From 9d0fe7aa56e48cd53a41cb1d88bcb74ae741c8ec Mon Sep 17 00:00:00 2001
From: Khushi Rawat <142375893+khushi8112@users.noreply.github.com>
Date: Tue, 29 Oct 2024 17:47:48 +0530
Subject: [PATCH] fix: consider opening asset values while calculating asset
 depreciation rate

---
 erpnext/assets/doctype/asset/asset.py | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/erpnext/assets/doctype/asset/asset.py b/erpnext/assets/doctype/asset/asset.py
index 258d7a6b0611..fc16e5acc0e4 100644
--- a/erpnext/assets/doctype/asset/asset.py
+++ b/erpnext/assets/doctype/asset/asset.py
@@ -791,14 +791,19 @@ def get_depreciation_rate(self, args, on_validate=False):
 					args.get("value_after_depreciation")
 				)
 			else:
-				value = flt(args.get("expected_value_after_useful_life")) / flt(self.gross_purchase_amount)
+				value = flt(args.get("expected_value_after_useful_life")) / (
+					flt(self.gross_purchase_amount) - flt(self.opening_accumulated_depreciation)
+				)
 
 			depreciation_rate = math.pow(
 				value,
 				1.0
 				/ (
 					(
-						flt(args.get("total_number_of_depreciations"), 2)
+						(
+							flt(args.get("total_number_of_depreciations"), 2)
+							- flt(self.opening_number_of_booked_depreciations)
+						)
 						* flt(args.get("frequency_of_depreciation"))
 					)
 					/ 12