin_details(args.item_code, res.warehouse).get("actual_qty")
+			res.actual_qty = get_bin_details(
+				args.item_code, res.warehouse, include_child_warehouses=True
+			).get("actual_qty")
 
 	return res
 
@@ -1171,14 +1175,26 @@
 
 
 @frappe.whitelist()
-def get_bin_details(item_code, warehouse, company=None):
-	bin_details = frappe.db.get_value(
-		"Bin",
-		{"item_code": item_code, "warehouse": warehouse},
-		["projected_qty", "actual_qty", "reserved_qty"],
-		as_dict=True,
-		cache=True,
-	) or {"projected_qty": 0, "actual_qty": 0, "reserved_qty": 0}
+def get_bin_details(item_code, warehouse, company=None, include_child_warehouses=False):
+	bin_details = {"projected_qty": 0, "actual_qty": 0, "reserved_qty": 0}
+
+	if warehouse:
+		from erpnext.stock.doctype.warehouse.warehouse import get_child_warehouses
+
+		warehouses = get_child_warehouses(warehouse) if include_child_warehouses else [warehouse]
+		bin_details = frappe.db.get_value(
+			"Bin",
+			filters={"item_code": item_code, "warehouse": ["in", warehouses]},
+			fieldname=[
+				"sum(projected_qty) as projected_qty",
+				"sum(actual_qty) as actual_qty",
+				"sum(reserved_qty) as reserved_qty",
+			],
+			as_dict=True,
+			cache=True,
+		)
+		bin_details = {k: 0 if not v else v for k, v in bin_details.items()}
+
 	if company:
 		bin_details["company_total_stock"] = get_company_total_stock(item_code, company)
 	return bin_details